公开(公告)号：US4786486A

公开(公告)日：1988-11-22

申请号：US26185

申请日：1987-03-16

申请人： Jean-Claude Guelen ,  Jean-Francois Colombet ,  Claude Magnier ,  Jean-Philippe Browaeys ,  Alain Vesco

发明人： Jean-Claude Guelen ,  Jean-Francois Colombet ,  Claude Magnier ,  Jean-Philippe Browaeys ,  Alain Vesco

IPC分类号： C01G25/00 ,  C01G25/02 ,  C04B35/486 ,  C04B35/626

CPC分类号： C01G25/02 ,  C04B35/486 ,  C04B35/626 ,  C01P2002/54 ,  C01P2006/10 ,  C01P2006/90

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.

摘要翻译： 含有稳定量的钇或铈的亚微米氧化锆颗粒，适于陶瓷应用，是通过以下方法制备的：（i）将具有约0至3的pH的硫酸氢锆颗粒的水性悬浮液与钇盐的水溶液或 铈，（ii）在至少7的pH下中和所得混合物，（iii）从中和介质中分离锆/钇或锆/铈氢氧化物的混合物，（iv）洗涤所述氢氧化物混合物以除去硫酸盐和 氟化物离子，然后（v）煅烧所述氢氧化物混合物。