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A SiC/Mo( Si-x , Al1-x ) (2) oxidation-resistant coating for carbon/carbon composites
Alternative TitleNew Carbon Mater.
Wang Xiang-hui1; Weng Li1; Zhang Wei-gang2
2014-04-01
Source PublicationNEW CARBON MATERIALS
ISSN1007-8827
Volume29Issue:2Pages:126-131
AbstractSiC/Mo( Si-x, Al1-x )(2) multilayer coatings were prepared on carbon/carbon ( C/C) composites using a multi-phase reaction technique to improve their high temperature oxidation resistance. The microstructure and phase compositions of the multilayer coatings were investigated by SEM, XRD and EDS. The coating exhibits a binary-layer microstructure, i. e. an outer Mo ( Si-x , Al1-x)(2) layer and an inner SiC layer with a small amount of Mo-4 8Si3C0.6. The oxidation behavior of the coated C/C composites was evaluated in a supersonic flow of about 1 500 m center dot s(-1) at 1 800K in a wind tunnel. No destruction of the coated C/C composites was found after 4 s oxidation after 24 exposures and thermal cycling between room temperature and 2550K for 24 times in air. The excellent oxidation resistance and thermal shock resistance are attributed to a high cohesion between the layers and the C/C composite, and the formation of a continuous and stable glassy film consisting of SiO2 and Al2O3 on the coated layers during oxidation.; SiC/Mo( Si-x, Al1-x )(2) multilayer coatings were prepared on carbon/carbon ( C/C) composites using a multi-phase reaction technique to improve their high temperature oxidation resistance. The microstructure and phase compositions of the multilayer coatings were investigated by SEM, XRD and EDS. The coating exhibits a binary-layer microstructure, i. e. an outer Mo ( Si-x , Al1-x)(2) layer and an inner SiC layer with a small amount of Mo-4 8Si3C0.6. The oxidation behavior of the coated C/C composites was evaluated in a supersonic flow of about 1 500 m center dot s(-1) at 1 800K in a wind tunnel. No destruction of the coated C/C composites was found after 4 s oxidation after 24 exposures and thermal cycling between room temperature and 2550K for 24 times in air. The excellent oxidation resistance and thermal shock resistance are attributed to a high cohesion between the layers and the C/C composite, and the formation of a continuous and stable glassy film consisting of SiO2 and Al2O3 on the coated layers during oxidation.
KeywordCarbon/carbon Composites Sic/mo ( Si-x Multi-phase Reaction Technique Al1-x ) (2) Coatings Oxidation Behavior Thermal Shock Resistance
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/S1872-5805(14)60130-X
URL查看原文
Indexed BySCI
Language英语
WOS KeywordCARBON-CARBON COMPOSITES ; PROTECTION ; BEHAVIOR ; LAYER
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000335282100007
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/10984
Collection研究所(批量导入)
Affiliation1.Natl Inst Clean & Low Carbon Energy, Beijing 102209, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Wang Xiang-hui,Weng Li,Zhang Wei-gang. A SiC/Mo( Si-x , Al1-x ) (2) oxidation-resistant coating for carbon/carbon composites[J]. NEW CARBON MATERIALS,2014,29(2):126-131.
APA Wang Xiang-hui,Weng Li,&Zhang Wei-gang.(2014).A SiC/Mo( Si-x , Al1-x ) (2) oxidation-resistant coating for carbon/carbon composites.NEW CARBON MATERIALS,29(2),126-131.
MLA Wang Xiang-hui,et al."A SiC/Mo( Si-x , Al1-x ) (2) oxidation-resistant coating for carbon/carbon composites".NEW CARBON MATERIALS 29.2(2014):126-131.
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