La₂(Zr_0.7Ce_0.3)₂O₇ thermal barrier coatings prepared by electron beam-physical vapor deposition that are resistant to high temperature attack by molten silicate

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• 作者：Xin Zhou^a ; ^{zhouxin1@whut.edu.cn} ; ^{zhouxin0426@126.com} ; Limin He^b ; Xueqiang Cao^a ; Zhenhua Xu^b ; Rende Mu^b ; Junbin Sun^a ; Jieyan Yuan^a ; Binglin Zou^c ; ^{zoubinglin@ciac.ac.cn}
• 关键词：Hot corrosion ; Oxide coatings ; Molten salt ; Ceramic
• 刊名：Corrosion Science
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：115
• 期：Complete
• 页码：143-151
• 全文大小：5923 K
• 卷排序：115

文摘

La2(Zr0.7Ce0.3)2O7 coating is highly effective in arresting silicate glass attack. The resistance is mainly attributed to the formation of a dense interaction layer. The interaction layer composes of crystalline La-Ce apatite and C-ZrO2 phases. Molten silicate penetrates only ∼32% of the coating thickness after 24 h exposure. Conventional YSZ coating is fully penetrated after only 0.5 h corrosion.