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Study on Semiconductor Material Bismuth Telluride

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What is property of Bismuth Telluride?

Bismuth telluride is a gray powder with the molecular formula Bi2Te3. Bismuth telluride is a semiconductor material, which has good electrical conductivity, but poor thermal conductivity. Although the risk of bismuth telluride is low, it can be fatal if ingested in large amounts. However, this material can allow electrons to move on its surface without energy consumption at room temperature, which will bring a leap in the operating speed of the chip, meanwhile it can greatly improve the operating speed and work efficiency of computer chips.

What are preparation methods of Bismuth Telluride?

Bismuth telluride powder materials can be processed into various commonly used devices. The more commonly used preparation methods are: zone melting method, Bridgeman method, single crystal pulling method, plasma activated sintering method and hot pressing Sintering method, the preparation of single crystal materials often use zone melting method, Bridgman method and single crystal pulling method.

1. Zone melting method: It is a method of growing single crystals by melting and crystallization of polycrystalline ingots. The rod-shaped polycrystalline ingot is melted in a narrow area, and the rest is kept solid, and then a molten area is moved along the length of the ingot, so that the rest of the entire ingot is melted and crystallized again.

2. Bridgman method: It is a commonly used crystal growth method, also known as the crucible descending method. This method is to put the material for crystal growth in a cylindrical crucible, and slowly pass through a high-frequency furnace or resistance furnace with a temperature gradient. The temperature of the furnace should be slightly higher than the melting point of the crystal material. When the crucible containing the crystal material drops to the heating center of the furnace, the material begins to melt; when the crucible continues to fall slowly, after passing the heating center of the furnace, the temperature at the bottom of the crucible begins to drop first, when the temperature drops When the melting point of the crystalline material is below, the crystalline material begins to crystallize until the crucible is completely cooled, and the crystal continues to crystallize and grow. This method is mainly suitable for common ionic compounds, such as halides of alkali metals and alkaline earth metals.

3. Czochralski method: It is the method that Chukraski invented in 1917 to grow high-quality single crystals from the melt, so it is also called Chukraski method. This method is to put crystal material in the crucible. Then heat the crucible, after the crystal material is completely melted, use the pull rod to pull the crystal material out of the melt, and under proper temperature control, the seed crystals pulled out during the cooling period are continuously rearranged, then growing crystals.

Tech Co., Ltd () is a professional bismuth telluride with over 12 years experience in chemical products research and development. If you are looking for high quality bismuth telluride, please feel free to contact us and send an inquiry.

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Iron Oxide Fe3O4 Powder Properties And Preparation

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Iron Oxide Fe3O4 is a substance inorganic with the chemical formula Fe3O4. The magnetic black crystal is called magnetic iron dioxide.

Iron Oxide Fe3O4 Powder Properties

Ferric oxide cannot be dissolved in organic solvents, such as water or alkali solutions. Natural ferroferric dioxide is not soluble when mixed with acid and is readily oxidized into iron oxide (Fe2O3) if the air is humid.
The black Fe3O4 is an iron oxide with mixed valence, melting at 1597degC. It has a density of 5,18g/cm3. Fe3O4 Powder is not soluble with water but is soluble with acid solutions. At room temperature, it appears as magnetite. It is highly conductible and sub-magnetized.

Fe3O4 exhibits anti-corrosion properties. In the case of bluing steel parts, also known as blue-burning or baking blue, an alkaline-oxidizing solution is used to produce a blue-black film of Fe3O4 on the steel surface. Used to improve corrosion resistance, aesthetics and gloss.

Iron Oxide Fe3O4 Powder Preparation

The main methods used to prepare nano-Fe3O4 are the hydrothermal method (solvothermal), the microemulsification technique, and the sol-gel technique.

1. Precipitation methods
Precipitation, a simple method with low costs, high purity, and uniformity, is a popular method to prepare nanoparticles. This method is also suitable for large-scale manufacturing. The most common precipitation methods are co-precipitation and hydrolytic precipitation. Ultrasonic precipitation is also used, as well as alkoxide hydrogenation and chelate breakdown.

