Metal powder and process for preparing the same

Details Metal powder and process for preparing the same Metal powder and process for preparing the same

1997-09-23

2000-05-09

Speer, Timothy

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

428404, 428328, 174257, 252514, 427212, 427216, 427226, 427229, B32B 516, B05D 700

Patent

active

060601655

ABSTRACT:
A metal powder having a vitreous thin layer on at least a part of the surface thereof wherein the amount of the vitreous thin layer is preferably 0.01 to 50% by weight based on the metal powder without the vitreous thin layer. The metal powder is prepared by a process comprising the steps of: bringing a solution comprising a heat-decomposable metal compound to fine droplets; and heating the droplets to a temperature above the decomposition temperature of the metal compound, wherein a precursor of an oxide, heat-decomposable to produce a vitreous material which, together with the metal, does not form a solid solution, is added to the solution and the vitreous material is deposited, upon the heating, in the vicinity of the surface of the metal powder. The powder is useful for the preparation of a thick film paste used in a multilayer ceramic electronic component or substrate, since it has an excellent oxidation resistance during storage, in a conductor paste, and during firing of the paste.

REFERENCES:
patent: 4122232 (1978-10-01), Kuo
patent: 4415486 (1983-11-01), Boonstra
patent: 5439502 (1995-08-01), Kodas et al.
patent: 5871840 (1999-02-01), Asada

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