Claims
- 1. A rotary sintered ceramic article having an electroconductive surface layer within a hole formed along an axis of rotation of and within said article, said electroconductive surface layer consisting essentially of a sintered ceramic including at least one nitride-forming element selected from Group IVb of the Periodic Table and at least one element selected from the group consisting of tungsten and molybdenum, said article being produced by a method comprising applying a metallizing composition onto a surface of said hole onto which said electroconductive surface layer is to be formed, said metallizing composition comprising at least one metal salt selected from the group consisting of tungstic acid and molybdic acid, at least one metal compound selected from the group consisting of an oxide, boride, carbide and organic compound of a metal selected from Group IVb of the Periodic Table and a binder, drying said metallizing composition, heating said metallizing composition to fuse said at least one metal salt and firing said metallizing composition in a nonoxidizing atmosphere to react said sintered ceramic with said at least one metal compound to result in said electroconductive surface layer.
- 2. The article of claim 1 wherein said sintered ceramic is selected from the group consisting of sintered silicon nitride and sintered aluminum nitride.
- 3. The article of claim 1 wherein said at least one metal salt is lithium tungstate and said at least one metal compound is titanium dioxide.
Priority Claims (2)
Number |
Date |
Country |
Kind |
60-200204 |
Sep 1985 |
JPX |
|
60-211053 |
Sep 1985 |
JPX |
|
Parent Case Info
This application is a division, of application Ser. No. 905,458, filed Sept. 10, 1986 abandoned.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
4381198 |
Kondo et al. |
Apr 1983 |
|
4493789 |
Ueyama et al. |
Jan 1985 |
|
Foreign Referenced Citations (3)
Number |
Date |
Country |
3247985 |
May 1984 |
DEX |
59-217680 |
Jul 1984 |
JPX |
60-77185 |
Jan 1985 |
JPX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
905458 |
Sep 1986 |
|