| 摘要 |
PURPOSE:To improve the mechanical characteristics, heat and wear resistances of the titled composite material by producing a proper amt. of a ZrAl3 layer on the interface between Al (alloy) as a matrix and ZrO2 powder as a reinforcing material added to the matrix. CONSTITUTION:Al (alloy) powder is mixed with 2-50vol% fine ZrO2 powder and the mixture is hermetically sealed in a capsule and compacted by powder metallurgical processing with a hot isostatic press or by other process. At this time, compacting conditions such as temp. and time are properly controlled so as to regulate the amt. of fine ZrO2 powder reacted, that is, the amt. of ZrAl3 produced to >=10% of the fine ZrO2 powder mixed. The resulting composite material has superior heat and wear resistances, high strength and a high modulus of elasticity, so it is suitable for use as a piston material for an automobile or a vane material for a compressor.
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