SiC_p表面处理对SiC_p/6061Al复合材料性能的影响  

Effect of Surface Treatment of Si C Particles on Properties of SiC_p/6061Al Composites

作　　者：马文丽 阎峰云[1,2] 魏富中 杨飞 MA Wenli;YAN Fengyun;WEI Fuzhong;YANG Fei(State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology,Lanzhou 730050, China;Key Laboratory of Non-Ferrous Metal Alloys and Processing, Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, China)

机构地区：[1]兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,甘肃兰州730050 [2]兰州理工大学有色金属合金及加工教育部重点实验室,甘肃兰州730050

出　　处：《热加工工艺》2019年第14期71-74,79,共5页Hot Working Technology

基　　金：国家自然科学基金项目(51564035);甘肃省重大科技专项项目(ZX1406)

摘　　要：为提高SiCp/6061Al复合材料的性能,采用不同方法对SiC颗粒进行了表面处理,并通过直热烧结法制备了不同SiC表面改性状态的SiCp/6061Al复合材料。研究表明:经过酸洗+高温氧化处理后SiCp表面生成了一层SiO2膜,SiCp的棱角发生钝化,颗粒形貌发生改变;经过碱洗+K2ZrF6处理后,SiCp表面得到粗化,并在SiCp表面析出K2ZrF6。对SiCp进行不同表面处理后,制得的SiCp/6061Al复合材料的性能都得到很大改善,而且碱洗+K2ZrF6处理这种表面处理方法对复合材料性能的改善效果最佳。In order to improve the properties of the SiCp/6061Al composites, surface treatment of SiC particles was carried out by using different methods, and the SiCp/6061Al composites under different surface modified states were prepared by direct thermal sintering method. The results show that, a layer of SiO2 film is formed on the surface of SiCp, the edges of SiCpare passivated and the morphology of the particles is changed after pickling and high temperature oxidation. The surface of SiCpis roughened and K2ZrF6 is precipitated on the surface of SiCpafter alkaline washing and K2ZrF6 treatment. The surface treatment method with alkaline washing and K2ZrF6 treatment has the best effect on the improvement of the properties of composites.

关 键 词：SIC颗粒 SICP/6061AL复合材料 表面处理 性能 

分 类 号：TB333.1[一般工业技术—材料科学与工程]