Study of the SiC-TaSi2/MoSi2 multilayer oxidation protective coating for carbon/carbon composite

Dangshe Hou; Kezhi Li; Hejun Li; Qiangang Fu; Jian Wei; Yonggang He

Study of the SiC-TaSi₂/MoSi₂ multilayer oxidation protective coating for carbon/carbon composite

Dangshe Hou
, Kezhi Li
, Hejun Li
, Qiangang Fu
, Jian Wei
, Yonggang He

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

5 Scopus citations

Abstract

A SiC-TaSi₂/MoSi₂ multilayer oxidation protective coating on carbon/carbon (C/C) composite was prepared by pack cementation. Effects of the contents of Ta and Mo in the second-step pack powders on the microstructure and high temperature anti-oxidation property of the multi-coating were studied by XRD, SEM, EDS and isothermal oxidation test. The results show that the multi-coating prepared at the mol ratio of 1:1 of Ta and Mo has a thicker, denser structure than those at the other mole ratios of 0:1, 1:3, 3:1, on which the stable and dense glassy SiO₂ film could be formed during oxidation test. After 326 h oxidation in air at 1500°C and thermal cycling between 1500°C and room temperature for 23 times, the weight loss of the coated specimen was only 0.97%, implying that the multi-coating prepared at the mol ratio of 1:1 of Ta and Mo has excellent oxidation protective ability and thermal shock resistance.

Original language	English
Pages (from-to)	331-335
Number of pages	5
Journal	Jinshu Xuebao/Acta Metallurgica Sinica
Volume	44
Issue number	3
State	Published - Mar 2008

Keywords

C/C composites
Oxidation protection
SiC-TaSi/MoSi coating
Thermal shock resistance

Cite this

@article{e250af7f694d4be29626fff931e5f31e,

title = "Study of the SiC-TaSi2/MoSi2 multilayer oxidation protective coating for carbon/carbon composite",

abstract = "A SiC-TaSi2/MoSi2 multilayer oxidation protective coating on carbon/carbon (C/C) composite was prepared by pack cementation. Effects of the contents of Ta and Mo in the second-step pack powders on the microstructure and high temperature anti-oxidation property of the multi-coating were studied by XRD, SEM, EDS and isothermal oxidation test. The results show that the multi-coating prepared at the mol ratio of 1:1 of Ta and Mo has a thicker, denser structure than those at the other mole ratios of 0:1, 1:3, 3:1, on which the stable and dense glassy SiO2 film could be formed during oxidation test. After 326 h oxidation in air at 1500°C and thermal cycling between 1500°C and room temperature for 23 times, the weight loss of the coated specimen was only 0.97\%, implying that the multi-coating prepared at the mol ratio of 1:1 of Ta and Mo has excellent oxidation protective ability and thermal shock resistance.",

keywords = "C/C composites, Oxidation protection, SiC-TaSi/MoSi coating, Thermal shock resistance",

author = "Dangshe Hou and Kezhi Li and Hejun Li and Qiangang Fu and Jian Wei and Yonggang He",

year = "2008",

month = mar,

language = "英语",

volume = "44",

pages = "331--335",

journal = "Jinshu Xuebao/Acta Metallurgica Sinica",

issn = "0412-1961",

publisher = "Chinese Academy of Sciences",

number = "3",

}

TY - JOUR

T1 - Study of the SiC-TaSi2/MoSi2 multilayer oxidation protective coating for carbon/carbon composite

AU - Hou, Dangshe

AU - Li, Kezhi

AU - Li, Hejun

AU - Fu, Qiangang

AU - Wei, Jian

AU - He, Yonggang

PY - 2008/3

Y1 - 2008/3

N2 - A SiC-TaSi2/MoSi2 multilayer oxidation protective coating on carbon/carbon (C/C) composite was prepared by pack cementation. Effects of the contents of Ta and Mo in the second-step pack powders on the microstructure and high temperature anti-oxidation property of the multi-coating were studied by XRD, SEM, EDS and isothermal oxidation test. The results show that the multi-coating prepared at the mol ratio of 1:1 of Ta and Mo has a thicker, denser structure than those at the other mole ratios of 0:1, 1:3, 3:1, on which the stable and dense glassy SiO2 film could be formed during oxidation test. After 326 h oxidation in air at 1500°C and thermal cycling between 1500°C and room temperature for 23 times, the weight loss of the coated specimen was only 0.97%, implying that the multi-coating prepared at the mol ratio of 1:1 of Ta and Mo has excellent oxidation protective ability and thermal shock resistance.

AB - A SiC-TaSi2/MoSi2 multilayer oxidation protective coating on carbon/carbon (C/C) composite was prepared by pack cementation. Effects of the contents of Ta and Mo in the second-step pack powders on the microstructure and high temperature anti-oxidation property of the multi-coating were studied by XRD, SEM, EDS and isothermal oxidation test. The results show that the multi-coating prepared at the mol ratio of 1:1 of Ta and Mo has a thicker, denser structure than those at the other mole ratios of 0:1, 1:3, 3:1, on which the stable and dense glassy SiO2 film could be formed during oxidation test. After 326 h oxidation in air at 1500°C and thermal cycling between 1500°C and room temperature for 23 times, the weight loss of the coated specimen was only 0.97%, implying that the multi-coating prepared at the mol ratio of 1:1 of Ta and Mo has excellent oxidation protective ability and thermal shock resistance.

KW - C/C composites

KW - Oxidation protection

KW - SiC-TaSi/MoSi coating

KW - Thermal shock resistance

UR - https://www.scopus.com/pages/publications/41949091206

M3 - 文章

AN - SCOPUS:41949091206

SN - 0412-1961

VL - 44

SP - 331

EP - 335

JO - Jinshu Xuebao/Acta Metallurgica Sinica

JF - Jinshu Xuebao/Acta Metallurgica Sinica

IS - 3

ER -

Study of the SiC-TaSi₂/MoSi₂ multilayer oxidation protective coating for carbon/carbon composite

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