Solid-Solubility of MgO in the MgO (10.4mol%)-ZrO2 Powder Coprecipitated

Journal of Inorganic Materials

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Solid-Solubility of MgO in the MgO (10.4mol%)-ZrO₂ Powder Coprecipitated

RONG Tian-Jun; HUNAG Xiao-Xian; GUO Jing-Kun; WANG Shi-Wei

Shanghai Institute of Ceramics; Chinese Academy of Sciences; Shanghai 200050; China

Received:2001-12-28 Revised:2002-03-06 Published:2003-01-20 Online:2003-01-20

Abstract

Abstract: MgO(10.4mol%)-ZrO₂ powders coprecipitated were heated isothermally and quenched from 500 to 1450℃, then acid-leached and milled. Afterwards, the prepared powders were characterized by XRD and TEM technologies. The results show that all MgO(10.4mol%) is almost soluble in ZrO₂ after isothermal heating at 1450℃ for 2h and quenching; at 750-1350℃, the solubility of MgO is about 2.2mol%; at 500℃, it is 7.7mol%. The rest of MgO exists on the surface of the ZrO₂ crystallites.

Key words: coprecipitation, MgO-ZrO₂ powder, MgO, solid solubility

CLC Number:

TQ174

RONG Tian-Jun,HUNAG Xiao-Xian,GUO Jing-Kun,WANG Shi-Wei. Solid-Solubility of MgO in the MgO (10.4mol%)-ZrO₂ Powder Coprecipitated[J]. Journal of Inorganic Materials.

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Solid-Solubility of MgO in the MgO (10.4mol%)-ZrO₂ Powder Coprecipitated

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