摘要
为了改善钛合金表面的摩擦学性能,采用电弧离子镀技术在TC4钛合金表面分别以TiAl合金靶材和Ti、Al独立靶材制备了TiAlN硬质膜层。利用X射线衍射仪、扫描电子显微镜、划痕仪和显微硬度计研究了TiAlN膜层的结构、形态、硬度和膜基结合强度。利用球-盘磨损试验机和喷射式固体粒子冲蚀试验机研究了TiAlN膜层的摩擦学性能。结果表明:TiAl合金靶材和Ti、Al组合靶制备的TiAlN膜层均显著提高了TC4合金表面的硬度、承载能力、抗滑动磨损和耐固体粒子冲刷磨损性能,但是TiAl合金靶制备的TiAlN膜层晶粒更为细致,其硬度、韧性和膜基结合强度均比Ti、Al独立靶材制备的TiAlN膜层高,因而其抗滑动磨损和耐固体粒子冲刷磨损性能更为优异。
To improve the tribological performances of titanium alloy, TiAIN films were prepared on TC4 alloy sur- face by using arc ion plating with TiAI alloy target and Ti target combined AI target, respectively. The microstruc- ture, morphology, hardness and bonding strength of the film were studied by using X-ray diffractometer, scanning electron microscope, scratch instrument and micro-hardness tester, respectively. The tribological properties of the film were evaluated using a ball on disk wear tester and solid particle erosion tester. The results show that the sur- face hardness, load supporting capacity, sliding wear and solid particle erosion resistance of the titanium alloy sub- strate are improved by TiA1N film deposited with TiAI alloy target or Ti and AI double target. The excellent proper- ties of sliding wear and solid particle erosion were obtained by depositing TiAlN coating with TiAI ahoy target be- cause the surface hardness, load supporting capacity and bonding strength of the coating are higher than that of TiAlN film deposited with Ti and AI double target.
出处
《机械科学与技术》
CSCD
北大核心
2009年第7期894-899,共6页
Mechanical Science and Technology for Aerospace Engineering
基金
国家自然科学基金项目(50671085)
国家863高技术研究发展计划项目(2007AA03Z521)资助
