内氧化法制备Al_2O_3/Cu复合材料的载流摩擦磨损特性  

Current-carrier Friction-wear Behavior of Al_2O_3/Cu Composites Prepared by Internal Oxidation

作　　者：郜建新[1] 徐晓峰[1] 国秀花[1] 田保红[1] 宋克兴[1] 

机构地区：[1]河南科技大学

出　　处：《特种铸造及有色合金》2006年第7期462-464,共3页Special Casting & Nonferrous Alloys

基　　金：河南省重点科技攻关资助项目(0523021500);洛阳市重点科技攻关资助项目(0209021);河南科技大学重大预研科学研究基金资助项目(2005ZD003)

摘　　要：采用内氧化法制备了Al2O3/Cu复合材料,研究了复合材料在载流条件下的摩擦磨损特性,并进行了微观组织结构分析。结果表明:采用内氧化法制备的Al2O3/Cu复合材料,在铜基体中弥散分布着纳米级的Al2O3颗粒;载流条件下,该复合材料的抗摩擦磨损性能显著优于铬青铜合金;电流较小时具有磨粒磨损和粘着磨损的共同特征,电流较大时以粘着磨损为主。在试验范围内,电流比载荷对磨损率的影响显著。Current-carrier friction-wear behavior and microstructure of Al_2O_3/Cu composites prepared by internal oxidation were investigated. The results show that nano-Al_2O_3 particle can be dispersively distributed into the Cu matrix. The wear resistance of the composites is greatly superior to that of the Cr-brass alloy in case of current carrier. The wear morphology is characterized by abrasive wear and adhesion wear with low current while it is characterized by adhesion with high current. Current has obviously affected on wear rate compared with loading.

关 键 词：内氧化 AL2O3/CU复合材料 摩擦磨损 

分 类 号：TB331[一般工业技术—材料科学与工程]