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氧化时间对MB8镁合金微弧氧化膜的影响
引用本文:赵晴,胡勇,杜楠.氧化时间对MB8镁合金微弧氧化膜的影响[J].航空材料学报,2007,27(6):55-58.
作者姓名:赵晴  胡勇  杜楠
作者单位:南昌航空大学,材料学院,南昌,330063
摘    要:研究氧化时间对MB8镁合金氧化膜致密度、厚度和耐蚀性的影响,分析不同氧化时间膜层表面微观形貌、成分和结构的变化.结果表明,随微弧氧化时间的延长,氧化膜变厚变粗糙,氧化时间为10min时,膜层腐蚀速率最低.微弧氧化初期膜层主要由立方结构的MgO构成,随氧化时间的延长,斜方晶体结构的Mg2(SiO4)和单斜晶体结构的Mg(PO3)2在膜层中的含量逐渐增加.

关 键 词:镁合金  微弧氧化  耐蚀性  氧化时间  氧化时间  镁合金  微弧氧化膜  影响  Magnesium  Alloy  Coating  Oxidation  Time  含量  单斜  晶体结构  构成  立方结构  腐蚀速率  延长  结果  变化  成分  表面微观形貌  膜层
文章编号:1005-5053(2007)06-0055-04
修稿时间:2007年2月12日

Effects of Oxidation Time on Micro-Arc Oxidation Coating of MB8 Magnesium Alloy
ZHAO Qing,HU Yong,DU Nan.Effects of Oxidation Time on Micro-Arc Oxidation Coating of MB8 Magnesium Alloy[J].Journal of Aeronautical Materials,2007,27(6):55-58.
Authors:ZHAO Qing  HU Yong  DU Nan
Abstract:The effects of oxidation time on the density,thickness and corrosion resistance of the micro-arc oxidation coatings of MB8 magnesium alloy were investigated.The changes of the micro-topography,component and structure of the coatings with different oxidizing periods were analyzed.The results show that the coating thickness increases with the prolonged oxidation time,but the coating surface gets rough.The corrosion rate of the coating is lowest when the appropriate oxidation time is 10min.Initially the content of the micro-arc oxidation coating is mainly composed of cubic structure MgO,with the oxidation time prolonged,both Mg2(SiO4) with orthorhombic crystal structure and Mg(PO3)2 with monoclinic crystal structure increase gradually in the coating.
Keywords:magnesium alloy  micro-arc oxidation  corrosion resistance  oxidation time
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