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复合钙钛矿型Ba(Zn1/3Ta2/3)O3陶瓷作为热障涂层陶瓷层材料的性能评价
作者:
作者单位:

1.太原理工大学 航空航天学院;2.河钢集团有限公司;3.航天科工空间工程发展有限公司;4.北京理工大学 材料学院;5.武汉纺织大学 纺织新材料与先进加工技术国家重点实验室

作者简介:

通讯作者:

中图分类号:

TG174.453

基金项目:

国家自然科学基金项目; 山西省基础研究计划青年基金项目


Performance evaluation of composite perovskite Ba(Zn1/3Ta2/3)O3 ceramic as ceramic coating material for thermal barrier coatings
Author:
Affiliation:

1.College of Aeronautics and Astronautics, Taiyuan University of Technology;2.HBIS Group Co., Ltd.;3.CASIC Space Engineer Development Co., Ltd.;4.School of Materials Science and Engineering, Beijing Institute of Technology;5.State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University

Fund Project:

The National Natural Science Foundation of China;Youth Fund project of Basic Research Program of Shanxi Province

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    摘要:

    以BaCO3、ZnO、Ta2O5为原料,采用固相反应法制备了Ba(Zn1/3Ta2/3)O3(BZT)陶瓷材料。对BZT的物相结构、高温相稳定性、热导率、热膨胀系数和喷涂工艺适应性进行表征研究,并与同类Ba(Mg1/3Ta2/3)O3(BMT)、Ba(Ni1/3Ta2/3)O3(BNT)和Ba(Sr1/3Ta2/3)O3(BST)对比,以评价BZT作为热障涂层陶瓷层材料的应用潜力。结果表明,BZT在室温至1500 oC内无相变,且经1600 oC长时处理48 h后不分解,表现出良好的高温相稳定性;在1200 oC,BZT的热导率仅为1.65 W·m-1·K-1,明显低于BMT(2.59 W·m-1·K-1),BNT(2.56 W·m-1·K-1)和BST(2.11 W·m-1·K-1),呈现出更好的高温隔热能力;同时,BZT在200~1400 oC内的平均热膨胀系数为11.3×10-6 K-1,高于BNT(10.7×10-6 K-1)和BST(8.1×10-6 K-1);由等离子喷涂制备的BZT涂层物相为单一的钙钛矿结构,所制备的YSZ/BZT双陶瓷层涂层层间结合良好。综合考虑,BZT陶瓷有望成为新型热障涂层的候选材料。

    Abstract:

    Ba(Zn1/3Ta2/3)O3 (BZT) ceramic was synthesized by a solid-state reaction method using BaCO3, ZnO, and Ta2O5 powders as the raw materials. The phase structure, high-temperature phase stability, thermal conductivity, coefficient of thermal expansion, and adaptability of spraying process of BZT were investigated and characterized, and compared with Ba(Mg1/3Ta2/3)O3 (BMT), Ba(Ni1/3Ta2/3)O3 (BNT), and Ba(Sr1/3Ta2/3)O3 (BST) to evaluate the potential application of BZT as a top coating material for thermal barrier coatings. The results indicate that no phase transition occurred during the heating from room temperature to 1500 oC, and BZT was quite stable up to 1600 °C for 48 h, without the occurrence of decomposition, showing excellent high-temperature phase stability; The thermal conductivity of BZT was only 1.65 W·m-1·K-1 at 1200 oC, which is significantly lower than that of BMT (2.59 W·m-1·K-1), BNT (2.56 W·m-1·K-1) and BST (2.11 W·m-1·K-1), showing better high-temperature heat insulation ability; The average coefficient of thermal expansion of 11.3 × 10-6 k-1 for BZT from 200 to 1400 oC was higher than that of BNT (10.7 × 10-6 k-1) and BST (8.1 × 10-6 k-1); The plasma-sprayed BZT coating had single perovskite structure, and the adhesion between the layers was compact for YSZ/BZT double-ceramic-layer coatings. Therefore, BZT ceramic might be a promising candidate material for novel thermal barrier coatings.

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曹毓鹏,刘义,李文辉,张贺,宁先进,王全胜,李文斌.复合钙钛矿型Ba(Zn1/3Ta2/3)O3陶瓷作为热障涂层陶瓷层材料的性能评价[J].稀有金属材料与工程,2023,52(2):593~600.[Cao Yupeng, Liu Yi, Li Wenhui, Zhang He, Ning Xianjin, Wang Quansheng, Li Wenbin. Performance evaluation of composite perovskite Ba(Zn1/3Ta2/3)O3 ceramic as ceramic coating material for thermal barrier coatings[J]. Rare Metal Materials and Engineering,2023,52(2):593~600.]
DOI:10.12442/j. issn.1002-185X.20211154

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  • 收稿日期:2021-12-28
  • 最后修改日期:2022-03-21
  • 录用日期:2022-03-25
  • 在线发布日期: 2023-03-09
  • 出版日期: 2023-02-28