SiC/Cr-Al-Si/glass multilayer oxidation resistant coating for carbon/carbon composites

M. Huang; K. Z. Li; H. J. Li; Q. G. Fu; Y. Wang

doi:10.1179/174329409X409431

SiC/Cr-Al-Si/glass multilayer oxidation resistant coating for carbon/carbon composites

M. Huang, K. Z. Li, H. J. Li, Q. G. Fu, Y. Wang

School of Materials Sience and Engineering

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Multilayer oxidation resistant SiC/Cr-Al-Si/glass coating for C/C composites was prepared by a three step method of pack cementation, plasma spraying and slurry dipping. The phase composition, microstructure and oxidation resistance of multilayer SiC/Cr-Al-Si/glass coating were studied by XRD, SEM and isothermal oxidation test at 1773 K in air respectively. Double layer SiC/Cr-Al-Si coating consisting of Al_3·21Cr _0·47, Cr₃Si and Al₂O₃ can protect C/C composites from oxidation for only 61 h due to its high porosity. When a layer of borosilicate glass doped with MoSi2 was coated on the surface of the as sprayed Cr-Al-Si coating, multilayers of SiC/Cr-Al-Si/glass coating were formed such that they can protect C/C composites from oxidation for 95 h with only 5·3% weight loss and the corresponding weight loss rate is only 0·92×10²⁴ g cm^-2 h^-1. The positive effect of the borosilicate glass coating on the oxidation resistance of the coating may be attributed to its own fluidity at high temperature.

Original language	English
Pages (from-to)	340-344
Number of pages	5
Journal	Surface Engineering
Volume	27
Issue number	5
DOIs	https://doi.org/10.1179/174329409X409431
State	Published - Jun 2011

Keywords

Carbon/carbon composites
Multilayer coating
Oxidation resistance
SiC/Cr-Al-Si/glass

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10.1179/174329409X409431

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title = "SiC/Cr-Al-Si/glass multilayer oxidation resistant coating for carbon/carbon composites",

abstract = "Multilayer oxidation resistant SiC/Cr-Al-Si/glass coating for C/C composites was prepared by a three step method of pack cementation, plasma spraying and slurry dipping. The phase composition, microstructure and oxidation resistance of multilayer SiC/Cr-Al-Si/glass coating were studied by XRD, SEM and isothermal oxidation test at 1773 K in air respectively. Double layer SiC/Cr-Al-Si coating consisting of Al3·21Cr 0·47, Cr3Si and Al2O3 can protect C/C composites from oxidation for only 61 h due to its high porosity. When a layer of borosilicate glass doped with MoSi2 was coated on the surface of the as sprayed Cr-Al-Si coating, multilayers of SiC/Cr-Al-Si/glass coating were formed such that they can protect C/C composites from oxidation for 95 h with only 5·3% weight loss and the corresponding weight loss rate is only 0·92×1024 g cm-2 h-1. The positive effect of the borosilicate glass coating on the oxidation resistance of the coating may be attributed to its own fluidity at high temperature.",

keywords = "Carbon/carbon composites, Multilayer coating, Oxidation resistance, SiC/Cr-Al-Si/glass",

author = "M. Huang and Li, {K. Z.} and Li, {H. J.} and Fu, {Q. G.} and Y. Wang",

year = "2011",

month = jun,

doi = "10.1179/174329409X409431",

language = "英语",

volume = "27",

pages = "340--344",

journal = "Surface Engineering",

issn = "0267-0844",

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TY - JOUR

T1 - SiC/Cr-Al-Si/glass multilayer oxidation resistant coating for carbon/carbon composites

AU - Huang, M.

AU - Li, K. Z.

AU - Li, H. J.

AU - Fu, Q. G.

AU - Wang, Y.

PY - 2011/6

Y1 - 2011/6

N2 - Multilayer oxidation resistant SiC/Cr-Al-Si/glass coating for C/C composites was prepared by a three step method of pack cementation, plasma spraying and slurry dipping. The phase composition, microstructure and oxidation resistance of multilayer SiC/Cr-Al-Si/glass coating were studied by XRD, SEM and isothermal oxidation test at 1773 K in air respectively. Double layer SiC/Cr-Al-Si coating consisting of Al3·21Cr 0·47, Cr3Si and Al2O3 can protect C/C composites from oxidation for only 61 h due to its high porosity. When a layer of borosilicate glass doped with MoSi2 was coated on the surface of the as sprayed Cr-Al-Si coating, multilayers of SiC/Cr-Al-Si/glass coating were formed such that they can protect C/C composites from oxidation for 95 h with only 5·3% weight loss and the corresponding weight loss rate is only 0·92×1024 g cm-2 h-1. The positive effect of the borosilicate glass coating on the oxidation resistance of the coating may be attributed to its own fluidity at high temperature.

AB - Multilayer oxidation resistant SiC/Cr-Al-Si/glass coating for C/C composites was prepared by a three step method of pack cementation, plasma spraying and slurry dipping. The phase composition, microstructure and oxidation resistance of multilayer SiC/Cr-Al-Si/glass coating were studied by XRD, SEM and isothermal oxidation test at 1773 K in air respectively. Double layer SiC/Cr-Al-Si coating consisting of Al3·21Cr 0·47, Cr3Si and Al2O3 can protect C/C composites from oxidation for only 61 h due to its high porosity. When a layer of borosilicate glass doped with MoSi2 was coated on the surface of the as sprayed Cr-Al-Si coating, multilayers of SiC/Cr-Al-Si/glass coating were formed such that they can protect C/C composites from oxidation for 95 h with only 5·3% weight loss and the corresponding weight loss rate is only 0·92×1024 g cm-2 h-1. The positive effect of the borosilicate glass coating on the oxidation resistance of the coating may be attributed to its own fluidity at high temperature.

KW - Carbon/carbon composites

KW - Multilayer coating

KW - Oxidation resistance

KW - SiC/Cr-Al-Si/glass

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DO - 10.1179/174329409X409431

M3 - 文章

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SN - 0267-0844

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SP - 340

EP - 344

JO - Surface Engineering

JF - Surface Engineering

IS - 5

ER -

SiC/Cr-Al-Si/glass multilayer oxidation resistant coating for carbon/carbon composites

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