Title:
BRAZING MATERIAL FOR BONDING IN ATMOSPHERE, BONDED ARTICLE, AND CURRENT COLLECTING MATERIAL
Document Type and Number:
WIPO Patent Application WO/2011/142262
Kind Code:
A1
Abstract:
Disclosed are: a brazing material for bonding in atmosphere, which has a low melting point and therefore can have a low bonding temperature in atmosphere without using any flux; a bonded article which is bonded using the brazing material and can have good air tightness and bonding strength; and a current collecting material.
The brazing material for bonding in atmosphere contains Ag and B as the essential components, wherein the content of Ag is not less than 50% by volume and less than 92% by volume, the content of B is more than 8% by volume and not more than 50% by volume, and the total amount of Ag, B and unavoidable impurities is 100%. The component B is a low melting point material which can be oxidized at about 300°C or higher to produce an oxide having a relatively low melting point (about 577°C). By containing B as the essential component, the brazing material can have a low melting point. For example, as illustrated in Fig. 4, a powder of B (reference No. 14) and molten Ag (reference No. 15) are observed in a bonding layer (13) in a bonding test specimen, which demonstrates that the brazing material for bonding in atmosphere has been molten.
Inventors:
YAMAUCHI, Yuichiro (10, Fukuura 3-chome, Kanazawa-ku, Yokohama-sh, Kanagawa 04, 〒2360004, JP)
山内 雄一郎 (〒04 神奈川県横浜市金沢区福浦３丁目１０番地 日本発條株式会社内 Kanagawa, 〒2360004, JP)
山内 雄一郎 (〒04 神奈川県横浜市金沢区福浦３丁目１０番地 日本発條株式会社内 Kanagawa, 〒2360004, JP)
Application Number:
JP2011/060251
Publication Date:
November 17, 2011
Filing Date:
April 27, 2011
Export Citation:
Assignee:
NHK SPRING CO., LTD. (10 Fukuura 3-chome, Kanazawa-ku Yokohama-sh, Kanagawa 04, 〒2360004, JP)
日本発條株式会社 (〒04 神奈川県横浜市金沢区福浦３丁目１０番地 Kanagawa, 〒2360004, JP)
YAMAUCHI, Yuichiro (10, Fukuura 3-chome, Kanazawa-ku, Yokohama-sh, Kanagawa 04, 〒2360004, JP)
日本発條株式会社 (〒04 神奈川県横浜市金沢区福浦３丁目１０番地 Kanagawa, 〒2360004, JP)
YAMAUCHI, Yuichiro (10, Fukuura 3-chome, Kanazawa-ku, Yokohama-sh, Kanagawa 04, 〒2360004, JP)
International Classes:
B23K35/30; B23K1/00; B23K1/19; C22C5/06; H01M8/02; H01M8/12; B23K101/36
Attorney, Agent or Firm:
SUENARI, Mikio (Asaco Kyobashi Building 3rd floor, 6-13 Kyobashi 1-chome, Chuo-k, Tokyo 31, 〒1040031, JP)
Claims:
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