Compositions – Electrically conductive or emissive compositions – Free metal containing
Patent
1998-02-17
1999-12-28
Kopec, Mark
Compositions
Electrically conductive or emissive compositions
Free metal containing
2525202, 174257, 1741262, 428403, 428407, H01B 102, H01B 106, B32B 516, H05K 109
Patent
active
060077433
ABSTRACT:
A nickel powder having at at least part of the surface thereof a layer of a composite oxide represented by the formula: A.sub.x B.sub.y O.sub.(x+2y), wherein A stands for at least one element selected from the group consisting of Ca, Sr and Ba; B stands for at least one element selected from the group consisting of Ti and Zr; and x and y represent numbers satisfying the formula: 0.5.ltoreq.y/x.ltoreq.4.5). The nickel powder may further contains at least one selected from among boron oxide, aluminum oxide and silicon oxide. The nickel powder is produced by spray pyrolyzing a solution of thermal decomposable starting compounds of nickel and additive elements and the resultant powder is suitable for use in a thick-film conductor paste having a sintering-starting temperature close to that of ceramic layers and a shrinkage behavior close to that of a ceramic without detriment to the conductivity and electric properties thereof.
REFERENCES:
patent: 4814107 (1989-03-01), Steinberg
patent: 5439502 (1995-08-01), Kodas et al.
patent: 5871840 (1999-02-01), Asada et al.
"Preparation of fine Ni particles by the spray-pyrolysis technique and their film forming properties in the thick film method", K. Nagashima et al, Journal of Materials Research, Dec., 1990, USA, vol. 5, No. 12, pp. 2828-2834.
Akimoto Yuji
Asada Eiichi
Ma Yiyi
Nagashima Kazuro
Yoshida Hiroshi
Kopec Mark
Petruncio John M
Shoei Chemical Inc.
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