| 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. ZHOU Zi-min,MU Ren-de,GUO Meng-qiu,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. |
| 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 |
| Oxidation Resistance Behavior of La2Ce2O7/YSZ Double Ceramic Layer with Pt/Dy Doped Bond Coat |
| 投稿时间：2018-10-30 修订日期：2019-01-25 |
| DOI：10.7643/ issn.1672-9242.2019.01.005 |
| 中文关键词: 热障涂层 活性元素改性 热循环 双陶瓷层 |
| 英文关键词:thermal barrier coating active elements modification thermal cycling double ceramic layer |
| 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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| Author | Institution |
| ZHOU Zi-min | Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China |
| MU Ren-de | Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China |
| GUO Meng-qiu | Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China |
| TANG Zhi-hui | 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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| 中文摘要: |
| 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（La2Ce2O7），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La2Ce2O7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。 |
| 英文摘要: |
| Objective To study oxidation resistance behaviors of La2Ce2O7/YSZ double ceramic layer with Pt/Dy doped bond coat. Methods The method of plating + EB - PVD was used to prepare Thermal Barrier Coatings (TBCs) with Pt/Dy doped bond coat on high temperature alloy surface. The double-ceramic layer structure was designed with lanthanum cerium acid as top (La2Ce2O7), zirconia (YSZ) as bottom. Heat cycle behavior, microstructure and failure mechanism of coating at 1200 ℃ were studied. Results After 500 cycles, a large number of cracks appeared on undoped YSZ coating layer and thermally grown oxide (TGO). The interface of Pt/Dy doped coating was combined properly after 1000 cycles. Only a small amount of micro cracks appeared at La2Ce2O7 ceramic top. Conclusion Pt elements in the adhesive layer can effectively inhibit refractory phase precipi-tation of mutual diffusion area of and delay degenerateion ofthe coating. |
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