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Advances in Materials Science and Engineering
Volume 2017, Article ID 6383084, 8 pages
https://doi.org/10.1155/2017/6383084
Research Article

SiC Conversion Coating Prepared from Silica-Graphite Reaction

1Department of Mechanical Engineering, Chosun University, Gwangju 501-759, Republic of Korea
2Department of Hydrogen & Fuel Cell Tech., Dongshin University, Jeonnam 520-714, Republic of Korea

Correspondence should be addressed to Young-Hoon Yun; rk.ca.usd@2hnuy

Received 4 September 2016; Revised 7 December 2016; Accepted 13 December 2016; Published 14 February 2017

Academic Editor: Pavel Lejcek

Copyright © 2017 Back-Sub Sung and Young-Hoon Yun. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The β-SiC conversion coatings were successfully synthesized by the SiO(v)-graphite(s) reaction between silica powder and graphite specimen. This paper is to describe the effects on the characteristics of the SiC conversion coatings, fabricated according to two different reaction conditions. FE-SEM, FE-TEM microstructural morphologies, XRD patterns, pore size distribution, and oxidation behavior of the SiC-coated graphite were investigated. In the XRD pattern and SAD pattern, the coating layers showed cubic SiC peak as well as hexagonal SiC peak. The SiC coatings showed somewhat different characteristics with the reaction conditions according to the position arrangement of the graphite samples. The SiC coating on graphite, prepared in reaction zone (2), shows higher intensity of beta-SiC main peak (111) in XRD pattern as well as rather lower porosity and smaller main pore size peak under 1 μm.