Sc2O3-Y2O3-ZrO2热障涂层陶瓷材料的微观结构及力学性能*

doi:10.13385/j.cnki.vacuum.2025.05.06

真空 ›› 2025, Vol. 62 ›› Issue (5): 39-43.doi: 10.13385/j.cnki.vacuum.2025.05.06

Sc₂O₃-Y₂O₃-ZrO₂热障涂层陶瓷材料的微观结构及力学性能^*

郭毛毛¹, 谢敏¹, 王志刚¹, 牟仁德^1,2, 宋希文^1,3, 张永和¹

1.内蒙古科技大学材料科学与工程学院,内蒙古包头 014010;
2.北京航空材料研究院,北京 100095;
3.鄂尔多斯职业学院,内蒙古鄂尔多斯 017000

收稿日期:2025-02-12 发布日期:2025-09-29
通讯作者: 宋希文,教授,博导。
作者简介:郭毛毛（1982-）,女,内蒙古乌兰察布市,博士生。
基金资助:
*国家自然科学基金资助项目（52372062,52204316）、内蒙古自然科学基金项目（2024MS05021）

Microstructure and Mechanical Properties of Sc₂O₃-Y₂O₃-ZrO₂ Ceramic Materials for Thermal Barrier Coating

GUO Maomao¹, XIE Min¹, WANG Zhigang¹, MU Rende^1,2, SONG Xiwen^1,3, ZHANG Yonghe¹

1. School of Materials Science and Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China;
2. Beijing Institute of Aeronautical Materials, Beijing 100095, China;
3. Ordos Vocational College, Ordos 017000, China

Received:2025-02-12 Published:2025-09-29

摘要/Abstract

摘要： 为提高传统YSZ热障涂层的综合性能,采用多元稀土氧化物掺杂对其进行改性,利用固相法合成了不同Sc₂O₃、Y₂O₃配比（总摩尔分数为8%）的Sc₂O₃-Y₂O₃-ZrO₂（ScYSZ体系）陶瓷材料,测试分析了各陶瓷试样的微观结构和室温力学性能,并与传统8YSZ材料作了对比。结果表明：ScYSZ陶瓷材料由t′相（主相）和c相组成,t′相占比随Sc₂O₃含量的增加而增加;ScYSZ陶瓷断口平滑,掺杂Sc₂O₃并未改变YSZ材料的脆性断裂特征;Sc₂O₃摩尔分数≥7.3%时,ScYSZ材料的硬度较8YSZ提高约4%~6%,室温综合力学性能良好。ScYSZ陶瓷可以作为一种潜在的热障涂层陶瓷材料。

关键词: 固相法, ScYSZ陶瓷材料, 微观结构, 力学性能

Abstract: Multi rare-earth oxide doping is used to improve the comprehensive performance of traditional YSZ thermal barrier coatings, Sc₂O₃-Y₂O₃-ZrO₂ (ScYSZ system) ceramic materials with different Sc₂O₃ and Y₂O₃ ratios (total molar fraction of 8mol.%) were synthesized by the solid-state method. The microstructure and room temperature mechanical properties of ceramic samples were tested and analyzed, compared with the traditional 8YSZ ceramic material. The results show that the ScYSZ ceramics prepared by the solid-state method are composed of t' (the main phase) and c phases, and the proportion of t' phase increases with the Sc₂O₃ content. The fracture surface of ScYSZ ceramics is smooth, and the doping of Sc₂O₃ does not change the brittle fracture characteristics of YSZ materials. When the Sc₂O₃ molar fraction is ≥ 7.3%, the hardness of the ScYSZ system is about 4%-6% higher than that of 8YSZ, and it exhibits good comprehensive mechanical properties at room temperature. ScYSZ ceramics can be used as a potential ceramic material for thermal barrier coating.

Key words: solid-state method, ScYSZ ceramic material, microstructure, mechanical property

中图分类号: TQ174.75;TB3

郭毛毛, 谢敏, 王志刚, 牟仁德, 宋希文, 张永和. Sc₂O₃-Y₂O₃-ZrO₂热障涂层陶瓷材料的微观结构及力学性能^*[J]. 真空, 2025, 62(5): 39-43.

GUO Maomao, XIE Min, WANG Zhigang, MU Rende, SONG Xiwen, ZHANG Yonghe. Microstructure and Mechanical Properties of Sc₂O₃-Y₂O₃-ZrO₂ Ceramic Materials for Thermal Barrier Coating[J]. VACUUM, 2025, 62(5): 39-43.

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Sc₂O₃-Y₂O₃-ZrO₂热障涂层陶瓷材料的微观结构及力学性能^*

Microstructure and Mechanical Properties of Sc₂O₃-Y₂O₃-ZrO₂ Ceramic Materials for Thermal Barrier Coating

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