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 |
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. |