Enhanced oxidation resistance of HfB2‐SiC‐ZrSi2 coating at 1700°C through low‐loss film‐forming treatment

Author:

Zhang Menglin12,Ji Xiang1,Zhang Youkui3,Chen Yuexing1,Wang Peipei4,Kiryukhantsev‐Korneev Philipp V.5,Levashov Evgeny A.5,Shi Ji6,Ren Xuanru13ORCID,Kang Xueqin3,Zhang Baojing3,Zhang Ping3,Feng Peizhong3

Affiliation:

1. Henan Key Laboratory of High Performance Carbon Fiber Reinforced Composites Institute of Carbon Matrix Composites Henan Academy of Sciences Zhengzhou P. R. China

2. State Key Laboratory of Solidification Processing Shaanxi Key Laboratory of Fiber Reinforced Light‐Weight Composites Northwestern Polytechnical University Shaanxi P. R. China

3. School of Materials Science and Physics China University of Mining and Technology Xuzhou P. R. China

4. College of Materials Science and Engineering Xi'an University of Science and Technology Shaanxi P. R. China

5. National University of Science and Technology “MISIS” Moscow Russia

6. School of Materials and Chemical Technology Tokyo Institute of Technology Tokyo Japan

Abstract

AbstractTo enhance the oxidation resistance of HfB2‐SiC‐ZrSi2 coating, low‐loss film‐forming treatment (LFT) was employed to generate high‐quality oxygen barrier glass layers, and the modification effect of varying formation temperature on the oxidation resistance was investigated at 1700°C. The results demonstrated that, with LFT at 1500°C, the relatively modest oxidation activity and complete dispersion of metal oxide nanocrystals generated a compact and continuous composite glass layer, which caused a decreased oxidation activity at 1700°C. The excessive formation temperature might result in oxidized and porous coatings, while lower temperatures could lead to poor fluidity of the glass layer, rendering it challenging to achieve compact composite glass layers. The coating sample with LFT at 1500°C exhibited a carbon loss rate of 0.33 × 10−6 g·cm−2·s−1 and an oxygen permeability level of 0.28%, respectively, when oxidized at 1700°C. These results provide fundamental insights into the oxidation resistance mechanisms within the modified HfB2‐SiC‐ZrSi2 coating system.

Funder

Russian Science Foundation

Natural Science Foundation of Shaanxi Province

National Natural Science Foundation of China

Natural Science Foundation of Shaanxi Provincial Department of Education

Publisher

Wiley

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