Phase, microstructure and property evolutions of reactively synthesized YSZ-ZrC composite coating based on the content regulation of the precursor

被引：0
|
作者：
Shao, Yu-Xuan [1 ]
Yang, Yong [1 ,3 ]
Liang, Hao-En [1 ]
Zhao, Ce-Ce [1 ]
Wang, Yan-Wei [1 ]
Tian, Wei [2 ]
机构：
[1] Hebei Univ Technol, Sch Mat Sci & Engn, State Key Lab Reliabil & Intelligence Elect Equipm, Tianjin Key Lab Mat Laminating Fabricat & Interfac, Tianjin 300132, Peoples R China
[2] AECC Sichuan Gas Turbine Estab, Chengdu 610500, Sichuan, Peoples R China
[3] Xiping Rd 5340, Tianjin 300401, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2023年 / 954卷
基金：
中国国家自然科学基金;
关键词：
Zirconium carbide; Reactive synthesis; Phase transformation; Plasma spraying; Mechanical property; SITU; CERAMICS;
D O I：
10.1016/j.jallcom.2023.170176
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Dense and nanostructured YSZ-ZrC composite coatings were reactively synthesized by atmospheric plasma spraying. Reactive YSZ-Al-SiC precursors with different YSZ contents were used and the evolution of the phase, microstructure and mechanical properties of the as-prepared coatings were fully revealed. Phase transformation for the YSZ component, from tetragonal phase in the start material to cubic phase in the composite coating, was validated by experimental evidences. It could be explained that the progression of in-situ reactions consumed considerable volume of zirconia and then led to higher Y/Zr ratio of Y-Zr-O melt in the droplets and then cubic phase was retained. Based on the content regulation of the reactive com-ponents, the highest yielding of ZrC phase was 35.4 wt% and the highest microhardness and fracture toughness of the composite coatings were 823 HV0.1 and 2.79 MPa/m2.(c) 2023 Elsevier B.V. All rights reserved.
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页数：9
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