发明名称 |
Cermet composites, process for producing them and arc tube incorporating them |
摘要 |
Composite cermets having a central core of a first cermet composition and one or more surrounding layers of different cermet compositions are formed by a multi-step pressing operation, followed by sintering. A tungsten/alumina or molybdenum/alumina composite cermet is useful as an end closure for alumina arc tubes of metal halide discharge lamps.
|
申请公布号 |
US4602956(A) |
申请公布日期 |
1986.07.29 |
申请号 |
US19840682115 |
申请日期 |
1984.12.17 |
申请人 |
NORTH AMERICAN PHILIPS LIGHTING CORPORATION |
发明人 |
PARTLOW, DEBORAH P.;HO, SHIH-MING |
分类号 |
B22F7/06;C22C29/12;H01J61/36;(IPC1-7):C22C29/12 |
主分类号 |
B22F7/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|