扩散铝涂层对TiAl合金高温摩擦磨损性能的影响

材料热处理学报, 2010, 31(5): 113-117.

扩散铝涂层对TiAl合金高温摩擦磨损性能的影响

吴向清 ^1, , 谢发勤 ^2, , 胡宗纯 ^3, , 王立 ^4,

1.西北工业大学航空学院,陕西,西安,710072

2.西北工业大学航空学院,陕西,西安,710072

3.西北工业大学航空学院,陕西,西安,710072

4.西北工业大学航空学院,陕西,西安,710072

基金项目: 国家基础研究发展计划项目(2007CB607603) 陕西省科学技术研究发展计划项目(2006KG03)

关键词： TiAl合金 , 多弧离子镀铝 , 扩散处理 , 摩擦磨损

Effect of diffusion treatment on high temperature friction and wear resistance of aluminium-plated TiAl alloy

利用多弧离子镀技术在TiAl合金表面制备镀铝层,并进行720℃×4 h高温扩散处理.采用SEM、EDS和XRD分析了膜层的显微组织、化学成分及其相组成,测试了其显微硬度和耐磨性.结果表明:TiAl合金表面离子镀铝后,形成致密的纯铝层;经扩散处理后,膜层中纯铝相消失,形成了表面氧化层Al1O3和中间扩散层TiAl3,膜层硬度明显增加,显著提高了TiAl合金基材的抗高温摩擦磨损性能.

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扩散铝涂层对TiAl合金高温摩擦磨损性能的影响

Effect of diffusion treatment on high temperature friction and wear resistance of aluminium-plated TiAl alloy

参考文献