肖楚睿,罗军明,张林伟,陆德平

• 1:南昌航空大学材料科学与工程学院
• 2:江西省科学院应用物理研究所

摘要(Abstract)：

采用等离子喷涂在镍基高温合金GH4049表面制备了CoNiCrAlY涂层,随后对涂层进行了脉冲等离子爆炸和真空预氧化处理,并对涂层进行了1050℃保温10 h和50 h的恒温静态氧化实验。结果表明:经过脉冲等离子爆炸处理后的涂层表面形貌更加平坦,脉冲等离子爆炸处理使得涂层表面的片层结构转变为致密结构,减少了氧气渗入涂层的通道,有效延缓了涂层的氧化过程,且没有改变涂层的化学成分;在1050℃空气中氧化50 h后,涂层的物相组成与未氧化处理的基本一致。

关键词(KeyWords)： 等离子喷涂;脉冲等离子爆炸;CoNiCrAlY涂层;真空预氧化;高温氧化

Abstract:

Keywords:

基金项目(Foundation): 科技部国际科技合作项目(2013DFR50900);; 国家自然科学基金(51701089)

作者(Author): 肖楚睿,罗军明,张林伟,陆德平

DOI: 10.13289/j.issn.1009-6264.2019-0382

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