Si-Mo-Cr coating for C/SiC coated carbon/carbon composites against oxidation

Y. L. Zhang; H. J. Li; P. Y. Wang; K. Z. Li; X. R. Zeng

doi:10.1179/1743294412Y.0000000005

Si-Mo-Cr coating for C/SiC coated carbon/carbon composites against oxidation

Y. L. Zhang, H. J. Li, P. Y. Wang, K. Z. Li, X. R. Zeng

School of Materials Sience and Engineering

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

6 Scopus citations

Abstract

Si-Mo-Cr oxidation protective coating has been prepared on the surface of C/SiC coated carbon/ carbon (C/C) composites by pack cementation technique. The phase composition and microstructure of the as prepared coatings were characterised by X-ray diffraction, scanning electron microscopy (SEM) and energy dispersion spectrum (EDS) analyses. The oxidation behaviour of the coated C/C specimens was also investigated at 1500°C in air. The results show that the as prepared coating is mainly composed of SiC, MoSi ₂, CrSi ₂ and Si. The coating characterised by excellent oxidation resistance and thermal shock resistance can effectively protect C/C composites from oxidation for 186 h at 1500°C in air and endure the thermal cycle between 1500uC and room temperature for nine times, while the corresponding weight loss is only 0?33%. The excellent oxidation protection ability of the coating is primarily attributed to the formation of a compound glass layer, including SiO ₂ and Cr2O ₃.

Original language	English
Pages (from-to)	544-547
Number of pages	4
Journal	Surface Engineering
Volume	28
Issue number	7
DOIs	https://doi.org/10.1179/1743294412Y.0000000005
State	Published - Aug 2012

Keywords

Coating
Composites
Oxidation

Access to Document

10.1179/1743294412Y.0000000005

Cite this

@article{e712ff0bd85a48b7ac8e594bca4b44f2,

title = "Si-Mo-Cr coating for C/SiC coated carbon/carbon composites against oxidation",

abstract = "Si-Mo-Cr oxidation protective coating has been prepared on the surface of C/SiC coated carbon/ carbon (C/C) composites by pack cementation technique. The phase composition and microstructure of the as prepared coatings were characterised by X-ray diffraction, scanning electron microscopy (SEM) and energy dispersion spectrum (EDS) analyses. The oxidation behaviour of the coated C/C specimens was also investigated at 1500°C in air. The results show that the as prepared coating is mainly composed of SiC, MoSi 2, CrSi 2 and Si. The coating characterised by excellent oxidation resistance and thermal shock resistance can effectively protect C/C composites from oxidation for 186 h at 1500°C in air and endure the thermal cycle between 1500uC and room temperature for nine times, while the corresponding weight loss is only 0?33%. The excellent oxidation protection ability of the coating is primarily attributed to the formation of a compound glass layer, including SiO 2 and Cr2O 3.",

keywords = "Coating, Composites, Oxidation",

author = "Zhang, {Y. L.} and Li, {H. J.} and Wang, {P. Y.} and Li, {K. Z.} and Zeng, {X. R.}",

year = "2012",

month = aug,

doi = "10.1179/1743294412Y.0000000005",

language = "英语",

volume = "28",

pages = "544--547",

journal = "Surface Engineering",

issn = "0267-0844",

publisher = "SAGE Publications Ltd",

number = "7",

}

TY - JOUR

T1 - Si-Mo-Cr coating for C/SiC coated carbon/carbon composites against oxidation

AU - Zhang, Y. L.

AU - Li, H. J.

AU - Wang, P. Y.

AU - Li, K. Z.

AU - Zeng, X. R.

PY - 2012/8

Y1 - 2012/8

N2 - Si-Mo-Cr oxidation protective coating has been prepared on the surface of C/SiC coated carbon/ carbon (C/C) composites by pack cementation technique. The phase composition and microstructure of the as prepared coatings were characterised by X-ray diffraction, scanning electron microscopy (SEM) and energy dispersion spectrum (EDS) analyses. The oxidation behaviour of the coated C/C specimens was also investigated at 1500°C in air. The results show that the as prepared coating is mainly composed of SiC, MoSi 2, CrSi 2 and Si. The coating characterised by excellent oxidation resistance and thermal shock resistance can effectively protect C/C composites from oxidation for 186 h at 1500°C in air and endure the thermal cycle between 1500uC and room temperature for nine times, while the corresponding weight loss is only 0?33%. The excellent oxidation protection ability of the coating is primarily attributed to the formation of a compound glass layer, including SiO 2 and Cr2O 3.

AB - Si-Mo-Cr oxidation protective coating has been prepared on the surface of C/SiC coated carbon/ carbon (C/C) composites by pack cementation technique. The phase composition and microstructure of the as prepared coatings were characterised by X-ray diffraction, scanning electron microscopy (SEM) and energy dispersion spectrum (EDS) analyses. The oxidation behaviour of the coated C/C specimens was also investigated at 1500°C in air. The results show that the as prepared coating is mainly composed of SiC, MoSi 2, CrSi 2 and Si. The coating characterised by excellent oxidation resistance and thermal shock resistance can effectively protect C/C composites from oxidation for 186 h at 1500°C in air and endure the thermal cycle between 1500uC and room temperature for nine times, while the corresponding weight loss is only 0?33%. The excellent oxidation protection ability of the coating is primarily attributed to the formation of a compound glass layer, including SiO 2 and Cr2O 3.

KW - Coating

KW - Composites

KW - Oxidation

UR - http://www.scopus.com/inward/record.url?scp=84865270462&partnerID=8YFLogxK

U2 - 10.1179/1743294412Y.0000000005

DO - 10.1179/1743294412Y.0000000005

M3 - 文章

AN - SCOPUS:84865270462

SN - 0267-0844

VL - 28

SP - 544

EP - 547

JO - Surface Engineering

JF - Surface Engineering

IS - 7

ER -

Si-Mo-Cr coating for C/SiC coated carbon/carbon composites against oxidation

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this