【摘要】 为增强Ag-SnO₂电接触材料耐电弧烧蚀性能，采用水热法制备纳米片状SnO₂粉体，并采用化学沉积工艺制备了Ag-SnO₂电接触材料。分别对SnO₂粉体和Ag-SnO₂电接触材料进行表征和性能测试，结果表明：纳米片状SnO₂厚度约为50～100 nm，宽度约为500 nm，比表面积为82.789 2 m²/g。制得Ag-SnO₂电接触材料组织分布均匀，维氏硬度、密度和电导率分别为：131.8,8.15 g/cm³,32%IACS；电弧烧蚀测试后，Ag-SnO₂电接触材料表面没有出现明显的Ag富集区与SnO₂富集区，耐电弧烧蚀性能良好。更多还原

【Abstract】 In order to improve the arc erosion resistance of Ag-SnO₂ electrical contact material, nano-flake SnO₂ powder was prepared by hydrothermal method, and then, Ag-SnO₂ electrical contact material was prepared by chemical deposition process. The characterization and performance of SnO₂ powder and Ag-SnO₂ electrical contact material were carried out respectively. The results show that the thickness and width of nano-flake SnO₂ are about 50～100 nm and 500 nm, respectively, and the specific surface area nano-flake SnO₂is 82.789 2 m²/g. The vickers hardness, density and conductivity of Ag-SnO₂ electric contact material are 131.8, 8.15 g/cm³ and 32% IACS, respectively. After arc erosion, there is no obvious Ag-rich area and SnO₂-rich area on the surface of Ag-SnO₂ electrical contact material, and the arc erosion resistance is good.更多还原