【摘要】 研究了不同电流密度对ZA43微弧氧化膜层的表面形貌、膜厚、硬度以及膜的组成相的影响等问题。结果表明:随着电流密度的增大,膜层表面的孔洞尺寸变大;氧化膜厚度逐渐增大,但是增加的速度变得缓慢;膜层硬度在一定电流密度范围内增加,最终趋于稳定;膜层主要相成分为α-Al2O3和γ-Al2O3,增加了ZA43高铝锌基合金的表面硬度,耐磨性和耐腐蚀性能。更多还原

【Abstract】 The effect of current density on surface morphology,thickness,hardness and phase composition of ZA43 micro-arc oxidation film are investigated.The results show that the size of micropore increases with the increase of current density;the thickness of the oxidation film increases with the decrease of the rate;the hardness of film increases in a certain range of current density and tends to stably;the primary composition of coating is a great deal of α-Al2O3 and γ-Al2O3 which increase the surface hardness,wear resistance and corrosion resistance of ZA43.更多还原