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

页码：43 / 48

页数：6