李任伟,宫文彪

• 1:东北电力大学工程训练教学中心
• 2:长春工业大学先进材料重点实验室

摘要(Abstract)：

采用两种热障涂层材料分别是纳米8%Y_2O3-ZrO_2(以下简称为YSZ)和在8%Y_2O_3-ZrO_2中掺杂25%的纳米CeO_2(以下简称为CSZ),应用大气等离子喷涂技术在GH30高温合金钢表面上制备了YSZ和CSZ隔热涂层,测试了两种涂层在950℃时耐Na_2SO4熔盐腐蚀的能力,使用SEM、XRD和EDS技术对涂层的失效机理进行了分析,结果表明:腐蚀60h后,YSZ涂层大面积脱落并且出现了t-ZrO_2→m-ZrO_2转变,而CSZ涂层基本无脱落,保持t-ZrO_2。CSZ阻止腐蚀介质进去涂层的能力强于YSZ,抗高温熔盐腐蚀性能优于YSZ。

关键词(KeyWords)： 热障涂层;等离子喷涂;熔盐腐蚀

Abstract:

Keywords:

基金项目(Foundation): 吉林省自然科学基金重点项目(20080507);; 总装备部武器预研基金(51461020201JW1301)

作者(Author): 李任伟,宫文彪

DOI: 10.13289/j.issn.1009-6264.2016.03.025

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