Износ И Коэффициент Трения Супермодифицированного Заэвтектического Сплава Алюминия С Кремнием

Abstract

Friction coefficient and wear of hypereutectic alloy of aluminum with 15wt.% silicon with supermodified eutectic structure without primary silicon crystals were studied. Such hypereutectic alloy with eutectic structure was obtained by directional solidification with the rate 1mm/s. It has higher strength and plasticity, higher resistance to wear and lower friction coefficient than hypereutectic alloy of aluminum with 20 wt.% silicon. After modification by strontium its tribological properties are superior to those of hypereutectic commercial alloy.