Preperation of Silicon Carbide Oxidation Protection Film on Carbon Thermal Insulator Using Polycarbosilane and Its Characterization

Su-Bin Ahn; Yoonjoo Lee; Jung-Won Bang; Dong-Geun Shin; Woo-Teck Kwon

doi:10.3740/MRSK.2017.27.9.471

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Preperation of Silicon Carbide Oxidation Protection Film on Carbon Thermal Insulator Using Polycarbosilane and Its Characterization 폴리카보실란을 이용하여 탄소단열재에 코팅한 실리콘카바이드 코팅막의 내산화 특성

September 2017. pp. 471-476

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Abstract

In order to improve the high temperature oxidation resistance and lifespan of mat type porous carbon insulation, SiC was coated on carbon insulation by solution coating using polycarbosilane solution, curing in an oxidizing atmosphere at 200 °C, and pyrolysis at temperatures up to 1200 °C. The SiOC phase formed during the pyrolysis process was converted into SiC crystals as the heat treatment temperature increased, and a SiC coating with a thickness of 10-15 nm was formed at 1600 °C. The SiC coated specimen showed a weight reduction of 8.6 % when it was kept in an atmospheric environment of 700 °C for 1 hour. On the other hand, the thermal conductivity was 0.17W/mK, and no difference between states before and after coating was observed at all.

Keywords

fibers

insulators

polycarbosilane

SiC coating

oxidation resistance

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Information

Publisher :Materials Research Society of Korea
Publisher(Ko) :한국재료학회
Journal Title :Korean Journal of Materials Research
Journal Title(Ko) :한국재료학회지
Volume : 27
No :9
Pages :471-476
Received Date : 2017-05-25
Revised Date : 2017-08-14
Accepted Date : 2017-08-14
DOI :https://doi.org/10.3740/MRSK.2017.27.9.471

Korean Journal of Materials Research ISSN:1225-0562(Print) 2287-7258(Online) 한국재료학회지

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