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What is zirconia
Zirconium Dioxide has the chemical formula ZrO2. It is 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.
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. Plasma is the name given to this highly dissociated and thermally conductive gas. The plasma is generally obtained through arc discharge, not by heating up the gas. 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 a mixture thereof) between the electrodes. By using a high frequency current or 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 ZrO2andSiO2. SiO2is then evaporated and separated, achieving the goal of preparing and purifying ZrO2.
Plasma ZrO2 is a high-purity ZrO2 with unique properties. Plasma ZrO2 particles are spherical, and the mZrO2 Crystals are extremely fine. 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 adjusted according the requirements. It has a maximum ZrO2 of 99.6% and a particle size 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 trusted global chemical materials supplier and manufacturer with more than 12 years experience in providing super-high quality chemicals and Nanomaterials. ZrO2 powder manufactured by our company is of high purity with fine particles and low impurity. If you need lower, please Contact us.