Title:
COPPER-ZIRCONIUM-CERIUM-LANTHANUM ALLOY AND ITS HOT PROCESSING
Document Type and Number:
Japanese Patent JP2744209
Kind Code:
B2
Abstract:
PURPOSE: To prevent deterioration of material characteristics and occurrence of sticking phenomenon when used as a contact point material through which high-current flows repeatedly by adding specified amounts of cerium, lanthanum and zirconium to copper.
CONSTITUTION: The composition is comprises of, by weight, 0.02-0.50% Ce+La, 0.20-3.00% Zr and the balance Cu. To satisfy the specified contents of (Ce+La) in alloy, the specified amount of each can be added as an independent element, or the total amount can be added as misch metal. The contact point component of this alloy is manufactured by the steps, (1) hot working, (2) solution heat treatment, (3) cold working, (4) age hardening heat treatment, (5) adjusting and parts pressing. By this hot processing, minute deposits of Cu4Zr, CuxLa or the like can be homogeneously formed and 70-90 HRB hardness and 70-90% IAC conductivity can be attained. Besides, optionally the step (3) cold working can be done after the step (4) age hardening heat treatment, or can be omitted.
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Inventors:
Kim Chang-Joe
Ochun-Theob
Ochun-Theob
Application Number:
JP9112395A
Publication Date:
April 28, 1998
Filing Date:
April 17, 1995
Export Citation:
Assignee:
Korea Institute of Machinery and Metals
International Classes:
B23K35/22; C22C9/00; C22F1/00; C22F1/08; (IPC1-7): C22C9/00; C22F1/08
Domestic Patent References:
| JP2217190A | ||||
| JP4198460A | ||||
| JP571580B2 | ||||
| JP5120010B2 |
Other References:
永井武他，″Ｃｕ−Ｃｒ，Ｃｕ−ＺｒおよびＣｕ−Ｚｒ−Ｃｒ合金の焼なましに関する研究″，伸銅技術研究会誌（１９７５），第１４巻，ｐ．６０−７３
Attorney, Agent or Firm:
Tadahiko Ito (1 outside)
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