Effects of voltage on microstructure and oxidation resistance of SiB6-MoSi2 coating deposited by pulse arc discharge deposition

被引：14
|
作者：
Zhang Yong-Liang [1 ]
Huang Jian-Feng [1 ,2 ]
Zhu Kong-Jun [2 ]
Cao Li-Yun [1 ]
Li Cui-Yan [1 ]
Zhou Lei [1 ]
Zhang Bo-Ye [1 ]
Kong Wei-Hua [1 ]
Zhang Bo [1 ]
机构：
[1] Shaanxi Univ Sci & Technol, Sch Mat Sci & Engn, Xian 710021, Shaanxi, Peoples R China
[2] Nanjing Univ Aeronaut & Astronaut, State Key Lab Mech & Control Mech Struct, Nanjing 210016, Jiangsu, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2015年 / 340卷
基金：
中国国家自然科学基金;
关键词：
Carbon/carbon composites; Coating; Oxidation resistance; Pulse arc discharge deposition; COATED CARBON/CARBON COMPOSITES; C/C COMPOSITES;
D O I：
10.1016/j.apsusc.2015.03.003
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：
To protect carbon/carbon (C/C) composites against oxidation, a SiB6-MoSi2 coating was prepared by pulse arc discharge deposition (PADD). The influence of deposition voltage on arc discharge sintering ability, microstructure and oxidation resistance of the SiB6-MoSi2 coatings was investigated. Results show that the oxidation resistance of the coating is improved when the voltage increases from 350 to 450 V. The dense and good crystallization SiB6-MoSi2 coating was obtained with sufficient arc discharge sintering energy when the voltage is 450 V. And the multilayer coatings can protect C/C composites from oxidation in air at 1773 K for 164 h with a weight loss of 2.04%. The evaporation of the molten glass layer and MoO3 is the main reason for the failure of the multilayer coatings. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：43 / 48
页数：6
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