Titania-zirconia powder and process for producing the same
    1.
    发明授权
    Titania-zirconia powder and process for producing the same 有权
    二氧化钛 - 氧化锆粉末及其制造方法

    公开(公告)号:US06391276B1

    公开(公告)日:2002-05-21

    申请号:US09525232

    申请日:2000-03-14

    IPC分类号: C01G2300

    摘要: Disclosed are (1) a titania-zirconia powder having at least a part of the zirconia solid-dissolved in the titania crystalline phase or at least a part of the titania solid-dissolved in the zirconia crystalline phase, (2) a titania-zirconia powder containing 3 to 30 wt % of zirconia and 0.5 to 10 wt % of yttria and containing less than 20 wt %, in total, of at least a complex oxide having a composition of ZrTiO4 or (Ti,Zr) O2, monoclinic phase zirconia, and tetragonal phase zirconia, wherein the titania-zirconia powder comprises an anatase phase, and which retains a specific surface area of 34 m2/g or more after heat-treated at 900° C. for 5 hours in the air, and (3) a titania-zirconia powder wherein the titania-zirconia powder (1) or (2) having an average particle size of 1 &mgr;m or smaller is mutually dispersed with an alumina powder; and processes for producing the powders are disclosed.

    摘要翻译: 公开了(1)二氧化钛 - 氧化锆粉末,其中至少一部分氧化锆固体溶解在二氧化钛结晶相中,或至少一部分固体溶解在氧化锆晶相中,(2)二氧化钛 - 氧化锆 含有3〜30重量%的氧化锆和0.5〜10重量%的氧化钇和至少含有20重量%的至少具有ZrTiO 4或(Ti,Zr)O 2组成的复合氧化物,单斜相氧化锆 和四方相氧化锆,其中二氧化钛 - 氧化锆粉末包含锐钛矿相,并且在900℃下在空气中热处理5小时后,比表面积保持为34m 2 / g以上,(3 )二氧化钛 - 氧化锆粉末,其中平均粒度为1μm或更小的二氧化钛 - 氧化锆粉末(1)或(2)与氧化铝粉末相互分散; 公开了制造粉末的方法。