2. Hydrothermal (solvothermal method)
Hydrothermal reaction (solvothermal reaction) is the general term used for chemical reactions which are carried out under high pressure and temperature in fluids, such as aqueous (organic) solvents or steam. The Fe3O4 obtained by the hydrothermal process has a particle size that is small and uniform, it does not need high-temperature pretreatment to calcinate, and it can be doped with multivalent ions.

3. Microemulsification method
The microemulsification technique is the process of creating an emulsion from two immiscible solutions under the influence of surfactants. In this method, amphiphilic molecule divides the continuous medium in tiny spaces that form a small reactor, where the reactants are able to react and form a solid. The microreactor limits the nucleation, growth of crystals, coalescence and agglomeration processes, resulting in nanoparticles which are covered with surfactant, have a certain structure and morphology, and are wrapped.

4. Sol-gel method
The method is based on the hydrolysis of metal alkoxides, followed by polymerization to produce a uniform sol containing metal oxides or hydroxides. They are then concentrated into a clear gel. The gel is dried, and then heat-treated in order to produce superfine powder.

Tech Co., Ltd. is a professional oxide powder We are a chemical product supplier with 12 years of experience. We accept payment by Credit Card, T/T (West Union), Paypal and T/T. The goods will be shipped to overseas customers via FedEx or DHL.

You can contact us for Fe3O4 powder of high quality. Contact us Send an inquiry.

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Iron oxide: a synthetic coating that is popular all over the world

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Iron oxide is a compound with the formula Fe2O3. It is one of three iron oxides. The others are the rare ferrous oxide (of FeO) and triiron oxide (of Fe3O4) which occurs naturally as the mineral magnitite. Hematite, or iron oxide, is also known as hematite. It is a main source of steelmaking iron, and it is susceptible to acidic corrosion. Iron oxide, also known as rust, is a common term. It is not always a problem because rust can have several similar characteristics. To chemists rust is a vague substance known as hydrated ferr oxide. Fe2O3 is available in different crystal forms. The main iron oxides of a and G configurations have an octahedral six-coordinate structure. What is iron oxide pigment?
Iron oxide pigments refers to four main types of pigments made from iron oxides. These are iron oxide yellow, black and brown, as well as iron oxide red. Iron oxide is the predominant pigment (which makes up approximately half of all iron oxides). The category of iron pigments also includes mica ironoxide used as anti-rust pigment, magnetic ironoxide used as a recording material and magnetic ironoxide. Iron oxide is a large inorganic and colored pigment. It is the second largest inorganic after titanium dioxide.
Synthetic iron oxide is a pigment that accounts for more than 70% of the iron oxides used. Synthetic Iron Oxide is widely used for building materials, paints, plastics, and coatings. This is because it has high synthetic purity, a uniform particle size and wide chromatogram. Electronics, tobacco, medicine, ceramics, ink, magnetic materials, papermaking, and other fields.

