期刊
SURFACE & COATINGS TECHNOLOGY
卷 235, 期 -, 页码 127-133出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2013.07.023
关键词
Carbon/carbon composites; ZrSiO4-Y2O3 coating; Supersonic plasma spraying; Oxidation
资金
- National Natural Science Foundation of China [51221001, 51222207]
- 111 Project of China [B08040]
An Y2O3 modified SiC/ZrSiO4 multilayer coating for carbon/carbon (C/C) composites against oxidation at high temperature was prepared by supersonic plasma spraying technique and pack cementation. The microstructure and phase compositions of the coatings were characterized by SEM, EDS and XRD. Oxidation test results show that the coating could protect C/C composites from oxidation at 1823 K in air for 210 hand withstand 25 thermal cycles between room temperature and 1823 K. The excellent protective ability is attributed to the fact that Y2O3 in coating can restrain the phase transformation of the ZrO2 and improve the stability of the SiO2 glass by formation of Y2Si2O7 phase during oxidation. (C) 2013 Elsevier B.V. All rights reserved.
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