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zirconia ceramics
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Zirconia ceramics are white, yellow or gray when containing impurities, and generally contain HfO2, which is difficult to separate. There are three crystal states of pure ZrO2 at atmospheric pressure.
The production of zirconia ceramics requires the preparation of high-purity, well dispersed, ultrafine particles and narrow particle size distribution powders.
There are many methods for the preparation of zirconia ultrafine powders. The purification of zirconia mainly includes chlorination and thermal decomposition, alkali metal oxidation decomposition, lime melting, plasma arc, precipitation, colloid, hydrolysis, spray pyrolysis, etc.
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