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Abstract:The friction and wear properties of Cu-Mn-Al alloy were investigated against 304 stainless steel ball and alumina ball in H2SO4, NaCl and NaOH solutions . The results show that when 304 stainless steel ball is used as the pair, in H2SO4 solution, the wear failure form is severe adhesive wear, which leads to high friction coefficient. In NaCl solution, the brittle spalling of the surface material induced by chlorine embrittlement was observed. In NaOH solution,the dissolution and oxidation reaction of the alloy were occured, the wear mechanism is corrosion+ abrasive wear , which produced smooth worn surface and low friction coefficient. When alumina ball is used as the pair, the adhesion between mating pairs is prevented because of the poor solubility between alumina and alloy, as a result, the shear stress decreases, the brittle spalling is restrained, and the friction coefficient and wear rate of the alloy in H2SO4 and NaCl solutions are significantly reduced; however, in NaOH solution, the matching materials have little effect on the wear properties of the alloy.
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