A new contact material—Ag/SnO_2-La_2O_3-Bi_2O_3

作     者：LU Jianguo, WANG Jingqin, ZHAO Jingying, WEN Ming, WANG Baozhu, and WANG XiaohongInstitute of Electrical Apparatus, Hebei University of Technology, Tianjin, 300130, China 

作者机构：Institute of Electrical Apparatus Hebei University of Technology 天津 300130 Institute of Electrical Apparatus Hebei University of Technology Tiaojin 300130 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2002年第21卷第4期

页      面：289-293页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：This project is financially supported by the Science Foundation of Hebei Province (No.502048) 

主　　题：contact material silver rare earth oxide powder metallurgy microstructure additive 

摘      要：A super-fine compound powder, Ag/SnO_2+La_2O_3+ Bi_2O_3, has been obtainedusing the chemical coprecipitation method. And a new contact material, Ag/SnO_2+La_2O_3+Bi_2O_3, wasproduced by the powder metallurgy method. Its properties are as follows: the density is 9.75-9.93g/cm^3, the resistivity is 2.31-2.55 μΩ ·cm, the hardness is 880-985 MPa. Its mi-crostructureshows that the fine oxides have a uniform distribution in the silver matrix. The results ofmake-break capacity and temperature rise testing show that the new material has better ability ofanti-arc erosion and lower temperature rise than that of commonly used Ag/CdO.