发明授权
- 专利标题： Barium titanate powder, semiconducting ceramic, and semiconducting ceramic electronic element
- 专利标题（中）： 钛酸钡粉末，半导体陶瓷和半导体陶瓷电子元件
-
申请号： US309985申请日： 1999-05-11
-
公开(公告)号： US6162752A公开(公告)日： 2000-12-19
- 发明人: Mitsutoshi Kawamoto , Hideaki Niimi
- 申请人： Mitsutoshi Kawamoto , Hideaki Niimi
- 申请人地址： JPX
- 专利权人： Murata Manufacturing Co., Ltd.
- 当前专利权人： Murata Manufacturing Co., Ltd.
- 当前专利权人地址： JPX
- 优先权： JPX10-128853 19980512
- 主分类号： C04B35/46
- IPC分类号： C04B35/46 ; C01G23/00 ; C04B35/468 ; H01C7/02 ; H01L23/15
摘要：
The present invention provides barium titanate powder having a withstanding voltage of 800 V/mm or more and a specific resistance at room temperature of 100 .OMEGA..multidot.cm or less, the specific resistance at room temperature undergoing substantially no time-course change. Barium titanate of the powder of the present invention assumes a cubic crystal system. The powder has a particle size of about 0.1 .mu.m or less; the ratio represented by BaCO.sub.3 /BaO as obtained through XPS is about 0.42 or less; the lattice constant is about 0.4020 nm or more; and the ratio represented by Ba/Ti is about 0.988-0.995.
公开/授权文献
- US5494790A .alpha.-3 sialyltransferase 公开/授权日：1996-02-27
信息查询
IPC分类:
