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The Most Common Method of Producing Zirconia (ZrO2) Powder

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What is zirconia

Zirconium Dioxide has the chemical formula ZrO2 and is the zirconium's main oxide. Normal conditions result in a white, tasteless and odorless crystal. It's insoluble with water, hydrochloric or dilute sulfuric acid. Chemically, it is inactive. Its properties include high melting point and resistivity, as well as high refractive indices and low thermal expansion coefficients.

Plasma method

A gas is ionized significantly when heated to 3000degC and nearly completely by 5500degC. The electron flow can cause a gas to reach high temperatures when heated by resistance under an electric field. This highly dissociated and thermally conductive gas is known as plasma. Plasma cannot be produced by heating the gas. Instead, it is generally obtained through arc discharge. A plasma spray gun is the easiest plasma generator. In order to generate plasma, two electrodes are connected with a direct-current voltage. At the same time, an inert gas is passed (nitrogen, oxygen, argon or their mixtures) between the electrodes. By using a high frequency current or a short circuit, a stable DC-arc is created between the two electrodes. This causes the gas to absorb energy, forming a plasma flame at a high temperature. The zircon fine-powder sent into flames is instantly decomposed to ZrO2 or SiO2, then SiO2 is evaporated and separated from ZrO2, achieving the purpose of purifying and preparing ZrO2.


The plasma-produced high-purity ZrO2 is a unique material. Plasma ZrO2 has spherical particle size, while mZrO2 crystals have a very fine grain. The practice has shown that ZrO2 crystalline materials formed at high temperatures are very active, and this is crucial for the production of high performance ceramic materials. Also, the plasma process is continuously being improved.


The ZrO2 high-purity produced can be customized to your needs. It has a maximum ZrO2 of 99.6% and the particle sizes are above. The high-purity ZrO2 produced is white. If the ZrO2 level is low, then it will be pale yellow or yellowish brown. Stable zirconia tends to be pale yellow. All zirconia materials mentioned above are in monoclinic phases.


(aka. Technology Co. Ltd., a global supplier and manufacturer of chemical materials with more than 12 years experience in supplying super high quality nanomaterials and chemicals. ZrO2 powder manufactured by our company is of high purity with fine particles and low impurity. If you need lower, please Contact us.

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What is zirconia toughened alumina?

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What is Zirconia Toughened Alumina? The zirconia toughened alumina (ZTA), is composed of zirconia alumina. Zirconia, an oxide of zircon, is commonly added to materials due to its strength. Zirconia toughened Alumina generally has a zirconia proportion between 1/10 to 1/5. You can adjust the ratio to fit the specific product. ZTA ceramics provide the ideal balance between value and price. ZTA ceramics offer superior value than regular alumina. ZTA products also cost less than pure zirconia.

Different between ZTA and ATZ
Zirconia toughened aluminum (ZTA), and alumina hardened zirconia [ATZ] have similar raw materials. It is important to not confuse these two composites. Alumina toughened zirconia, (ATZ), has a low ratio of alumina and zirconia. Zirconia hardened alumina is (ZTA), and the reverse holds true.

ZTA properties
One of the best characteristics of zirconia-toughened alumina is their high mechanical strength. This is due to a process known as stress-induced Phase Transformation toughening. At room temperature the zirconia toughened Alumina's density is about 4.3g/cm3.
High heat resistance makes this material suitable for use in high-speed grinding machines. The zirconia hardened alumina's maximum working temperature is 1923K and the thermal expansion coefficient of this material is 8.9 x 10.6 C (--1). Additionally, the Poisson’s ratio, bending force, and elasticity of zirconia hardened alumina is 0.26130 ksi.

What advantages does Zirconia-toughened Alumina offer?
Its versatility is what makes zirconia hardening alumina so valuable. The first is that zirconia hardened alumina can resist temperatures as high as 1773 K. This makes them an ideal choice to manufacture equipment capable of enduring these extreme temperatures. Alumina zirconia hardened has a higher resistance to corrosion than normal alumina. This makes it extremely durable.

Additionally, the surface of zirconia-toughened alumina is smoother than that of ordinary alumina. You can use it for parts of equipment that are susceptible to wear due to friction. A cost-effective alternative to pure zirconia, zirconia hardened alumina can be used because it's cheaper and works better than ordinary zirconia. These materials can also be used in biocompatible applications. They have no side effects on human bodies.

ZTA uses
Valve Seal
Valve seals must be durable when choosing materials. Material durability is important. This standard is met by Zirconia-toughened Alumina and it's commonly used to seal valves.


Biocompatibility is an important characteristic of zirconia-toughened alumina. The composites can also be toughened and have high bending strengths. The zirconia toughened aluminum is an ideal material for joint replacement. Because it is biocompatible, it will not cause injury to the body. Its toughness means that it can withstand the body's weight. It's used most commonly in hip replacement.

Cutting instrument
Zirconia hardened alumina from zirconia is wear-resistant and heat-stable. It also has friction resistance. It is an ideal material for cutting tools because of these properties. These materials are less costly than those used in cutting tools like diamonds.

Grinder wheel
A grinder's most important component is the grinding wheel. Most grinding wheels are made from composite materials. Composite materials used in the manufacture of them include zirconia hardened alumina. It's strong enough to be used in this way. It's also strong and can be self-sharpening.

Immediate tooth
Due to its biocompatibility zirconia toughened is alumina, it's commonly used in dental implant manufacturing. Alumina that is zirconia-toughened by zirconia can also be corroded easily. Zirconia dental implants can be made without any harm by being moistened with alumina.

Bushing
Bushings are used to fill in the spaces between these two components. A type of bearing. A finish is often applied to zirconia toughened aluminum. It's an excellent bushing. A further reason why it's used for bushings is its high friction resistance.

ZrO2 Prices
Price is affected by many things, such as the demand and supply in the market and industry trends. Economic activity. Unexpected events.
Send us an inquiry if you want to know the current ZrO2 cost. (brad@ihpa.net)

ZrO2 supplier
Technology Co. Ltd. (), is a trustworthy ZrO2 maker, and ZrO2 provider. We have over twelve years' experience. All of our products are available for shipment worldwide.

Feel free to email us and submit an inquiry if you need high-quality ZrO2 powder. (brad@ihpa.net)

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 White Fused Alumina for Heavy-Duty Sandblasting and Polishing

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  • Natural Abrasive Type : White Fused Alumina
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