银-石墨烯新型电触头材料的合成与性能研究  

Synthesis and Performances Study of New Ag-Graphene Electrical Contact Material

作　　者：王松 孙绍霞 杜静[2] 魏明霞[2] 邱红莲[3] 高勤琴 陈家林 

机构地区：[1]贵研铂业股份有限公司稀贵金属综合利用新技术国家重点实验室,昆明650106 [2]沈阳黎明航空发动机(集团)有限责任公司,沈阳110043 [3]昆明贵金属研究所云南省贵金属材料重点实验室,昆明650106

出　　处：《贵金属》2016年第B11期1-6,共6页Precious Metals

基　　金：国家自然科学基金(u1302272;51267007;51507075);云南省应用基础研究项目(2014FB164)

摘　　要：采用化学沉积和粉末冶金方法,合成了一种新型石墨烯增强银基电触头材料(Ag-G),并对其微观结构、加工性能及物理性能进行分析。结果表明,Ag-G材料组织致密、均匀,退火态抗拉强度与断后伸长率分别达到128 MPa和12.1%。DC 25V/15A阻性负载条件下,与传统石墨增强银基电触头材料(Ag-C)比较,Ag-G材料质量损耗、电弧参数及接触电阻均较Ag-C材料偏低,且电寿命为Ag-C材料的2.5倍左右。因其具有优异的加工性能与电接触性能,Ag-G材料有望成为一种替代传统Ag-C的新型电触头材料。A new type of graphene reinforced silver-based electrical contact material （Ag-G） was produced by chemical coating and powder metallurgy method, and its microstructure, processing property and physical performance were investigated. The experimental results reveal that Ag-G material has high relative density and uniform structure, and its tensile strength and elongation reach 128 MPa and 12.1%, respectively. Under the electrical contact condition of DC25 V/15 A and resistance load, compared with convenient graphite reinforced silver-based electrical contact material （Ag-C）, the weight loss, arc parameters and contact resistance of Ag-G material are lower than that of Ag-C material, and the service life of the new material is 2.5 times as long as that of the Ag-C material. Due to the superior processing property and electrical contact performance, Ag-G may be substitute for Ag-C as a new electrical contact material.

关 键 词：银基电触头材料 石墨烯 微观结构 性能 电寿命 

分 类 号：TG146.32[一般工业技术—材料科学与工程]