Mo-Si-Al-C multiphase oxidation protective coating for carbon/carbon composites

被引：21

作者：

Li, Ting ^{[1
]}

Li, Hejun ^{[1
]}

Shi, Xiaohong ^{[1
]}

Cheng, Jing ^{[1
]}

Liu, Lei ^{[1
]}

机构：

[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Carbon Carbon Composites Res Ctr, Xian 710072, Shaanxi, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2013年 / 276卷

基金：

中国国家自然科学基金;

关键词：

Carbon/carbon composites; Mo-Si-Al-C multiphase coating; Oxidation; HIGH-TEMPERATURE OXIDATION; X INTERMETALLICS X=AL; BEHAVIOR; TA; ZR; TI;

D O I：

10.1016/j.apsusc.2013.03.050

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：

A multiphase coating based on Mo-Si-Al-C was formed on the surface of carbon/carbon (C/C) composites by a two-step pack cementation technique in argon atmosphere. Microstructure of the multiphase coating was characterized by X-ray diffraction, scanning electron microscope and energy dispersive spectroscope. X-ray diffraction analysis showed that the multiphase coating was composed of SiC, Mo (Si, Al)(2), MoSi2 and Al4Mo3Si2. The multiphase coating coated C/C composites exhibited a weight loss of only 0.409% after oxidation in air at 1773 K for 510 h and could endure thermal cycling between 1773 K and room temperature for 25 times. The weight loss of the coated C/C composites was primarily due to the reaction between C/C matrix and oxygen. (C) 2013 Published by Elsevier B.V.

引用

页码：154 / 158

页数：5

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