Coating processes – Heat decomposition of applied coating or base material – Coating decomposed to form metal
Patent
1992-06-19
1994-03-08
Owens, Terry J.
Coating processes
Heat decomposition of applied coating or base material
Coating decomposed to form metal
4273763, 106 112, B05D 302
Patent
active
052925528
ABSTRACT:
An aluminum nitride sintered body that has been fired/formed to have a prescribed sintered configuration, is used as a substrate. A metal paste of tungsten is prepared and applied to the substrate. The metal paste of tungsten contains oxide components of at least 1 percent by weight of the paste and not more than 40 percent by weight of the paste. The oxide components include SiO.sub.2 of at least 1 percent by weight of the oxide components and not more than 40 percent by weight of the oxide components. The oxide components include CaO and Al.sub.2 O.sub.3 in a weight ratio of at least 0.5 and not more than 2 of CaO to Al.sub.2 O.sub.3. The aluminum nitride sintered body coated with the metal paste is heated/fired in a non-oxidizing atmosphere at a temperature of at least 1400.degree. C. and not more than 2000.degree. C.
REFERENCES:
patent: 4800137 (1989-01-01), Okuno et al.
patent: 4835039 (1989-05-01), Barringer et al.
patent: 4883780 (1989-11-01), Kasori et al.
patent: 4886709 (1989-12-01), Sasame et al.
patent: 4965659 (1990-10-01), Sasame et al.
Sasame Akira
Yamakawa Akira
Fasse W. G.
Kane, Jr. D. H.
Owens Terry J.
Sumitomo Electric Industries Ltd.
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