Difference evaluation on ablation behaviors of ZrC-based and ZrB2-based UHTCs coatings

被引：45
作者：
Xu, Xueting [1 ,2 ,3 ]
Pan, Xiaohui [2 ,3 ]
Niu, Yaran [2 ]
Li, Hong [1 ]
Ni, Dewei [4 ]
Huang, Shangsong [2 ]
Zhong, Xin [2 ]
Zheng, Xuebin [2 ]
Sun, Jinliang [1 ]
机构：
[1] Shanghai Univ, Res Ctr Composite Mat, Shanghai 200072, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Inorgan Coating Mat CAS, Shanghai 200050, Peoples R China
[3] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
[4] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China
来源：
CORROSION SCIENCE | 2021年 / 180卷
基金：
国家重点研发计划;
关键词：
ZrC; ZrB2; Coatings; Ablation; Oxidation; HIGH-TEMPERATURE CERAMICS; CARBON/CARBON COMPOSITES; RESISTANCE; MICROSTRUCTURE; OXIDATION; ZRO2;
D O I：
10.1016/j.corsci.2020.109181
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In the present work, five kinds of UHTCs coatings (ZrC, ZrC-SiC, ZrB2, ZrB2-SiC, ZrB2-ZrC-SiC) were fabricated. The difference of ablation behavior between ZrB2- and ZrC-based coatings was evaluated and focused on. The microstructure evolution of resulted oxide layer were characterized in detail. The results showed that the ablation resistance of ZrB2-based coating was better than that of ZrC-based coating under the same environment, exhibiting lower surface temperature, thinner thickness of both the total oxide layer and the SiC-depleted layer. The possible reasons for the phenomena were supposed based on microstructure characters and thermodynamic analysis.
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页数：11
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