Wear behaviour of Al/(Al{sub}2O{sub}(3P) + SiC{sub}p) hybrid composites

摘要

In this study, dry sliding metal-metal and metal-abrasive wear behaviours of the aluminium matrix hybrid composites produced by pressure infiltration technique were investigated. These composites were reinforced with 37 vol% Al{sub}2O{sub}3 and 25 vol% SiC particles and contained up to 8 wt% Mg in their matrixes. While matrix hardness and compression strength increased, amount of porosity and impact toughness decreased with increasing Mg content of the matrix. Metal-metal and metal-abrasive wear tests revealed that wear resistance of the composites increased with increasing Mg addition. On the other hand, abrasive resistance decreased with increasing test temperature, especially above 200℃.