粉末冶金制备Al_2O_3颗粒增强铜基复合材料的耐蚀性  

Corrosion Resistance of Al_2O_3/Cu Composites Prepared by Powder Metallurgy

作　　者：柳秉毅[1] 陆文龙[1] 沈智荣 杨楠[1] 缪倩倩 冒冬鑫 

机构地区：[1]南京工程学院材料工程学院

出　　处：《特种铸造及有色合金》2016年第2期204-207,共4页Special Casting & Nonferrous Alloys

基　　金：南京工程学院大学生科技创新基金项目(N20150218);南京工程学院博士基金项目(ZKJ201303)

摘　　要：采用机械合金化和粉末冶金法制备了Al_2O_3颗粒增强铜基复合材料,通过失重法对所制得的复合材料分别在不同的酸腐蚀条件下的腐蚀速率进行了测试,并采用扫描电镜对试样的腐蚀表面进行了观察。结果表明,Al_2O_3/Cu复合材料的腐蚀速率随温度和腐蚀介质浓度的增加而显著增大,充分细化Al_2O_3颗粒和适当延长球磨时间有利于改善其耐蚀性能。Al2O3 particulate reinforced copper matrix composites were prepared by mechanical alloying combined with powder metallurgy technique.The corrosion rate of the composites was tested by mass loss under different acid corrosion solution,and the sample surface morphologies were observed by SEM.The results show that the corrosion rate of the composites prepared is increased obviously with increasing in the medium temperature and the acid concentration.The corrosion resistance can be improved by fully refining Al2O3 particles and appropriately prolonging ball milling time.

关 键 词：AL2O3/CU复合材料 粉末冶金 盐酸 耐腐蚀性 

分 类 号：TB33[一般工业技术—材料科学与工程]