Applications and performance of iron oxide
1. Iron and Steel Industry: Iron oxide is used primarily as a material for the iron and steel sector.
2. Surface polishing is done with a fine powder of iron oxide, also known as "jeweler's red rouge", "red-rouge", or "rouge" for short. It is used to polish lenses and metal jewelry. Although iron oxide's cutting speed is slower than that of some polishing agents used today (such as cerium dioxide), it is still employed in the optical industry and jewelry because it produces excellent finishes. Rouge will slightly contaminate gold when polishing it. This can have an effect on the final product's appearance. Rouge comes in powders and pastes as well as polishing cloths and solid sticks. Many other polishing products are referred to by the term "Rouge" even though they don't contain iron oxide. Jewelers use ultrasonic cleansing to remove rouge residue from jewelry. For leather shaving, "scraping" compounds are used to achieve sharp edges for knives, hair straightening razers, or other edge tools.
Different colors of iron oxide (a = red and b = Yellow) in different hydrates.
3. Iron oxide is used as pigment. The names of the pigments are "Iron Oxide Brown 6", “Iron Oxide Brown 7,” and "Iron Oxide Brown 101". Pigment Brown 6 and Pigment Red 101 have been approved as cosmetics by the US Food and Drug Administration. For dental composites, titanium dioxide and iron oxide are combined as a pigment.
The world's cheapest energy-storage device---iron-air batteries
Iron-air batteries that can be recharged at home are able to produce 100 hours of electricity for a cost comparable to traditional power plants, and less than 1/100 the price of lithium-ion. Energy transition is dependent on finding ways to consolidate renewable energies. Long-term, cheap and safe batteries that store energy can be the key to the energy transition. This is because they are able to solve the variable nature of solar and wind energy.
The average storage cost of large lithium ion batteries was set at US$132-245/MWh by a French financial advisor in their industry standard annual report. Iron air batteries, at one tenth that price, will be the cheapest energy storage at a distance.
The personnel responsible for developing this battery stated: "This battery will be able to provide reliable, safe, and 100% renewable power throughout the entire year."
(aka. Technology Co. Ltd., a trusted global chemical supplier & manufacturer has been providing high-quality Nanomaterials and chemicals for over 12 Years. Our company is currently developing a number of materials. The iron oxide produced by us is of high purity with fine particles and low impurities. To get the most recent price on Iron oxide, please send us an e-mail or click on any of the products you are interested in to send us a message.



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The applications of aerogel in battery field will be more diversified

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Lithium-ion Batteries are the most popular in the battery industry. But they have inherent safety issues due to the structure and nature of their materials.
Due to the high total current and voltage in the power sector, thousands of single lithium-ion battery packs are often used together. The safety of batteries is a growing concern. The safety problem hasn't been fully resolved as far as battery material technology goes. Heat insulation, flame retardant, and fire protection are all effective methods to reduce harm caused by lithium-ion battery thermal runaway.

Aerogels currently have the lowest known thermal conductivity among solid materials. Aerogel insulation materials, heat-insulation panels, and heat-insulation papers have a thermal insulation performance that is up to five times greater than other products. These products also offer excellent fire retardancy and flame resistance. With the growth of the aerogel sector, applications of aerogel to batteries are becoming more widespread. They offer soft impact resistance and sound insulation as well as noise reduction.

Aerogel has a very low thermal conductivity
Researchers have tested the thermal insulation effect of heat insulation boards between single cells. The thermal runaway experiment was used to test the aerogel separator. A 6Ah battery module was placed in a module of 20mm with four insulation materials of 200mm and added a board of 1cm thickness between two monomers. The thermal runaway effect on the thermal protection in the single cell compartment.

The experimental results showed that when monomer A becomes thermally out-of-control, monomer in the blank groups without thermal protection quickly becomes heated and thermally in-control. In contrast, experimental monomer with an aerogel between the monomers reached only 110°C. This temperature successfully blocked the spread of thermal runaway in a 6Ah cell from a distance 20mm.

Due to its excellent properties of heat insulation and flame retardance, aerogel is able to further reduce the safe distance between monomers. In order to maximize the power of battery packs and reduce space, aerogel manufacturers have developed a range of ultra-thin aerogel sheets, insulation paper, and other products that meet the high energy density and safety requirements of the industry.

Aerogel will be used more widely in battery applications as my country develops its aerogel industry. This will include the latest military thermal batteries, but also more civilian battery areas, including new energy power, thermal insulation, and flame retardant protection of lithium-ion and accumulator batteries in electronic equipment.

(aka. Technology Co. Ltd., a trusted global chemical supplier & manufacturer has been providing high-quality Nanomaterials and chemicals for over 12 Years. The Nanoparticle Silica Airgel produced by us has an extremely high porosity. Contact us if you have any questions.

