电解液中Ce对ZAlSi12Cu2Mg1微弧氧化层的影响  

Effects of Ce Concentration in Electrolyte on Micro-arc Oxidation Coating on ZAlSi12Cu2Mg1 Alloy

作　　者：王晓军[1,2] 刘向东[2] 杜月和[3] 

机构地区：[1]内蒙古北方重工业集团有限公司特殊钢厂 [2]内蒙古工业大学材料科学与工程学院 [3]中国人民解放军驻447厂军代室

出　　处：《特种铸造及有色合金》2009年第1期79-81,共3页Special Casting & Nonferrous Alloys

基　　金：内蒙古自然科学基金资助项目(20040202)

摘　　要：在稳定的Na2SiO3电解液体系中对ZAlSi12Cu2Mg1进行微弧氧化,研究了电解液中稀土Ce的质量浓度对电解液电导率、微弧氧化过程中正/负向电流及微弧氧化层特性的影响。研究结果表明,随着Ce的质量浓度从0到0.125g/L逐渐增加,电解液的电导率从15.15MS/m逐渐上升到16.54MS/m,微弧氧化过程中的电流发生明显改变;随着Ce的质量浓度的提高,微弧氧化层厚度和显微硬度先增大随后逐渐减小,在Ce质量浓度为0.025g/L时达到最大,其氧化层厚度约为258μm;显微硬度(HV)约为620。Micro-arc oxidation coating was prepared by micro-arc oxidation methods on ZAlSi12Cu2Mg1 alloy in Na2SiO3 electrolytes. Effects of Ce concentration in the electrolyte on electrical conductivity, positive/negative current during micro-arc oxidation process and coating properties were investigated. The results reveal that with increasing Ce concentration from 0 to 0.125g/L in the electrolytes, electrical conductivity of the electrolytes is increased from 15.15 MS/cm to 16.54 MS/cm, meanwhile, current in micro-arc oxidation process is obviously varied also. With increasing in Ce concentration in the electrolytes, coating thickness and micro-hardness are firstly increased then gradually decreased, in which the coating thickness of approximately 258μm and coating micro-hardness of HV620 can be obtained with 0.025g/L Ce concentration.

关 键 词：微弧氧化层 稀土Ce ZALSI12CU2MG1 微弧氧化 

分 类 号：TG174.4[金属学及工艺—金属表面处理]