张光耀,王成磊,高原,韦文竹,陆小会

• 1:桂林电子科技大学材料科学与工程学院

摘要(Abstract)：

为减小Cr偏析,提高CuCr40合金的使用性能,制备了添加稀土Ce的CuCr40合金,对激光重熔表面处理的合金组织和导电性、耐磨耐腐蚀性进行研究。结果表明,稀土Ce抑制Cr颗粒偏析,且随Ce含量增加,细化作用更显著;激光重熔处理大幅减小了合金中Cr颗粒尺寸,随稀土含量增加,组织更加均匀,孔隙率降低;重熔层中的相组成、晶粒取向不发生变化,电导率较CuCr40合金降幅不大,仍具有良好的电学特性;重熔层的摩擦系数较低,适当提高稀土Ce含量可改善重熔层的耐磨性;在1 mol/L H2SO4溶液条件下,CuCr40-0.3Ce合金重熔层的耐腐蚀性较CuCr40合金提高了0.7倍,CuCr40-0.6Ce合金重熔层的耐腐蚀性较CuCr40合金提高了1.5倍。

关键词(KeyWords)： CuCr40合金;激光重熔;稀土;耐腐蚀性

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金青年基金(51201043);国家自然科学基金(51264007);; 广西科学研究与技术开发科技攻关计划项目(桂科攻12118020-2-2-1);; 广西信息材料重点实验室项目(1210908-214-Z);; 桂林电子科技大学-桂林电科院研究生联合培养基地专项经费资助项目(20121225-10-Z)

作者(Author): 张光耀,王成磊,高原,韦文竹,陆小会

DOI: 10.13289/j.issn.1009-6264.2014.11.028

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