Influence of impulse frequency on anti-oxidation property of C-AlPO4 coating prepared by pulsed arc discharge deposition

被引：0

作者：

Luo, Xiangdong ^{[1
,2
]}

Huang, Jianfeng ^{[2
]}

Yang, Liuqing ^{[2
]}

Hao, Wei ^{[2
]}

Cao, Liyun ^{[2
]}

Fei, Jie ^{[2
]}

Wang, Kaitong ^{[2
]}

Zhang, Yongliang ^{[2
]}

机构：

[1] School of Resources and Environment, Shaanxi University of Science and Technology

[2] School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, Shaanxi

来源：

Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | 2013年 / 41卷 / 10期

关键词：

Anti-; oxidation; Carbon/carbon composites; Cristobalite aluminum phosphate; Impulse frequency; Pulsed arc discharge deposition;

D O I：

10.7521/j.issn.0454-5648.2013.10.22

中图分类号：

学科分类号：

摘要：

A C-AlPO4 anti-oxidation coating was prepared on SiC pre-coated C/C composites by pulsed arc discharge deposition. The phase compositions, microstructures and anti-oxidation properties of the as-prepared coatings were characterized by X-ray diffraction, scanning electron microscopy and isothermal oxidation test. The influence of impulse frequency on the microstructure was investigated. Results show that the dense and homogeneous C-AlPO4 coating was achieved when the impulse frequency reaches 1 000 Hz. The as-prepared coatings exhibit excellent anti-oxidation property, which could effectively protect C/C composites from oxidation at 1 773 K in air for 120 h with a mass loss of 0.5%. The anti-oxidation capability decrease of the coating at 1 773 K is due to the generation of cross-holes in the coating, which leads to the failure of self-curing by the metaphosphate glass layer after long time of oxidation.

引用

页码：1453 / 1458

页数：5

共 19 条

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