引用本文:王铀， 王亮， 刘赛月， 刘勇， 王超会， 邹志伟.热喷涂纳米结构La2Zr2O7(LZ)/8YSZ双陶瓷热障涂层[J].中国表面工程,2016,29(1):16~24
WANG You, WANG Liang, LIU Saiyue, LIU Yong, WANG Chaohui, ZOU Zhiwei.Nanostructured La2Zr2O7(LZ)/8YSZ Double Ceramic Layer Thermal Barrier Coatings Fabricated by Thermal Spraying[J].China Surface Engineering,2016,29(1):16~24
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热喷涂纳米结构La2Zr2O7(LZ)/8YSZ双陶瓷热障涂层
王铀， 王亮， 刘赛月， 刘勇， 王超会， 邹志伟1,2,3,4
1. 哈尔滨工业大学 材料科学与工程学院, 哈尔滨150001;2. 中国科学院上海硅酸盐研究所 特种无机涂层重点实验室， 上海 201899;3. 齐齐哈尔大学 材料科学与工程学院， 黑龙江 齐齐哈尔161006;4. 哈尔滨工程大学 材料科学与化学工程学院， 哈尔滨 150001
摘要:
为了满足发动机以及涡轮机越来越高的性能要求，双陶瓷热障涂层逐渐取代单陶瓷层的8YSZ涂层，成为可以长期使用温度高于1 200 ℃的新型陶瓷涂层。采用等离子喷涂方法制备了La2Zr2O7(LZ)/8YSZ双陶瓷热障涂层，并同时制备了微米结构和纳米结构的单层8YSZ陶瓷涂层作为对比。通过X射线衍射仪和扫描电子显微镜研究了粉体喂料和涂层的组织结构。采用对偶拉伸试验法、水淬方法和日本工业标准等研究了涂层的结合强度、隔热效果、热震行为以及高温抗氧化行为。结果表明，与单层的8YSZ陶瓷层相比，双陶瓷型nLZ/8YSZ涂层的隔热效果提高了35%，热震次数增加了一倍，热氧化失效时间延长了100多小时，具有较佳的隔热效果、抗热震性能以及抗高温氧化性能。
关键词:  热喷涂  纳米结构  LZ/8YSZ双陶瓷层  热障涂层
DOI：10.11933/j.issn.1007-9289.2016.01.003
分类号:
基金项目:
Nanostructured La2Zr2O7(LZ)/8YSZ Double Ceramic Layer Thermal Barrier Coatings Fabricated by Thermal Spraying
WANG You, WANG Liang, LIU Saiyue, LIU Yong, WANG Chaohui, ZOU Zhiwei1,2,3,4
1. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001;2. Key Laboratory of Inorganic Coating Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899;3. College of Materials Science and Engineering, Qiqihar University, Qiqihar 161006, Heilongjiang;4. College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001
Abstract:
The required performance of the engine and turbine becomes increasingly high. As the substitute for 8YSZ coatings, the double ceramic layer thermal barrier coatings are expected to work above 1 200 ℃ for a long time. In this paper, nanostructured LZ/8YSZ double ceramic layer thermal barrier coatings were prepared by plasma spraying. The feedstock, microstructure and phase compositions were studied by Xray diffraction (XRD) and scanning electron microscopy (SEM). Thermal insulation effect, thermal shock and high temperature oxidation behavior of coatings were investigated using dual tensile test,water quenching method and Japanese industry standard. Compared with 8YSZ coating, the double ceramic layer coating shows better heatshielding (increased by 35%), better antithermal shock (twice) performance and the failure time induced by thermal oxidation is elongated to more than 100 h.
Key words:  thermal spraying  nanostructure  LZ/8YSZ double ceramic layer  thermal barrier coatings
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