Tensile stress rupture of SiC_f/SiC_m minicomposites with carbon and boron nitride interphases at elevated temperatures in air

摘要

The stress-rupture properties of precracked minicompos- ites were determined in air at temperatures in the range of 700°-1200 deg C. The minicomposites systems consisted of a single tow of Nicalon or Hi-Nicalon fibers with carbon or boron nitride (BN) interphases and a chemical-vapor- infiltrated silicon carbide (CVI-SiC) matrix.