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1. 发明授权

US5279886A Alumina sintered body 失效
标题翻译：氧化铝烧结体
公开(公告)号：US5279886A
公开(公告)日：1994-01-18
申请号：US645870
申请日：1991-01-25
申请人： Takeshi Kawai , Nobuhiro Hayakawa , Harumi Aiba
发明人： Takeshi Kawai , Nobuhiro Hayakawa , Harumi Aiba
IPC分类号： C04B35/111 , C04B35/119 , H01C7/00 , H05B3/14 , H05B3/28 , C01F17/00
CPC分类号： H05B3/283 , C04B35/119 , H05B3/14 , Y10S428/901 , Y10T428/24917 , Y10T428/24926
摘要： The present invention provides an improved alumina sintered body on which a heater electrode is printed and which is sintered simultaneously with the heater electrode at temperatures lower than the optimum value 1,520.degree. C. The alumina sintered body includes high purity of alumina and 2 through 18% by weight partially stabilized zirconia, which further contains 2 through 6 mole percent solid solution of an oxide or oxides selected from Y.sub.2 O.sub.3, Sc.sub.2 O.sub.3, and lanthanum series metal oxides. The high purity of alumina may contain 0.1% by weight alkaline metals and/or alkaline earth metals and 1.0% by weight SiO.sub.2 at most. In the alumina sintered body of the invention, segregation and migration of impurities and chipping are effectively prevented and hence the durability of the sintered body is highly improved. Use of the alumina sintered body of the invention as a heater base makes the durability of a heater much longer.
摘要翻译：本发明提供了一种改进的氧化铝烧结体，其上印刷有加热器电极，并且在低于最佳值1520℃的温度下与加热器电极同时烧结。氧化铝烧结体包括高纯度的氧化铝和2至18％其还含有选自Y 2 O 3，Sc 2 O 3和镧系金属氧化物的氧化物或氧化物的2〜6摩尔％固溶体的部分稳定化的氧化锆。氧化铝的高纯度最多可以含有0.1重量％的碱金属和/或碱土金属和1.0重量％的SiO 2。在本发明的氧化铝烧结体中，有效地防止了杂质的偏析和迁移，并且因此高度提高了烧结体的耐久性。使用本发明的氧化铝烧结体作为加热器基座使得加热器的耐久性更长。

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