TiAl金属间化合物热防护涂层研究进展  

Progress of High Temperature Protective Coatings of TiAl Intermetallic Alloy

作　　者：冯浩 郭诗琪 李宁 胡九洲 陆思萍 李涌泉 Feng Hao;Guo Shiqi;Li Ning;Hu Jiuzhou;Lu Siping;Li Yongquan(College of Mechatronic Engineering,North Minzu University,Yinchuan750021,China;School of material science&engineering,North Minzu University,Yinchuan 750021,China)

机构地区：[1]北方民族大学,材料科学与工程学院,宁夏银川750021 [2]北方民族大学机电工程学院,宁夏银川750021

出　　处：《山东化工》2021年第14期77-78,共2页Shandong Chemical Industry

基　　金：国家级大学生创新创业训练计划项目(S2020-11407-001G);宁夏大学生创新创业训练计划项目(S2020-11407-006);宁夏自然科学基金(2020AAC02025);宁夏高等学校科学技术研究项目(NGY2018-147)。

摘　　要：TiAl金属间化合物因其密度低、比强度高,高温力学性能良好被广泛的应用于航空航天等领域,但其高温抗氧化性能不足限制了合金的应用,制备热防护涂层成为解决上述问题的有效方式。文章综述了国内外TiAl金属间化合物表面热防护涂层的最新研究进展,主要包扩微弧氧化涂层、扩散涂层、物理气相沉积涂层、激光融覆涂层和搪瓷涂层。总结了不同热防护涂层的制备方法和高温防护机理,展望了TiAl合金表面热防护涂层的发展趋势和应用前景。The intermetallic alloy TiAl is considered as a most potential high-temperature structural material for aerospace applications due to its low density and excellent strength retention properties at operating temperatures.However,the poor oxidation resistance has been a major barrier to its practical applications.Thus,the method of coating is an effective route for the high-temperature applications of TiAl alloy.This work reviews the progress of high temperature protective coating of TiAl alloy,including Micro-arc oxidation coatings,diffusion coatings,physical vapour deposition coatings,Laser melt coatings and enamel coatings.Moreover,their preparation methods and high temperature protection mechanism were reviewed,and the development prospect of high temperature protective coatings of TiAl alloy is also discussed.

关 键 词：TIAL合金 涂层 高温防护 

分 类 号：TG174.44[金属学及工艺—金属表面处理]