纳米氧化锡银基电触头材料的研究

Study on Ag/SnO_2 Nanocrystalline Powder for Electric Contact Material

摘要:

银氧化锡触头材料是近年发展很快的1种新型无毒电触头材料，它具有热稳定性好、耐电弧侵蚀及抗熔焊性能。试验采用溶胶凝胶法制备纳米SnO2粉末，通过掺杂、化学镀包覆等工艺改善SnO2的导电性能及氧化物和银的浸润性；从而降低银氧化锡触头材料的接触电阻、改善组织的均匀性，提高机械加工性能。

Abstract:

The nanocrystalline powder of Ti4+ doped with SnO2 was prepared by the sol-gel method, and its electric conductivity and wet a-bility with silver were improved by doping and chemical platting. The results show that the uniformity, contact resistance and machinability of the Ag/SnO2 electric contact material were improved by using this technology.