High thermal conductivity SiC/SiC composites for fusion applications

Autor:	W. Kowbel, G.E. Youngblood, K.L Tsou, C. Bruce, J.C. Withers, K Patel
Rok vydání:	2000
Předmět:	Nuclear and High Energy Physics Fabrication Materials science Composite number Carbide chemistry.chemical_compound Thermal conductivity Nuclear Energy and Engineering chemistry Flexural strength Silicon carbide General Materials Science Graphite Composite material Porosity
Zdroj:	Journal of Nuclear Materials. :570-573
ISSN:	0022-3115
DOI:	10.1016/s0022-3115(00)00213-0
Popis:	SiC/SiC composites offer excellent potential for fusion energy as well as numerous commercial applications. High manufacturing cost and very low through-the-thickness (transverse) thermal conductivity (below 15 W/m K) hinders wider applications of SiC/SiC composites. To overcome these obstacles, a low cost chemical vapor reaction (CVR) process was developed to fabricate crystalline, high-purity SiC fibers. Several variations of the CVR process were used to fabricate SiC/SiC composites. An unirradiated, 4-mm thick SiC/SiC composite was completely CVR-converted from a converted SiC fiber preform with a pitch graphite matrix, and exhibited a bulk density of 2.65 g/cc, 10% open porosity, room temperature (RT) and 1000°C thermal conductivity values of 70 and 35 W/m K, respectively, and an RT bend strength of 200 MPa.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1b6d98ea48b0f68e2513fe2361314541 https://doi.org/10.1016/s0022-3115(00)00213-0 Zobrazit plný text záznamu Full Text from ScienceDirect