LY12铝合金表面多弧离子镀TiN薄膜的结合强度及磨损性能  

Bonding Strength and Wear Behavior of Titanium Nitride Films Deposited on Aluminum Alloy Substrate by Multi-Arc Ion Plating

作　　者：庄蕾[1,2] 戴景杰[1] 李守英[1] 孙巍巍[1] 

机构地区：[1]青岛滨海学院机电工程学院,山东青岛266555 [2]太原理工大学材料科学与工程学院,山西太原030024

出　　处：《材料保护》2014年第4期60-61,67,共3页Materials Protection

基　　金：山东省高等学校科技计划项目(J10DLD53)资助

摘　　要：现有铝合金表面强化技术存在强化层薄,与基体结合力差或成本高等问题。采用多弧离子镀在硬铝合金LY12表面沉积了TiN薄膜,采用X射线衍射仪分析其结构,采用扫描电镜观察其界面形貌,采用单点划痕试验和磨损试验研究了TiN薄膜与基材的结合力、磨损性能及磨损机制。结果表明:在LY12铝合金表面制备的TiN薄膜厚度达6μm以上,膜基结合力约为41.29 N;TiN薄膜可大幅提高LY12铝合金的耐磨性能;随着载荷的增加,TiN薄膜的磨损机制从黏着磨损逐步向磨粒磨损转变。Multi-arc ion plating technique was adopted to prepare TiN film on the surface of LY12 aluminum alloy.The structure of as-prepared TiN film was analyzed by X-ray diffraction,and its interface morphology was examined with a scanning electron microscope.Furthermore,single point scratch test and friciton and wear test were conducted to examine the bonding strength of as- prepared TiN film to Al alloy substrate as well as its wear behavior and wear mechanism.Results indicated that asprepared TiN film had a thickness of over 6 μm,and the film-substrate adhesion force was about 41.29 N.Besides,TiN film was able to significantly improve the wear resistance of LY12 Al alloy,and its wear mechanism gradually varied from adhesion wear to abrasive wear with increasing load.

关 键 词：LY12铝合金 多弧离子镀 TIN薄膜 膜基结合力 磨损性能 磨损机制 

分 类 号：TG174.4[金属学及工艺—金属表面处理]