COMPARATIVE ANALYSIS OF HYBRID COMPOSITES BASED ON A356 AND ZA-27 ALLOYS REGARDING THEIR TRIBOLOGICAL BEHAVIOUR

The comparative analysis of the two hybrid composites, obtained by compocasting process, based on A356 and ZA-27 alloys reinforced with 10 wt. % SiC 0, 1 3 graphite (Gr) is presented. Optimisation their tribological behaviour was performed Taguchi method artificial neural network (ANN). Tribological tests were a block-on-disk tribometer, at three sliding speeds, normal loads distance 600 m, without lubrication. Results ANOVA showed that composites alloy have better wear resistance composite Gr has lowest rate. coefficient friction for SiC, load N speed m/s.