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热喷涂技术:2022,14(3):13-22
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高熵稀土铝酸盐双陶瓷涂层的制备及热防护性能研究
(1.郑州大学, 材料科学与工程学院, 中原关键金属实验室;2.北京理工大学, 材料科学与工程学院, 冲击环境材料技术重点实验室;3.北京理工大学, 重庆创新中心)
Preparation and Thermal Protection Propertiesof High-entropy Rare Earth Aluminate Double Ceramic Coatings
(1.School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001;2. Beijing Institute of Technology, School of Materials Science and Engineering, Key Laboratory of Impact Environmental Materials Technology, Beijing 100081;3. Chongqing Innovation Center, Beijing Institute of Technology)
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中文摘要: 随着航空航天技术的发展, 热防护涂层服役温度逐渐提高, 亟需寻找新一代涂层材料。 本研究通过固相烧 结法制备高熵稀土铝酸盐 (Y0.2Yb0.2Lu0.2Eu0.2Er0.2)3Al5O12(HE-RE3Al5O12) 陶瓷粉体, 采用大气等离子喷涂技术在高 温合金基体上实现 HE-RE3Al5O12/YSZ 和 HE-RE3Al5O12/Al2O3 双陶瓷涂层有效沉积。 分析了双陶瓷涂层的相结构 及微观组织演变规律, 并开展了其在高温氧乙炔焰流热冲击循环作用下的热防护性能研究。 结果表明, 氧乙炔火 焰加热涂层表面温度至 1400 ℃, 并在目标温度下停留 200 s 时, HE-RE3Al5O12/YSZ 和 HE-RE3Al5O12/Al2O3 涂层 样品(HE-RE3Al5O12 涂层厚度为 200 μm) 能够分别实现有效温降约为 665 ℃和 545 ℃。 HE-RE3Al5O12/YSZ 双陶 瓷涂层在 1400 ℃ -200 s 热循环下的寿命为 20 次左右, 且该涂层的抗热震性能明显优于 HE-RE3Al5O12/Al2O3 涂层。 基于高熵涂层的热防护行为演变特征, 推测在高温焰流循环作用过程中涂层内部所产生的热失配应力是引起双陶 瓷涂层失效的主要原因。 本研究工作基于新型双陶瓷涂层结构设计, 有效扩展了高熵稀土铝酸盐涂层材料在高温 热防护领域中的应用前景。
Abstract:With the development of aerospace technology, the service temperature of thermal protective coatings has gradually increased, and it is urgent to find a new generation of coating materials. In this paper, Y2O3, Yb2O3, Lu2O3, Eu2O3, Er2O3, Al2O3 were used as raw materials to prepare high-entropy rare earth aluminate (Y0.2Yb0. 2Lu0.2Eu0.2Er0.2)3Al5O12 (HE-RE3Al5O12) ceramic powder by solid phase sintering method, and HE-RE3Al5O12/ YSZ and HE-RE3Al5O12/Al2O3 double layer ceramic coatings were prepared by atmospheric plasma spraying. The phase composition and microstructure of the double layer ceramic coating were analyzed, and the thermalprotection performance under the thermal shock cycle experiment at a surface temperature of 1400℃ heated by an oxyacetylene flame was studied. The results show that when the surface temperature of the coating is 1400 ℃ , and held at the target temperature for 200 s the samples of HE-RE3Al5O12/YSZ and HE-RE3Al5O12/Al2O3 coatings can achieve effective temperature drops of about 665℃ and 545℃ , respectively. The HE-RE3Al5O12/YSZ double layer ceramic coating presented a life of about 20 times under the thermal cycle of 1400 ℃ -200 s, and the thermal shock resistance of the HE-RE3Al5O12/YSZ double layer ceramic coating was significantly better than that of the HE-RE3Al5O12/Al2O3 coating. Based on the evolution characteristics of thermal protection behavior of highentropy coatings, it is speculated that the thermal mismatch stress generated inside the coating during the hightemperature flame flow cycle was the main cause of the invalidation of the double ceramic coating. The double layer ceramic coatings designed in this paper expand the application of high entropy rare earth aluminate HERE3Al5O12, and exhibited good application prospects for thermal insulation.
文章编号:     中图分类号:TG174.4    文献标志码:
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Author NameAffiliation
Zhang Yaning School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001
2. Beijing Institute of Technology, School of Materials Science and Engineering, Key Laboratory of Impact Environmental Materials Technology, Beijing 100081
3. Chongqing Innovation Center, Beijing Institute of Technology 
Wang Kailun School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001
2. Beijing Institute of Technology, School of Materials Science and Engineering, Key Laboratory of Impact Environmental Materials Technology, Beijing 100081
3. Chongqing Innovation Center, Beijing Institute of Technology 
Zhu Jinpeng School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001
2. Beijing Institute of Technology, School of Materials Science and Engineering, Key Laboratory of Impact Environmental Materials Technology, Beijing 100081
3. Chongqing Innovation Center, Beijing Institute of Technology 
Wang Hailong School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001
2. Beijing Institute of Technology, School of Materials Science and Engineering, Key Laboratory of Impact Environmental Materials Technology, Beijing 100081
3. Chongqing Innovation Center, Beijing Institute of Technology 
Ma Zhuang School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001
2. Beijing Institute of Technology, School of Materials Science and Engineering, Key Laboratory of Impact Environmental Materials Technology, Beijing 100081
3. Chongqing Innovation Center, Beijing Institute of Technology 
Wei Sihao School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001
2. Beijing Institute of Technology, School of Materials Science and Engineering, Key Laboratory of Impact Environmental Materials Technology, Beijing 100081
3. Chongqing Innovation Center, Beijing Institute of Technology 
, Yang Kaijun School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001
2. Beijing Institute of Technology, School of Materials Science and Engineering, Key Laboratory of Impact Environmental Materials Technology, Beijing 100081
3. Chongqing Innovation Center, Beijing Institute of Technology 
He Jilin School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001
2. Beijing Institute of Technology, School of Materials Science and Engineering, Key Laboratory of Impact Environmental Materials Technology, Beijing 100081
3. Chongqing Innovation Center, Beijing Institute of Technology 
引用文本:
张亚宁,汪凯伦,朱锦鹏,王海龙,马壮,委思豪,杨凯军,何季麟.高熵稀土铝酸盐双陶瓷涂层的制备及热防护性能研究[J].热喷涂技术,2022,14(3):13-22.

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