522 低圧含浸法を用いたAl2O3/Al複合材料の摩擦及び磨耗特性(金属/金属基複合材料)

概要

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Low-pressure infiltration technique is useful for the preparation of high performance composites with large size and complex shape. In this study, the porous preform was fabricated from Al_2O_3 short fiber with 3μm in diameter. AC8A molten aluminum alloy was attempted to infiltrate perform of the various volume fractions. Al_2O_3 fiber preform with 10%, 15 and 20% in volume fraction (vol%) had good infiltration. For Al_2O_3 fiber preform, infiltration succeed until 20 vol% alumina fiber preform fabricated by using complex binder with SiO_2 sol and Al_2O_3 sol. Then, it was investigated the wear behavior of Al_2O_3 reinforced AC8A composites containing different volume fraction of 10-20%. The friction coefficients confirm that the abrasion resistances of Al_2O_3 reinforced AC8A composite are superior to those of the AC8A specimens, and that the composites are also superior in terms of wear loss.
一般社団法人日本機械学会の論文
2009-11-06