A new contact material—Ag/SnO2-La2O3-Bi2O3
来源期刊：Rare Metals2002年第4期
论文作者：LU Jianguo, WANG Jingqin, ZHAO Jingying, WEN Ming, WANG Baozhu, and WANG XiaohongInstitute of Electrical Apparatus, Hebei University of Technology, Tianjin, , China
文章页码：289 - 293
摘 要：<正>A super-fine compound powder, Ag/SnO2+La2O3+Bi2O3, has been obtained using the chemical coprecipitationmethod. And a new contact material, Ag/SnO2+La2O3+Bi2O3, was produced by the powder metallurgy method. Its properties are as follows: the density is 9.75-9.93 g/cm3, the resistivity is 2.31-2.55 μΩ·cm, the hardness is 880-985 MPa. Its mi-crostructure shows that the fine oxides have a uniform distribution in the silver matrix. The results of make-break capacityand temperature rise testing show that the new material has better ability of anti-arc erosion and lower temperature rise thanthat of commonly used Ag/CdO.
摘要：<正>A super-fine compound powder, Ag/SnO2+La2O3+Bi2O3, has been obtained using the chemical coprecipitationmethod. And a new contact material, Ag/SnO2+La2O3+Bi2O3, was produced by the powder metallurgy method. Its properties are as follows: the density is 9.75-9.93 g/cm3, the resistivity is 2.31-2.55 μΩ·cm, the hardness is 880-985 MPa. Its mi-crostructure shows that the fine oxides have a uniform distribution in the silver matrix. The results of make-break capacityand temperature rise testing show that the new material has better ability of anti-arc erosion and lower temperature rise thanthat of commonly used Ag/CdO.
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