Nickel powder containing a composite oxide of La and Ni and proc

Details Nickel powder containing a composite oxide of La and Ni and proc Nickel powder containing a composite oxide of La and Ni and proc

1997-09-23

1999-02-16

Le, Hoa T.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

427212, 427216, 427226, 427229, 428403, 428404, 428701, 428702, B32B 516, B05D 700

Patent

active

058718400

ABSTRACT:
A nickel powder having a composite oxide layer comprising lanthanum and nickel and, optionally an oxide of chromium, on at least a part of the surface thereof. The nickel powder is produced by a process comprising the steps of: bringing a solution comprising at least one heat-decomposable nickel compound and at least one heat-decomposable lanthanum compound and, optionally, at least one heat-decomposable chromium compound, to fine droplets; and heating the droplets at a temperature above the decomposition temperatures of these compounds to prepare a nickel powder and, at the same time, to deposit a composite oxide layer comprising lanthanum and nickel and, when present, chromium oxide, in the vicinity of the surface of the nickel powder. The nickel powder is suitable for use in a conductor paste to be co-fired with unfired ceramic green sheets for a multilayer component or the like because the sintering initiation of the powder is effectively delayed to around the sintering initiation temperature of the ceramic green sheets, thereby preventing the problems caused due to excessive sintering.

REFERENCES:
patent: 3883346 (1975-05-01), Martin
patent: 3918933 (1975-11-01), Martin
patent: 5126915 (1992-06-01), Pepin et al.
patent: 5439502 (1995-08-01), Kodas et al.
patent: 5631044 (1997-05-01), Rangaswamy et al.
Chemical Abstracts, vol. III, No. 8, Aug. 21, 1989, Abstract No. 61062, Furukawa, Sanehiro et al: "Anodes for molten-carbonate fuel cells "Abstract of JP 01 107 456 A.

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