In situ reactive fabrication of ZrC–SiC coating on Cf/ZrC–SiC composite

ZrC–SiC coating on Cf/ZrC–SiC composite was fabricated via in situ reaction using zirconium powder, silicon powder, and phenolic resin as raw materials. The coated composites exhibited excellent oxidation performance. In particular, the coating closely adhered onto the composites, and had a uniform...

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Bibliographic Details
Published in:Journal of Asian Ceramic Societies 2015-06, Vol.3 (2), p.178-182
Main Authors: Li, Qinggang, Wang, Zhi, Shi, Guopu, Gong, Lifei
Format: Article
Language:English
Subjects:
Anti-oxidation properties
In situ reactive
ZrC–SiC coating
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Description
Summary:ZrC–SiC coating on Cf/ZrC–SiC composite was fabricated via in situ reaction using zirconium powder, silicon powder, and phenolic resin as raw materials. The coated composites exhibited excellent oxidation performance. In particular, the coating closely adhered onto the composites, and had a uniform thickness of approximately 90μm and did not show significant cracking. Even after 30min of oxidation at 1700°C in a muffle furnace, the coating thickness of 90μm remained. Meanwhile, the density of the coating was increased with oxidation because the pores on the surface were filled with the mixtures of ZrC, ZrO2, and SiC. Three distinct layers were formed in the composite, namely, surface oxide, intermediate and unoxidised layers. Therefore, the coating effectively protected the composites from oxidation.
ISSN:2187-0764
2187-0764
DOI:10.1016/j.jascer.2015.02.001