Journal of Thermal Spray Technology

, Volume 21, Issue 1, pp 16–22 | Cite as

SiC Coatings for Carbon/Carbon Composites Fabricated by Vacuum Plasma Spraying Technology

Peer-Reviewed
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Revised:

Abstract

SiC coatings for carbon/carbon (C/C) composites have been prepared by the combination process of vacuum plasma spraying technology and heat treatment. The SiC coatings were formed by the reaction of C/C substrates with as-sprayed silicon coatings deposited by vacuum plasma spraying. The preparation temperature and the thickness of original silicon coatings have great influence on the microstructure and the thickness of the synthesized SiC coatings. The results indicated that a continuous and dense SiC coating has been produced on the surface of C/C substrates. The SiC coatings prepared at 2073 K with the silicon coatings of 230 μm thickness, exhibited a low mass loss of 2.56% in the plasma jet with temperature about 2473 K and duration of 420 s in atmosphere. The present results implied that vacuum plasma spraying technology combined with heat treatment was an acceptable method for synthesis of protective SiC coatings for C/C composites.

Keywords

C/C composites heat treatment plasma spraying technology SiC coatings 
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Notes

Acknowledgments

This work was jointly supported by Innovative Foundation of Shanghai University, Shanghai Leading Academic Discipline Project under grant s30107, and the Key Laboratory of Inorganic Coating Materials, Chinese Academy of Sciences. The National Natural Science Foundation of China under grant 51102267, Shanghai Science and Technology R&D Fund under grant 11ZR1442100.

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Copyright information

© ASM International 2011

Authors and Affiliations

  1. 1.School of Material Science and EngineeringShanghai UniversityShanghaiChina
  2. 2.Key Laboratory of Inorganic Coating MaterialsShanghai Institute of Ceramics, Chinese Academy of SciencesShanghaiChina

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