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The synthesis of TiAl intermetallic films by a rf magnetron sputtering and the mechanical properties of the microcomposites with SiC fibers

Published online by Cambridge University Press:  03 March 2011

Takakazu Suzuki ,
Hiroyuki Umehara  and
Ryuichi Hayashi
Takakazu Suzuki
Affiliation:
National Institute of Materials and Chemical Research (NIMC), Agency of Industrial Science and Technology, M.I. T.I., 1–1 Higashi, Tsukuba, Ibaraki 305, Japan
Hiroyuki Umehara
Affiliation:
National Institute of Materials and Chemical Research (NIMC), Agency of Industrial Science and Technology, M.I. T.I., 1–1 Higashi, Tsukuba, Ibaraki 305, Japan
Ryuichi Hayashi
Affiliation:
National Institute of Materials and Chemical Research (NIMC), Agency of Industrial Science and Technology, M.I. T.I., 1–1 Higashi, Tsukuba, Ibaraki 305, Japan
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Abstract

The intermetallic matrix composites reinforced with heat-resistive fibers are expected to improve the ductility and the toughness of intermetallic compounds. Titanium aluminide, TiAl, shows a unique behavior that increases the mechanical strength with increasing temperature up to 1000 K. Vapor phase processings for manufacturing near-net-shaped composites or continuous fiber-reinforced composites will be hopeful methods. The synthesis of TiAl by a magnetron sputtering using a multiple target has been successfully established, and the microcomposites with SiC fibers have been prepared. The TiAl film was evaluated by Auger electron spectroscopy and the x-ray analysis and so on. The tensile strength properties of the SiC/TiAl microcomposites, of which the interface bonding was controlled with the powers of sputtering, were estimated. The results show that the strength properties of SiC/TiAl microcomposites are decreasing with increasing the power of the sputtering, and the irradiation-cured SiC fiber has better compatibility with TiAl than the oxidation-cured SiC fiber.

Type
Articles
Information
Journal of Materials Research , Volume 9 , Issue 4 , April 1994 , pp. 1028 - 1034
Copyright
Copyright © Materials Research Society 1994

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