Original document(5 pages) Authorized document(5 pages) 中文版
    An electric contact material is prepared from granular electrolytic silver or chemically reduced silver and granular carbonate or oxalate of purified heavy RE metal through proportional mixing in Wt. ratio of (82-95):(5-18), calcining to decomposing carbonate or oxalate, die pressing, sintering, squeezing or forging, forging again, drawing wire and obtaining the material. Its advantages are low cost and no environmental pollution.
Application Number
申请号		 01131659 Application Date
申请日		 2001.12.31
Title 名称 Preparation method of silver single or compound heavy rare earth metal oxide electric contact material
Publication Number
公开号		 1429922 Publication Date
公开日		 2003.07.16
Approval Pub. Date Granted Pub. Date 2004.12.15
International Classification 分类号 C22C1/04,C22C5/06
Applicant(s) Name
申请人		 National Defence Science & Technology Univ. PLA
Address 地址 410073
Inventor(s) Name 发明人 Du Yongguo, Zhang Weijun
Attorney & Agent 代理人 zhao hong
More information 更  多  信  息


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