张鲲,宁淑红,骆晓伟,董立新,陈辉,任超,何业东

• 1:西南交通大学材料科学与工程学院
• 2:西南交通大学四川省先进焊接及表面工程技术研究中心
• 3:太原维太新材科技有限公司
• 4:北京科技大学北京市腐蚀磨蚀与表面技术重点实验室

摘要(Abstract)：

采用溶胶-凝胶热压滤法(TPFSP)可制备出具有空间网络结构的Al2O3/YSZ-Al2O3涂层。为进一步提高该涂层的抗高温氧化性能,本研究对该涂层进行化学致密化处理(PCD)。高温循环氧化结果表明,该涂层的抗高温氧化性能随PCD循环处理次数增加而增强,不过经12次PCD循环处理后,提高其抗高温氧化性能的作用效果发生衰减。高温循环氧化前后形貌分析表明,涂层表面的隆起随PCD循环处理次数增加而减少,复合涂层下的TGO层增厚及TGO层附近金属基体发生内氧化的程度也随PCD循环处理次数增加而减小,PCD对形貌的影响规律与其对氧化动力学曲线的影响规律相一致。

关键词(KeyWords)： 溶胶-凝胶;Al2O3/YSZ复合涂层;高温氧化;化学致密化

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51201144);; 中国博士后科学基金(2013M542288);; 中央高校基本科研业务费(SWJTU11CX051)

作者(Author): 张鲲,宁淑红,骆晓伟,董立新,陈辉,任超,何业东

DOI: 10.13289/j.issn.1009-6264.2015.11.034

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