SiC/Si - MoSi2 /MoSi2 Oxidation Protective Coating for Carbon Material at 1700°C

Abstract:

Article Preview

A multi-layer coating SiC/ Si - MoSi2 /MoSi2 with good oxidation resistance has been developed by using the slurry-sintering method on the surface of graphite to improve the oxidation resistance performance at 1700 °C for more than 200 h. Microstructure and anti-oxidation property of the as-received coating were investigated. It was found that functionally gradient SiC/ Si - MoSi2 /MoSi2 coating was formed on the surface of the graphite substrate. The coating characterized by excellent thermal shock resistance can effectively protect the graphite from oxidation at 1700 °C for 200 h. The mechanism of the oxidation resistance of the coated graphite is also dicussed, and a dense SiO2 layer was formed on the surface of coating at 1700°C during the isotheral oxidation, which can protect graphite from oxidation at longer time.

Info:

Periodical:

Advanced Materials Research (Volumes 160-162)

Edited by:

Guojun Zhang and Jessica Xu

Pages:

1-6

DOI:

10.4028/www.scientific.net/AMR.160-162.1

Citation:

J. A. Zhao "SiC/Si - MoSi2 /MoSi2 Oxidation Protective Coating for Carbon Material at 1700°C", Advanced Materials Research, Vols. 160-162, pp. 1-6, 2011

Online since:

November 2010

Authors:

Keywords:

Export:

Price:

$35.00

[1] J.D. Buckley, Carbon-carbon, an overview. Ceram Bull. Vol. 67 (1988), p.364.

[2] J.R. Strife, J.E. Sheehan, Ceramic coatings for carbon-carbon composites. Ceram Bull. Vol. 67 (1988), p.369.

[3] L. Weiming , D.D. L Chung, Oxidation protection of carbon materials by acid phosphate impregnation. Carbon. Vol. 40 (2002), p.1249.

DOI: 10.1016/s0008-6223(01)00297-4

[4] H.J. Li, X.R. Zeng, A new SiC/ yttrium Silicate/ glass multi-layer oxidation protective coating for carbon/carbon composites. Carbon, Vol. 42 (2004), p.2356.

DOI: 10.1016/j.carbon.2004.05.005

[5] F. Smeacetto, M. Ferraris, M Salvo, Multilayer coating with self-sealing properties for carbon-carbon composites, Carbon, Vol. 41 (2003), p.2105.

DOI: 10.1016/s0008-6223(03)00228-8

[6] K. Hagen, T. Katja, S. Christian, H. Waldemar, Influence of molybdenum silicide additions on high high-temperature oxidation resistance of silicon nitride materials. J. Am. Ceram. Soc., Vol. 79 (1996), p.2429.

DOI: 10.1111/j.1151-2916.1996.tb08993.x

[7] J.M. Yang, S. M Jeng, Interface and mechanical behavior of MoSi2-based composites. J. Mater. Res. , Vol. 6 (1991), p.505.

[8] F. Smeacetto, M. Salvo, M. Ferraris , Oxidation protection multilayer coatings for carbon-carbon composites. Carbon. 40, Vol. 40 (2002), p.583.

DOI: 10.1016/s0008-6223(01)00151-8

[9] X.R. Zeng, H.J. Li, Y. Zheng, X.Q. Zhu, Oxidation resistance and self-sealingproperty of ceramic coatings for C/C composites. J. Chin. Aero., Vol. 12 (1999), p.114.

[10] T.L. Dhami, O.P. Bahl, B.R. Awasthy, Oxidation-resistant carbon-carbon composite up to 1700°C. Carbon, Vol. 33 (1995), p.479.

DOI: 10.1016/0008-6223(94)00173-w

[11] C. Chang, M. S Li, C.Z. Chen, Microstructure of high-temperature oxidation layer of Molybdenum disilicide. Acta Metrallurgica Sinica , p.119 Vol. 39 (2003), p.128.

In order to see related information, you need to Login.