| A new contact material—Ag／SnO2—La2O3—Bi2O3 |
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| 引用本文： | LUJianguo WANGJingqin 等.A new contact material—Ag／SnO2—La2O3—Bi2O3[J].稀有金属(英文版),2002,21(4):289-293. |
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| 作者姓名： | LUJianguo WANGJingqin |
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| 作者单位： | InstituteofElectricalApparatus,HebeiUniversityofTechnology,Tianjin,300130,China |
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| 基金项目： | This project is financially supported by the Science Foundation of Hebei Province (No.502048) |
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| 摘 要： | A super-fine compound powder,Ag/SnO2 La2O3 Bi2O3,has been obtained using the chemical coprecipitation method.And a new contact material,Ag/SnO2 La2O3 Bi2O3,was produced by the powder metallurgy method.Its properties are as follows:the density is 9.75-9.93g/cm^3,the resistivity is 2.31-2.55μΩ.cm.the hardness is 880-985 MPa.Its microstructure shows that the fine oxides have a uniform distribution in the silver matrix.The results of make-break capacity and temperature rise testing show that the new material has better ability of anti-arc erosion and lower temperature rise than that of commonly used Ag/CdO.
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| 关 键 词： | 粉末冶金 银 稀土氧化物 接触材料 |
A new contact material——Ag/SnO2-La2O3-Bi2O3 |
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| LU Jianguo,WANG Jingqin,ZHAO Jingying,WEN Ming,WANG Baozhu,WANG Xiaohong.A new contact material——Ag/SnO2-La2O3-Bi2O3[J].Rare Metals,2002,21(4):289-293. |
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| Authors: | LU Jianguo WANG Jingqin ZHAO Jingying WEN Ming WANG Baozhu WANG Xiaohong |
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| Abstract: | A super-fine compound powder, Ag/SnO2+La2O3+ Bi2O3, has been obtained using the chemical coprecipitation method. 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 cm, the hardness is 880-985 MPa. Its microstructure shows that the fine oxides have a uniform distribution in the silver matrix. The results of make-break capacity and temperature rise testing show that the new material has better ability of anti-arc erosion and lower temperature rise than that of commonly used Ag/CdO. |
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| Keywords: | contact material silver rare earth oxide powder metallurgy microstructure additive |
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