514 金属系多機能複合材料の作製と評価

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This paper describes development of SiC/Al active composite using continuous and/or discontinuous fiber and SiC continuous fiber/Ni active composite aiming at higher temperature application. In the case of SiC/Al composite, effect of composite type on its curvature and tensile strength was examined. Though curvature of the composite decreased with decreasing fiber length from 60 to 5 mm, curvature change during heating and cooling cycles between room temperature and 813 K were clearly observed. In order to increase strength of the composite, continuously reinforced layer and discontinuously reinforced one were bonded together. Tensile strength of this type became higher than the others and its curvature could also reproducibly change during the heating cycles due to the difference of fiber length. Curvature change of this type existed between the continuous fiber type and the discontinuous fiber type composites. In the case of SiC/Ni composite, , its curvature increased with increasing temperature up to higher than 1200K.
2002-09-13