(西安理工大學 材料科學與工程學院，西安 710048)
摘 要: 針對鋁、鎂合金微弧氧化技術應用開發(fā)中存在的溶質元素作用機理不明、電量消耗與陶瓷層增厚關系機制不清、所得陶瓷層性能尚不能滿足苛刻環(huán)境下的耐蝕性要求等應用瓶頸，結合已有的試驗結果，分析了微弧氧化陶瓷層形成和增厚過程中溶質元素的作用機制，探討了通過溶液體系增加沉積層阻抗和依據(jù)等通量變換原理增大峰值電流兩條途徑縮短起弧時間以降低電量消耗的可能方法，提出了利用陶瓷層表面均布盲性微孔的形貌特征，制備有機−無機復合涂層的研究思想，以期為鋁、鎂合金微弧氧化處理的技術進步起到促進作用。
關鍵字: 鋁、鎂合金；微弧氧化；微弧電泳；復合涂層
（School of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048, China）
Abstract:The development of and application of micro-arc oxidation (MAO) technology of aluminum and magnesium alloy were severely restricted by unknown mechanism of function of solute elements, unclear relationship between power consumption and ceramic coating thickness and undesirable resistance of the coating to harsh corrosive environment. The solute elements during MAO coating formation and growth was analyzed based on the previous experimental data. A possible way to lower power consumption by shortening arcing time was proposed and discussed, which can be carried out by increasing the deposited layer impedance using optimum electrolyte systems and promoting the peak current based on an isoflux transformation principle. An organic-inorganic duplex layers design was proposed to fabricate organic layer on the top blind micropores surface of MAO coating, with the purpose of promoting the coating performances and improving the MAO technical advance of Al and Mg alloys.
Key words: aluminum and magnesium alloy; micro-arc oxidation; micro-arc electrophoresis; duplex coatings