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Characteristics and applications of spherical alumina

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Spherical alumina: characteristics
1. High filling: The large particle size and particle distribution allows for high density filling of rubber and plastics. It also produces compounds with good fluidity and low viscosity.
2. High thermal conduction: The high filling density of the compound allows it to have higher thermal conduction and heat dissipation rates compared with crystalline silicon.
3. Spherical shape reduces wear of machines such as kneading machines.
Application of spherical aluminum
1. Use as a ceramic material
Micropowder with spherical particles has good sintering and compression molding characteristics. This is very beneficial in the production of ceramic products.
2. It is used as a material for grinding and polishing
Avoiding scratches can be achieved by using spherical aluminum oxide as a polishing material.
3. It is used in the petrochemical industries
In the petrochemical industries, the requirements for pore size distribution as well as pore structure are increasing. To control the pore distribution and size of the catalyst carrier particles, it is possible to adjust the particle size configuration in the spherical form.
4. Catalyst
The use of spherical aluminum as a catalyst directly can reduce abrasion while increasing the lifespan of the catalyst. This will lower the production costs.
5. For surface protective coating
Surface protection for machinery, tools, chemical pipelines and equipment is achieved by spraying spherical powder particles. These can significantly improve surface hardness, corrosion and wear resistance.
6. Luminescent materials
Alumina spheres have a high density which reduces the scattering and loss of light.
7. Electronics industry
The excellent properties of spherical aluminum in terms of electrical, thermal, and mechanical properties make it a popular choice for electronic semiconductor packaging.

The excellent properties of spherical aluminum in terms of electrical, thermal, and mechanical properties make it a popular choice for electronic semiconductor packaging.

Tech Co., Ltd. () is an experienced spherical-alumina manufacturer with over 12 year experience in chemical product development and research. If you need high quality spherical aluminum please contact our team and send us an enquiry.

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Properties and Uses of Boron Carbide

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What is Boron Carbide?

Boron carburide (also known as black diamand) is an organic material with the molecular formula B4C. It's a gray-black fine powder. It is among the three hardest substances known (the two others being diamond and cubic boron-nitride). It's used in bulletproof vests, tank armor and other industrial applications. Its Mohs hardness rating is 9.3.

Boron carbide absorbs a large amount of neutrons and does not form radioisotopes. It is therefore an ideal neutron absorption material in nuclear power plants. Neutron absorbers are used to control nuclear fission. Boron carbide, which is used in nuclear reactors, is mostly made into a controlled rod shape. But sometimes it's made into powder due to the increased surface area.


Due to its low density, it is a good material for lightweight armor and ceramic reinforcement phases. It is widely used in ceramic reinforcing phase, lightweight armor, neutron absorbers and other applications. As boron carbide can be easily manufactured and is less expensive than diamond and cubic Boron Nitride, it is used more often. It can be used to replace diamond in some areas and is often used for grinding, drilling, and grinding.

Boron carbide Powder Uses

(1) The field is national defense. Bullet-proofing has been done with boron carbide ceramics since the 1960s. Comparing it to other materials, its characteristics are easy portability and high toughness. It is a key component of the lightweight armor used on armed helicopters as well as the bulletproof aircraft armor. The British used this material as a raw materials to manufacture armor that can protect against armor piercing projectiles.


(2) In terms if chemical raw materials. To increase the wear resistance of alloys and their strength, boron-carbide is used. This can be done by boronizing the surface of the alloy to produce a thin layer iron boride.


(3) Wear-resistant field. Boron carbide ceramics are visible in a number of industrial nozzles. These include desander nozzles and nozzles designed for high-pressure water guns. They are often chosen by factories for their durability under extreme conditions, and cost-effectiveness. . It can also be used to avoid pollution due to abrasive waste during grinding. As a diamond abrasive substitute, boron carbide can be used to reduce the cost of processing various metals as well as jade glass.


(4) Nuclear energy. Because of its excellent capacity to absorb neutrons, boron carbide is often used as a neutron absorption rod, safety rods and in other components, which are designed to reduce the rate of nuclear fission, and ensure human safety.


(aka. Technology Co. Ltd., a trusted global chemical materials supplier & manufacture with more than 12 years experience in providing high-quality nanomaterials and chemicals. The B4C powder that we produce is of high purity with a fine particle size. If you require lower, please Contact us.

