【作者】 朱艳彩；

【导师】 王景芹；

【作者基本信息】 河北工业大学 ， 电机与电器， 2007， 硕士

【摘要】 银氧化锡（AgSnO₂）触头材料是一种可以和银氧化镉（AgCdO）相媲美、最有希望取代AgCdO的无毒、环保型触头材料。但是,近年来在接触器应用中发现,AgSnO₂在AC3条件下工作,接触电阻较大、温升较高,其电寿命又比AgCdO低。因此研究一种添加稀土氧化物成分的AgSnO₂新型保型触头材料具有深远的现实意义。本文首先分析了AgSnO₂触头材料的国内外发展概况,研究了AgSnO₂的优缺点,提出了本课题的研究意义。其次,在研究AgSnO₂制备工艺的基础上提出了本研究的制备方法,并对试样制备过程进行了设计。再次,通过分析试样AgSnO₂-La₂O₃的基本性能提出了试样的最佳成分配比,接着对AgSnO₂-La₂O₃-Bi₂O₃试样进行物理和机械性能、显微组织及电接触性能测定和分析。最后,将试验结果与德国Degussa公司生产的AgSnO₂（12）和AgCdO（12）作对比,发现AgSnO₂-La₂O₃-Bi₂O₃与AgSnO₂（12）和AgCdO（12）的主要物理、机械性能十分相近,而且AgSnO₂-La₂O₃-Bi₂O₃具有良好的电性能。结果表明所制备的AgSnO₂-La₂O₃-Bi₂O₃具有很好的应用前景,有望成为一种可替代AgCdO（12）及AgSnO₂（12）的新型触头材料。更多还原

【Abstract】 AgCdO has been replaced by AgSnO₂ because of its no damage to the environment and the same performance as AgCdO. But it has been also found that contact resistance and temperature rise of AgSnO₂ are higher than those of AgCdO in the AC3 operation condition. It is necessary for us to develop a kind of AgSnO₂ contact materials with addition of rare earth oxide.First, the development of AgSnO₂ in home and abroad is summarized in this paper. The significant and the content of the study are presented on the basis of studying the advantage and the weakness of AgSnO₂.Then on the basis of studying the sample preparation, the method of how to make specimen is presented. We also present the process of the sample preparation. Second, we analysis the basic behavior parameters of AgSnO₂-La₂O₃ and indicate the best ratio of constituents of AgSnO₂-La₂O₃-Bi₂O₃. Then we make an analysis about the physical and mechanical properties, microstructure and electrical properties of the specimen. Last, compare the result of AgSnO₂-La₂O₃-Bi₂O₃ to AgSnO₂ （12） and AgCdO（12）.We found that the main physical and mechanical properties of the three are similar. In addition, the electrical behavior of AgSnO₂-La₂O₃-Bi₂O₃ is good. The result indicate that the new AgSnO₂-La₂O₃-Bi₂O₃ contact material has better application outlook, and it will be the substitution of AgSnO₂（12） and AgCdO（12）.更多还原