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公开(公告)号:US06391276B1
公开(公告)日:2002-05-21
申请号:US09525232
申请日:2000-03-14
申请人: Akihiko Suda , Naoki Takahashi , Chika Ando , Toshio Kandori , Miho Hatanaka
发明人: Akihiko Suda , Naoki Takahashi , Chika Ando , Toshio Kandori , Miho Hatanaka
IPC分类号: C01G2300
CPC分类号: B01J21/066 , B01D53/9422 , B01D2255/2042 , B01D2255/2061 , B01D2255/2063 , B01D2255/20707 , B01D2255/20715 , B01D2255/9207 , B01J21/063 , C01P2002/50
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。