研究了电流密度分别为8、10 A/dm2时,其他条件相同的情况下,微弧氧化处理对7075铝合金拉伸性能的影响。结果表明:两种电流密度下,随陶瓷层厚度的增加,铝合金试样的伸长率均为先增大后减小;当陶瓷层厚度为45μm时伸长率最大。试样的抗拉强度均为随氧化时间的延长而增大,并且两种试样抗拉强度值相当。 The effects of micro-arc oxidation on the tensile properties of 7075 aluminum alloy were studied under the conditions of 8,10 A / dm2, respectively. The results show that with the increase of the thickness of the ceramic layer, the elongation of the aluminum alloy sample first increases and then decreases with the increase of the thickness of the ceramic layer at both current densities. When the ceramic layer thickness is 45 μm, the elongation is the highest. The tensile strength of the samples increases with the extension of the oxidation time, and the tensile strength of the two samples is equivalent.