Title:
NICKEL-RHENIUM ALLOY POWDER AND CONDUCTOR PASTE CONTAINING THE NICKEL-RHENIUM ALLOY POWDER
Document Type and Number:
WIPO Patent Application WO/2008/041541
Kind Code:
A1
Abstract:
This invention provides a nickel-rhenium alloy powder suitable particularly for the formation of an internal electrode layer for a stacked ceramic electronic component. The nickel-rhenium alloy powder comprises nickel as a main component and further comprises 0.1 to 10% by weight of rhenium and having an average particle diameter of 0.05 to 1.0 µm. The nickel-rhenium alloy powder has a surface oxide film comprising an oxide of nickel and an oxide of rhenium. The content of oxygen in the nickel-rhenium alloy powder in the surface oxide film is 0.1 to 3.0% by weight based on the total amount of the powder. The powder, optionally together with other additive(s), is homogeneously mixed and dispersed in an organic vehicle to prepare a conductor paste. The use of the nickel-rhenium alloy powder particularly for the formation of an internal electrode for a stacked ceramic electronic component is advantageous in that, by virtue of the surface oxide film, the sintering shrink behavior of the electrode can be rendered similar to the sintering shrink behavior of the ceramic layer. Further, spheroidizing of the electrode attributable to oversintering does not take place. Therefore, an internal electrode, which is thinner and denser and has excellent continuity, can be provided.
Inventors:
AKIMOTO, Yuji (Tosu Plant 5-3, Aza-wakazakura, Fujinoki-machi, Tosu-sh, Saga 48, 8410048, JP)
秋本 裕二 (〒48 佐賀県鳥栖市藤木町字若桜５－３ 昭栄化学工業株式会社鳥栖事業所内 Saga, 8410048, JP)
NAGASHIMA, Kazuro (Tosu Plant 5-3, Aza-wakazakura, Fujinoki-machi, Tosu-sh, Saga 48, 8410048, JP)
永島 和郎 (〒48 佐賀県鳥栖市藤木町字若桜５－３ 昭栄化学工業株式会社鳥栖事業所内 Saga, 8410048, JP)
秋本 裕二 (〒48 佐賀県鳥栖市藤木町字若桜５－３ 昭栄化学工業株式会社鳥栖事業所内 Saga, 8410048, JP)
NAGASHIMA, Kazuro (Tosu Plant 5-3, Aza-wakazakura, Fujinoki-machi, Tosu-sh, Saga 48, 8410048, JP)
永島 和郎 (〒48 佐賀県鳥栖市藤木町字若桜５－３ 昭栄化学工業株式会社鳥栖事業所内 Saga, 8410048, JP)
Application Number:
JP2007/068520
Publication Date:
April 10, 2008
Filing Date:
September 25, 2007
Export Citation:
Assignee:
SHOEI CHEMICAL INC. (1-1 Nishishinjuku 2-chome, Shinjuku-ku Tokyo, 43, 1630443, JP)
昭栄化学工業株式会社 (〒43 東京都新宿区西新宿二丁目１番１号 Tokyo, 1630443, JP)
AKIMOTO, Yuji (Tosu Plant 5-3, Aza-wakazakura, Fujinoki-machi, Tosu-sh, Saga 48, 8410048, JP)
秋本 裕二 (〒48 佐賀県鳥栖市藤木町字若桜５－３ 昭栄化学工業株式会社鳥栖事業所内 Saga, 8410048, JP)
NAGASHIMA, Kazuro (Tosu Plant 5-3, Aza-wakazakura, Fujinoki-machi, Tosu-sh, Saga 48, 8410048, JP)
昭栄化学工業株式会社 (〒43 東京都新宿区西新宿二丁目１番１号 Tokyo, 1630443, JP)
AKIMOTO, Yuji (Tosu Plant 5-3, Aza-wakazakura, Fujinoki-machi, Tosu-sh, Saga 48, 8410048, JP)
秋本 裕二 (〒48 佐賀県鳥栖市藤木町字若桜５－３ 昭栄化学工業株式会社鳥栖事業所内 Saga, 8410048, JP)
NAGASHIMA, Kazuro (Tosu Plant 5-3, Aza-wakazakura, Fujinoki-machi, Tosu-sh, Saga 48, 8410048, JP)
International Classes:
C22C19/03; B22F1/00; B22F1/02; H01B1/22; H01G4/12; H01G4/30
Attorney, Agent or Firm:
SAKAI, Masami et al. (Akasaka Office Heights, 13-5 Akasaka 4-chome,Minato-k, Tokyo 52, 1070052, JP)
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