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TiC has high hardness, high melting point, wear resistance and electrical conductivity

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Titanium carbide Overview Titanium carbide has the chemical formula TiC and a molecular weight of 59.89. Gray metallic lattice solid with a face-centered cubic structure. Melting point: 3140+-90, boiling point: 4820, relative densities 4.93. Hardness is greater that 9. Water insoluble, but soluble with nitric and aqua regia. It is stable with air below 800 and is eroded by the air above 2000. It can react with O2 pure at 1150C.
Titanium carbide ceramics is a typical transition metal carbide. TiC's unique properties are due to its bonding, which is composed of ionic covalent and metallic bonding mixed together in the crystal structure. TiC has many unique properties due to its crystal structure. These include high hardness, high melt point, wear resistance, and electrical conductivity.
Preparation of Titanium Carbide
Method: The mixtures of titanium and carbon are obtained by hydrogen-reduction TiO2 in high temperature or by TiO2 powder mixed with carbon powder pressed into blocks. They are then heated in the electric oven to 2300-2700 and carbonized under H2 atmosphere or CO. The hard, crystalline powder of TiC is produced by the reaction between carbon black and titanium dioxide at a temperature higher than 1800degC. Cobalt and nickel are used to compact it for heat-resistant parts and cutting tools. Cutting tools are more brittle, and it's lighter. Sintered carbide is less likely to produce grooves when combined with the tungsten carbide in tool materials.
Property of titanium carbide
Theoretically TiC contains 20.05 percent carbon. It is light metallic gray. It is chemically resistant and inert towards hydrochloric, sulfuric and nitric acids. TiC dissolves readily in oxidizing chemical solutions, like aqua regia, nitric and hydrofluoric acids, or hydrofluoric and nitric acids. It dissolves also in an alkaline oxidation melt. Nitrogen is formed above -1500degC in a nitrogenous air. TiC can be attacked by chlorine and tends to oxidize when heated in the air.
The elastic modulus for TiC is 309 706 MPa. The material sintered from 2600 to 3000 has a fracture modulus between 499.8 and 843.2MPa at room temperatures. The thermal modulus is 107.78 - 116.96mpa for 982 and 54.4-63.92mpa for 2200. The melting point of TiC is 3160 degrees C. At room temperature, the resistivity is 180 to 250 It is a good conductor for high temperatures. The thermal coefficient of expansion between 593degC and room temperature is 4.12x10-6/degF. Thermal conductivity is 0.04 CAL/cm S/degC.
Titan carbide ceramics
1. Multiphase materials : titanium carbide is a super-hard material. It can be produced with TiN and Al2O3 to make various multiphase ceramics. They have excellent chemical stability. This makes them the best choice for wear-resistant components, cutting tools. Titanium carbide ceramics can be used for cutting high-speed wire-regulating wheels, carbon steel and other materials due to their excellent oxidation resistance. They also do not cause crescent wear when they are in contact with steel. The use of multiphase ceramics containing titanium carbide has been widespread.
2. Coating material: Titanium carbide as a surface coat is an extremely wear-resistant material. By combining some carbides with diamond surfaces by chemical or physical means, these metals and alloys will react at high temperatures to produce stable metal carbides. These carbides are not only able to bond with diamonds, but they can also infiltrate matrix metals, enhancing the adhesion between matrix metal and diamond. Tool life can increase by up to three times with titanium carbide film.
3. The research on nuclear fusion reactors has shown that titanium carbide and composite (TiN+TiC) coating materials, after undergoing chemical heat treatments, create a tritium-resistant layer of permeability on the surface titanium carbide. This layer can withstand hydrogen ion exposure and withstand thermal cycles and large temperature gradients.
4. The ceramics made of titanium carbide are good for optical purposes.
Titanium carbide Supplier
(aka. Technology Co. Ltd., a reputable global chemical supplier and manufacturer with more than 12 years of experience, is a leader in high-quality nanomaterials and chemicals. Currently, we have developed a number of materials. The Titanium carbide The powder we produce is of high purity and low impurity. To get the latest information, click here. Titanium carbide prices Click on the desired product to send an enquiry.

