Leszczyńska-Madej Beata, Madej Marcin, Garbiec Dariusz
Faculty of Non-Ferrous Metals, AGH University of Science and Technology, Mickiewicza 30 Ave., 30-059 Krakow, Poland.
Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Mickiewicza 30 Ave., 30-059 Krakow, Poland.
Materials (Basel). 2020 Nov 4;13(21):4969. doi: 10.3390/ma13214969.
The paper presents the results of research on the tribological properties of spark-plasma-sintered Al-SiC composites. Composites with contents of 50 and 70 wt.% SiC were prepared. The sintering process was carried out using an HP D 25/3 spark plasma sintering furnace under vacuum, at the sintering temperature of 600 °C and compaction pressures of 50 and 80 MPa, respectively. The heating rate was 100 °C/min and the holding time was 10 min. Composites with a density of 91-100% were obtained. The tribological properties of the composites were evaluated based on weight loss and the coefficient of friction using a block-on-ring tribotester. Along with the weight percentage of SiC and compaction pressure, the sliding distance, and load during the tribological test were considered. Both the weight percentage of SiC and compaction pressure affected the tribological behavior of Al-SiC composites. It was found that the wear resistance was higher when a lower compaction pressure and a smaller amount of reinforcing phase (50 wt.%) were used.
本文介绍了放电等离子烧结Al-SiC复合材料摩擦学性能的研究结果。制备了SiC含量为50 wt.%和70 wt.%的复合材料。烧结过程在真空条件下，使用HP D 25/3放电等离子烧结炉进行，烧结温度为600℃，压实压力分别为50 MPa和80 MPa。加热速率为100℃/min，保温时间为10 min。获得了密度为91%-100%的复合材料。使用销-盘摩擦磨损试验机，基于重量损失和摩擦系数对复合材料的摩擦学性能进行了评估。摩擦学测试过程中，除了考虑SiC的重量百分比和压实压力外，还考虑了滑动距离和载荷。SiC的重量百分比和压实压力均影响Al-SiC复合材料的摩擦学行为。研究发现，当使用较低的压实压力和较少量的增强相（50 wt.%）时，耐磨性更高。
