铸渗复合涂层对铝铸件表面硬度的影响  

Effects of Cast-infiltrated Compound Coating on the Surface Hardness of Aluminum Alloy Parts

作　　者：潘嘉祺[1] 孙亚琴[1] 陈麒忠[1] 姜峰[1] 

机构地区：[1]上海应用技术学院材料工程系

出　　处：《特种铸造及有色合金》2008年第12期916-918,共3页Special Casting & Nonferrous Alloys

基　　金：上海市教育委员会科技发展计划资助项目(06OZ027)

摘　　要：在铸渗过程中,采用复合涂层增强铝合金铸件表面的硬度。试验表明,复合涂料中的Cr、Al2O3和WC粉均能有效提高铸件表面硬度,碳纤维粉是一种新型材料,它与石墨具有相似的润滑性,同时能显著增强铸件的表面硬度;浇注温度是重要的工艺参数,适当提高浇注温度,有利于铸渗层的形成和表面硬度的提高。Effects of compound coating prepared by cast-infiltration on surface hardness of aluminum alloy parts were examined.The results show that Cr,Al2O3 and WC powders in the compound coating can obviously improve the surface hardness of aluminum parts.Carbon fiber powder as a new material,showing similar lubricity with graphite,can also greatly strengthen surface hardness.In addition,it is helpful for the formation of cast-infiltration layer and improvement of surface hardness by properly increasing pouring temperature.

关 键 词：铸造 铸渗 涂层 

分 类 号：TG174.445[金属学及工艺—金属表面处理] TG146.21[金属学及工艺—金属学]