Friction behavior of Al-Cu-Fe-B polycrystalline quasicrystals

来源期刊：中国有色金属学报(英文版)2004年第3期

论文作者：周细应 李培耀 罗军明 钱士强 童建华

文章页码：464 - 469

Key words：polycrystalline quasicrystal; dry sliding; temperature; crack

Abstract: Dry sliding friction between the polycrystalline Al₅₉Cu_25.5Fe_12.5B₃ quasicrystals(QCs) and coating of the diamond-like carbon(DLC) was carried out by self-made tribometer under different conditions. The influences of four parameters(temperature, sliding velocity, applied load, atmosphere) on friction of quasicrystal surface were studied. Microstructure of quasicrystal, morphology of worn surface, and wear debris were observed by scanning electron microscope (SEM).The results show that for QCs, the friction coefficient and the roughness of worn surface is influenced by the parameters,especially greatly by the temperature. With increasing the applied load and sliding velocity, the friction coefficient decreases. The dominant wear mechanism at 350℃is delamination for QCs. The cracks forms on the worn surface during friction. Moreover, phase transformation is not observed on worn surface of QCs at 350℃.