Effect of Steam Environment on Creep Behavior of Nextel720/Alumina-Mullite Ceramic Matrix Composite at Elevated Temperature
AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
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The tensile creep behavior of an oxide-oxide ceramic matrix composite CMC was investigated at 1000 and 1100 deg C in laboratory air and steam. The oxide-oxide CMC studied in this research was Nexteltrademark720alumina-mullite N720AM. The composite consists of N720fibers with 0 deg90 deg fiber orientation and a porous alumina-mullite matrix. Tensile-strain behavior was investigated and tensile properties measured at 900, 1000 and 1100 deg C. The effect of loading rate on tensile properties of N720AM ceramic matrix composite at 1100 deg C in steam was also examined. Creep-rupture tests were performed at 1100 deg C in laboratory air and steam, and at 1000 deg C only in steam.
- Laminates and Composite Materials