李国辉,刘勇,国秀花,冯江,宋克兴,田保红,龙伟民

• 1:河南科技大学材料科学与工程学院
• 2:河南省有色金属材料科学与加工技术重点实验室
• 3:有色金属共性技术河南省协同创新中心
• 4:郑州机械研究所新型针焊材料与技术国家重点实验室

摘要(Abstract)：

采用放电等离子烧结法(SPS法)制备了不同TiB_2体积分数的TiB_2/Cu复合材料,测试其密度、硬度和导电率,观察其微观组织;利用JF04C型电接触材料性能测试系统探究TiB_2含量和电流对复合材料耐电弧烧蚀性能的影响。结果表明:加入TiB_2增强相后,复合材料中Cu晶粒得到细化;当TiB_2体积分数增至5%时,相比纯Cu,TiB_2/Cu复合材料硬度增加了28%、导电率降低了16%;在电接触试验中,随着TiB_2体积分数增加,触头材料总质量损耗减少;当电流为10 A时,5%TiB_2/Cu触头材料无明显材料转移,当电流大于15 A时,材料明显从阳极向阴极转移,且随电流增大转移量随之增加。

关键词(KeyWords)： TiB_2/Cu复合材料;放电等离子烧结;硬度;导电率;电弧烧蚀

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(U1502274,51605146);; 广东省金属强韧化技术与应用重点实验室(广东省材料与加工研究所)开放课题资助项目(GKL201601)

作者(Author): 李国辉,刘勇,国秀花,冯江,宋克兴,田保红,龙伟民

DOI: 10.13289/j.issn.1009-6264.2016-X233

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