High-Temperature Strength and Creep Behavior of Melt-Infiltrated SiC-Mo≤5Si3C≤1 Composites

Autor:	Eiji Tani, Kazuhisa Shobu, Qingshan Zhu, Kazushi Kishi, Seiki Umebayashi
Rok vydání:	2004
Předmět:	Materials science Argon Intermetallic chemistry.chemical_element Atmospheric temperature range Microstructure chemistry Creep Flexural strength Molybdenum Phase (matter) Materials Chemistry Ceramics and Composites Composite material
Zdroj:	Journal of the American Ceramic Society. 82:2276-2278
ISSN:	1551-2916 0002-7820
DOI:	10.1111/j.1151-2916.1999.tb02079.x
Popis:	Molybdenum carbosilicide composites (SiC-Mo ≤5 Si 3 C ≤1 ) were fabricated via the melt-infiltration process. The fracture behavior of the composites was studied from room temperature up to 1800°C in 1 atm (∼10 5 Pa) of argon. The bend strength of the composites slightly increased at ∼1200°C, because of the brittle-ductile transition of the intermetallic phase. The composites retained ∼90% of their room-temperature strength, even at 1700°C. Compressive creep tests were performed over a temperature range of 1760°-1850°C and a stress range of 200-250 MPa. The creep rate of the SiC-Mo ≤5 Si 3 C ≤1 composites was approximately an order of magnitude higher than that of reaction-bonded SiC.
Databáze:	OpenAIRE
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