US 6,982,047 B2
Surface-treated ultrafine metal powder, method for producing the same, conductive metal paste of the same, and multilayer ceramic capacitor using said paste
Morishige Uchida, Chiba (Japan)
Assigned to Kawatetsu Mining Co., Ltd., Tokyo (Japan)
Filed on Nov. 14, 2003, as Appl. No. 10/712,092.
Claims priority of application No. 2003-055493 (JP), filed on Mar. 03, 2003.
Prior Publication US 2004/0175569 A1, Sep. 09, 2004
Int. Cl. H01B 1/02 (2006.01); B22D 39/00 (2006.01); H01G 4/008 (2006.01)
U.S. Cl. 252—513 13 Claims
OG exemplary drawing
 
1. A surface-treated ultrafine metal powder, wherein a sulfur-containing compound including at least one element selected from the group consisting of Y, Zr, and La is present on a surface of a particle of the ultrafine metal powder, and wherein said sulfur-containing compound is present in an amount such that the at least one element contained in said sulfur-containing compound is present in a total amount of 0.05% to 6% by mass and S contained in the sulfur-containing compound is present in an amount of 0.04% to 4% by mass, each relative to the mass of the ultrafine metal powder as a whole.