发明名称 |
A PROCESS FOR PREPARING STABILIZED ZIRCONE HAVING A SUB-MICRON SIZE FROM ZIRCONIUM FLUOROSULPHATE, AND APPLICATIONS OF THE STABILIZED ZIRCONE THUS ABTAINED FOR CERAMIC COMPOSITIONS |
摘要 |
Submicronic zirconia particulates containing stabilizing amounts of yttrium or cerium, well adapted for ceramics applications, are produced by (i) admixing an aqueous suspension of zirconium fluosulfate particles having a pH of from about 0 to 3 with an aqueous solution of a salt of yttrium or cerium, (ii) neutralizing the resulting mixture at a pH of at least 7, (iii) separating a mixture of zirconium/yttrium or zirconium/cerium hydroxides from the medium of neutralization, (iv) washing said mixture of hydroxides to eliminate sulfate and fluoride ions therefrom, and then (v) calcining said mixture of hydroxides. |
申请公布号 |
KR920005596(B1) |
申请公布日期 |
1992.07.09 |
申请号 |
KR19870002275 |
申请日期 |
1987.03.13 |
申请人 |
SOCIETE THANN ET MULHOUSE |
发明人 |
GUELEN, JEAN-CLAUDE;BROWAEYS, JEAN-PHILIPPE;COLOMBET, JEAN-FRANCOIS;VESCO, ALAIN;MAGNIER, CLAUDE |
分类号 |
C01G25/00;C01G25/02;C04B35/486;C04B35/626 |
主分类号 |
C01G25/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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