Microstructure and thermal expansion behavior of diamond/SiC/(Si) composites fabricated by reactive vapor infiltration

Autor:	Haifeng Hu, Li-Min Wang, Li-Gen Wang, Zhenliang Yang, Xuanhui Qu, Xinbo He, Rongjun Liu
Rok vydání:	2014
Předmět:	Materials science Chemical vapor infiltration Composite number Materials Chemistry Ceramics and Composites engineering Sintering Diamond Composite material engineering.material Microstructure Infiltration (HVAC) Thermal expansion
Zdroj:	Journal of the European Ceramic Society. 34:1139-1147
ISSN:	0955-2219
DOI:	10.1016/j.jeurceramsoc.2013.10.038
Popis:	Diamond/SiC/(Si) composites were fabricated by Si vapor vacuum reactive infiltration. The coefficient of thermal expansion (CTE) of composites have been measured from 50 to 400 °C. With the diamond content increasing, CTE of composite decreased, simultaneously, the microstructure of the composites changed from core–shell particles embedded in the Si matrix to an interpenetrating network with the matrix. The CTEs of composites versus temperature matched well with those of Si. The Kerner model was modified according to the structural features of the composites, which exhibited more accurate predictions due to considering the core–shell structure of the composites. The thermal expansion behavior of the matrix was constrained by diamond/SiC network during heating.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::457b8137cb69f8334a664db68805a6db https://doi.org/10.1016/j.jeurceramsoc.2013.10.038 Zobrazit plný text záznamu Full Text from ScienceDirect