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A quick overview of molybdenum carbide

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The properties of Molybdenum Carbide The chemical formula of Molybdenum carburide MoC is the molecular weight and it is 107.95.
Its melting point is 2692degC. It also has good thermal and mechanical properties, as well as good corrosion resistance. Its melting temperature is 2692degC. Water and lye are insoluble. Nitric acid, hydrofluoric and sulfuric acids are slightly soluble.
The catalytic types of molybdenum carbide:
1. Hydrogenation Reaction
2. Hydrodesulfurization HDS, and hydrodenitrogenation HDN reactions;
3. Isomerization is a reaction.
4. Hydrocarbon conversion and Synthesis reaction
5. Applications in ammonia syntheses
Preparation of molybdenum carbide
Preparation principle: Mo+C- MoC
The two elements may be directly combined, or they can be prepared through the reaction of molybdenum oxide and molybdate under a reducing atmospheric at around 800degC.

Applications of Molybdenum Carbide
In terms of the global structure of consumption, molybdenum does indeed work with iron. In western developed countries, 80% of molybdenum demand comes from steel. Stainless steel absorbs about 30% of it, low alloy steel takes another 30%, while drill bits, cutting tools, and cast-steel account for the remaining 10%. The remaining 20% is consumed by molybdenum chemicals and molybdenum lubricants, as well as petroleum refining. The United States consumed 75% molybdenum in 1998.
Molybdenum-based materials are used increasingly in electronic, metal processing, and aerospace industries.
1. Molybdenum Alloy
TZM is the alloy with the highest strength and most comprehensive properties. TZM alloy, used by the United States in turbine disks of engines, accounts for about 15% of all molybdenum. The production of molybdenum in my country, including TZM molybdenum alloy, is not less than 22 grades. Early 1990s, my country's production of molybdenum alloys and molybdenum materials was around 200 tons.
TZM & TZC Molybdenum Alloys offer superior mechanical properties to pure molybdenum. They are widely used for high-tech moulds, structural parts, and other high-tech applications. In the early 20th century, we were able to make hot-perforated plugs for seamless steel pipes. The sintered molybdenum sinter plugs manufactured using powder smelting reduce the raw material consumption (50%) and increase the service life 1.5-2 times.
The seamless tube of molybdenum alloy rhenium (containing 50% Re), has excellent high-performance and can be used near its melting point. It can also be used to make the brackets, rings, grids, and other parts for the thermowell as well as the cathode.
It is easier to process molybdenum than tungsten. Therefore, plates, strips, foils, etc. Tubes. rods. wires. profiles. etc. Used in electronic tubes, electric light source parts (support material), metal processing tool (die-casting dies, extrusion dies forging dies perforated plugs liquid metal filter screens), and turbine discs. Used in many components.
2. Alloying components of steel
The use of molybdenum as an alloying component, along with nickel and chromium can help reduce embrittlement, which is often seen in alloy steels when heated. United States took the lead by using molybdenum in high-speed alloys instead of tungsten to solve the shortages of tungsten. Molybdenum, according to calculations has twice the "capacity", of tungsten. The steel that contains 18% tungsten is replaced with the steel that contains 9% molybdenum. Molybdenum's role in stainless steel is primarily to improve corrosion resistance and weldability. You can see that molybdenum has a major role to play in the steel sector.
Other Uses
Molybdenum exhibits a very low vapour pressure when working at the pressure and temperature of the vacuum oven. Molybdenum is the material that causes the least contamination to the materials in the vacuum oven.
Due to its high strength, molybdenum makes the ideal electrode in glass manufacturing. It is also the best material for processing and equipment when rapid heating occurs. Because molybdenum is chemically incompatible with most glass components, it will not produce harmful color changes due to the small amount of molybdenum that may be dissolved in a glass melting tank. As a heating electrode in a glass melt furnace, it can last up to 3 or 5 years.

(aka. Technology Co. Ltd. has over 12 years experience as a supplier of high-quality chemical materials and nanomaterials. The Molybdenum carburide Please note that the products produced by our company are of high purity and have low impurity. Please. Contact us if necessary.

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Application of Magnesium Oxide in Ceramics

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What is magnesium Oxide?

Magnesium dioxide, is an inorganic compound with a chemical composition of MgO. The solid is white at room temperature. Magnesium oxide is found naturally in periclase. It is used as a raw material in magnesium smelting.

