Title:
Sn-PLATED COPPER ALLOY BAR HAVING EXCELLENT FATIGUE CHARACTERISTICS
Document Type and Number:
WIPO Patent Application WO/2007/004581
Kind Code:
A1
Abstract:
Disclosed is an Sn-plated copper alloy bar having good fatigue characteristics wherein
deterioration of fatigue characteristics due to Sn plating is prevented. In
a copper alloy bar which is provided with an Sn or Sn alloy plating film by electroplating or
reflow processing, fatigue characteristics are improved by setting the average hydrogen
concentration at about 2 mass ppm or less.
Inventors:
HATANO TAKAAKI (JP)
Application Number:
PCT/JP2006/313134
Publication Date:
January 11, 2007
Filing Date:
June 30, 2006
Export Citation:
Assignee:
NIPPON MINING CO (JP)
HATANO TAKAAKI (JP)
HATANO TAKAAKI (JP)
International Classes:
C25D3/30; C22C9/00; C22C9/02; C22C9/04; C22C9/06; C25D5/50; C25D7/00
Foreign References:
| JPS6430124A | 1989-02-01 | |||
| JPH11140569A | 1999-05-25 | |||
| JP2004156147A | 2004-06-03 | |||
| JP2003293187A | 2003-10-15 | |||
| JPH10270836A | 1998-10-09 | |||
| JPH07166390A | 1995-06-27 |
Other References:
"Kinzoku Zairyo no Jiten", vol. 1ST ED., 25 January 1990, KABUSHIKI KAISHA ASAKURA SHOTEN, article "Hydrogen fragility", pages: 193 - 194, XP003008844
Attorney, Agent or Firm:
KURAUCHI, Motohiro et al. (13-11 Nihonbashi 3-chome, Chuo-k, Tokyo 27, JP)
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