Mg-3Sn合金表面高导热耐腐蚀SiC_x涂层研究  

High thermal conductivity and corrosion resistant SiC_x coating on Mg-3Sn alloy

作　　者：刘霞[1] 陈云贵[1] 肖素芬[1] 唐永柏[1] 丁武成[1] 王春明[1] 何代澄[1] 唐永清[1] 

机构地区：[1]四川大学材料科学与工程学院,四川成都610064

出　　处：《功能材料》2013年第10期1480-1483,共4页Journal of Functional Materials

基　　金：四川省科技厅重点攻关资助项目(03GG009-007-4)

摘　　要：高导热耐腐蚀涂层在轻质镁合金散热器件中的应用具有重要的意义。研究了Mg-3Sn合金表面磁控溅射SiC薄膜的组织结构、导热及耐腐蚀性能。结果表明,Mg-3Sn镁合金表面磁控溅射SiCx薄膜为非晶态。相对于经盐雾实验后的Mg-3Sn合金基体,在25和100℃条件下,经SiCx涂覆的Mg-3Sn材料腐蚀后的热导率分别提高23和16W/(m.K),且具有良好的耐腐蚀性能。A coating with high thermal conductivity and corrosion resistant is considered of great significance to magnesium alloy especially when they are used as light metal heat sink devices. A SiCx film was deposited on Mg-3Sn alloy by magnetron sputtering and its structure and properties of heat conduction as well as corrosion resistance were researched. The results show that the SiCx film deposited on Mg-3Sn alloy is amorphous. In addition, compared with bare Mg-3Sn alloy substrate corroded through salt spray test, the thermal conductivities of coated Mg-3Sn alloy with SiCx film after corrosion are improved by 23 and 16W/（m ; K） at 25 and 100℃respectively. This coated Mg-3Sn alloy shows us good corrosion resistance at the same time.

关 键 词：镁合金 磁控溅射 碳化硅涂层 导热 腐蚀 

分 类 号：TB34[一般工业技术—材料科学与工程]