内燃机活塞大多是用铝硅合金通过高机械性能和高抗腐蚀性能与低密度的有效结合而制成的。然而,柴油机的活塞,其合金的机械性不足以满足摩擦副接触面(其中之一是活塞环槽和压缩环之间的摩擦副接触面)的作业要求。这个问题因当前所制造的柴油机的功率趋于不断加大而更加严重。 Internal combustion engine pistons are mostly made of aluminum-silicon alloys with high mechanical and high corrosion resistance combined with low density. However, the piston of the diesel engine, its alloy is not mechanically enough to meet the operating requirements of the contact surfaces of the friction pair, one of which is the friction pair interface between the piston ring groove and the compression ring. This problem is exacerbated by the growing power of diesel engines currently being manufactured.