| 采用Pt、Dy改性粘结层的铈酸镧/氧化锆双陶瓷层抗氧化行为研究 |
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| 引用本文： | 周子民,牟仁德,郭孟秋,汤智慧.采用Pt、Dy改性粘结层的铈酸镧/氧化锆双陶瓷层抗氧化行为研究[J].装备环境工程,2019,16(1):24-29. |
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| 作者姓名： | 周子民 牟仁德 郭孟秋 汤智慧 |
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| 作者单位： | 中国航发北京航空材料研究院航空材料先进腐蚀与防护重点实验室 |
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| 基金项目： | 中国航发航空材料研究院基金项目“CMC表面纳米化稀土改性硅酸盐/锆酸盐材料自修复行为研究” |
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| 摘 要： | 目的研究Pt、Dy改性粘结层的铈酸镧/氧化锆双陶瓷层的抗氧化行为。方法采用电镀+EB-PVD的方式在高温合金表面制备带有Pt、Dy掺杂NiAl粘结层的热障涂层(Thermal Barrier Coatings TBCs)。采用双陶瓷层结构设计,顶层为铈酸镧(La_2Ce_2O_7),底层为氧化锆(YSZ)。对涂层在1200℃条件下的热循环行为、微观组织以及失效机制进行了研究。结果经过500次循环后,不掺杂涂层YSZ层与热生长氧化物(TGO)处出现了大量裂纹,Pt/Dy共掺杂的涂层经过1000次循环后界面处结合良好,仅仅是在La_2Ce_2O_7陶瓷顶层中出现了少量的微裂纹。结论在粘结层中加入Pt元素,能有效抑制互扩散区难溶相的析出,延缓涂层的蜕化。
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| 关 键 词： | 热障涂层 活性元素改性 热循环 双陶瓷层 |
| 收稿时间： | 2018/10/30 0:00:00 |
| 修稿时间： | 2019/1/25 0:00:00 |
Oxidation Resistance Behavior of La2Ce2O7/YSZ Double Ceramic Layer with Pt/Dy Doped Bond Coat |
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| ZHOU Zi-min,MU Ren-de,GUO Meng-qiu and TANG Zhi-hui.Oxidation Resistance Behavior of La2Ce2O7/YSZ Double Ceramic Layer with Pt/Dy Doped Bond Coat[J].Equipment Environmental Engineering,2019,16(1):24-29. |
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| Authors: | ZHOU Zi-min MU Ren-de GUO Meng-qiu and TANG Zhi-hui |
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| Institution: | Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China,Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China,Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China and Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China |
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| Abstract: | |
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| Keywords: | thermal barrier coating active elements modification thermal cycling double ceramic layer |
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