Magnesium dioxide has excellent fire resistance and insulation qualities. Magnesium oxide can be crystallized after burning at high temperatures above 1000degC. Burnt magnesia is formed when the temperature reaches 1500-2000degC. Magnesium-oxide ceramics are high-temperature resistant, have excellent conductivity and mechanical strength. They can be used to make microwave media, thick film integrated semiconductors, or glass-ceramics.


Concentrated application of magnesium oxide to ceramics

1. It is possible to manufacture a wide range of complex products using silicon nitride. These include cutting tools, bearings and nozzles. They can also be produced with high-temperature wear-resistant and corrosion-resistant products.


2. Preparation of magnesia core

It is important to note that the use temperature for the magnesia core cannot be lower than 1600°C. This means it will not react with cast metals under high-temperature circumstances. Castings with silicon-based cores have a smooth surface, which compensates for the many pores and holes that are present in the internal cavity. It is easy to strip, with simple equipment and a pollution-free, non-polluting stripping process. Thermal cracking is common; the core has a high degree of precision; it will not deform or break during the handling, installation of the furnace and modelling.


3. Prepare high-toughness materials by using a composite stabilizer of yttrium and magnesium oxides or rare-earth metal oxides. These stabilizers produce zirconia ceramics that have excellent mechanical properties, and are resistant to ageing at high temperatures. The ceramic material has many applications, including high-temperature engineered parts and advanced materials.


(aka. Technology Co. Ltd., a trusted global chemical materials supplier and manufacturer with more than 12 years experience in providing super-high quality chemicals and Nanomaterials. Our magnesia oxide powder is of high purity with a fine particle size. If you need lower, please call us.

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Application of α Alumina and γ Alumina in the Catalysis of Petroleum Refining

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What is Alumina?

Alumina Al2O3 is an inorganic compound with the chemical Formula Al2O3. It is an inorganic compound with the chemical formula Al2O3. It has a melting and boiling point of 2960degC. It is an ionic crystalline material that can be heated to high temperatures.
Diaspore and bauxite (Al2O3*3H2O), which are both mineral aluminates, are used in the production of industrial alumina. Al2O3 of high purity is usually prepared chemically. Al2O3 comes in many different forms. There are over 10 different types of crystals. There are 3 main crystal types: a, b and g Al2O3. At high temperatures above 1300, the structure is different and so are its properties.

Use of alumina

It is transformer oil in the industrial sector. Alumina comes in two main types: the a-type, and the g-type. The filterate is cooled and then aluminium hydroxide crystalline salts are added. This process is known as "Bayer."

1. The precipitate, which is also called aluminium oxide, is highly flammable.

2. Alpha-alumina does not dissolve in water or acid. 9-4, density 3, Catalysts, catalyst carriers. Pure alumina, a white amorphous crystalline powder, is used to produce a variety of refractory bricks that have an internal surface area in the range of 100 square meters per gram. They are also known for their high activity and high adsorption. Industrial products can be colourless, or slightly pinkish, cylindrical particles that are extracted from bauxite.
3. It is widely used as an adsorbent for the petroleum refining industry and petrochemical industries. It is the most common method of producing alumina in industry. When heated to 1,200 degrees, the lattice will convert completely into alumina.

4. G-type alumina cannot be dissolved in water. It is also known as activated alumina by industry. The melting and boiling point of this alumina are both 2980 degrees. KJ Bayer, an Austrian scientist, invented this technique in 1888. It is used as the primary raw material to produce metal aluminum. After usage, it can also be recycled and reused by heating to 175°C for 6-8h. Presently, more than 90% (of the world's total production) of alumina is produced using the Bayer Process. It is used in laboratories as a material to create artificial sapphires, rubies, and strong desiccants.

(aka. Technology Co. Ltd., a trusted global chemical supplier & manufacturer has over 12 years experience in providing super-high-quality chemicals & Nanomaterials. The Al2O3 powder The products produced by our company are of high purity and have a low content of impurities. Lower please Contact us if necessary.

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