在偏铝酸盐一六偏磷酸盐体系中对镁合金进行微弧氧化处理,研究了金属盐缓蚀剂钨酸盐、多元醇或酸等添加剂对氧化膜性能的影响.通过正交实验优化和对微弧氧化膜结构,成分及性能的测试评价,得到了性能较好的微弧氧化电解液配方.SEM检测发现,复合添加剂(NaaEDTAlg/L,CH3(CH2)11SO3Na0.5g/L)通过抑制破坏性的微弧,能促进成膜、降低起弧电压,得到结构更加均匀和完整的陶瓷涂层;XRD检测表明,膜层的主要成分是MgO、Mg3(PO4)2,MgAl2O4和AlPO4等化合物;中性盐水腐蚀测试表明,陶瓷膜在48 h内具有较平缓的腐蚀速度;EIS和动电位极化曲线表明,在电解液中加入复合添加剂使镁合金试样微弧氧化膜的耐腐蚀性能得到了很大的提高.
参考文献
| [1] | J.E.Gray,B.Luan,Protective coatings on magnesium and its alloys-a critical review,Journal of Alloys and Compounds,336(1-2),88(2002) |
| [2] | YANG Lihui,LI Junqing,JIANG Weiwei,ZHANG Milin,Current status of the surface treatment for magnesium alloy,Journal of Chinese Society for Corrosion and Protection,28(5),316(2008)(杨黎晖,李峻青,姜巍巍,张密林,镁合金表面处理技术的研究进展,中国腐蚀与防护学报,28(5),316(2008)) |
| [3] | A.V.Apelfeld,O.V.Bespalova,A.M.Borisov,O.N.Dunkin,N.G.Goryaga,V.S.Kulikauskas,E.A.Romanovsky,S.V.Semenov,I.V.Souminov,Application of the particle backscattering methods for the study of new oxide protective coatings at the surface of Al and Mg alloys,Nuclear Instruments and Methods in Physics Research Section B:Beam Interactions with Materials and Atoms,161-183,553(2000) |
| [4] | LU Weiling,CHEN Tijun,MA Ying,XU Weijun,WANG Wei,HAO Yuan,Invariable small current density process of micro-arc oxidation of magnesium alloy AZ91D,The Chinese Journal of Nonferrous Metals,18(9),1590(2008)(吕维玲,陈体军,马颖,徐卫军,王伟,郝远,AZglD镁合金恒定小电流密度微弧氧化工艺,中国有色金属学报,18(9),1590(2008)) |
| [5] | X.W.Guo,W.J.Ding,C.Lu,C.Q.Zhal,Influence of ultrasonic power on the structure and composition of anodizing coatings formed on Mg alloys,Surface and Coatings Technology,183(2--3),359(2004) |
| [6] | ZHI Qing,GAO Jin,DONG Chaofang,LI XIAOgang,Corrosion behavior of microarc-oxidation film on AZ91D magnesium alloy,Acta Metallurgica Sinica,44(8),986(2008)(郅青,高瑾,董朝芳,李晓刚,AZ91D镁合金微弧氧化膜的腐蚀行为研究,金属学报,44(8),986(2008)) |
| [7] | Fei Chen,Hal Zhou,Bin Yao,Zhen Qin,Qingfeng Zhang,Corrosion resistance property of the ceramic coating obtained through microarc oxidation on the AZ31 magnesium alloy surfaces,Surface and Coatings Technology,201(9-11),4905(2007) |
| [8] | Anselm Kuhn,Plasma anodizing of magnesium alloys,Metal Finishing,I01(9),44(2003) |
| [9] | CHEN Xianming,LUO Chengping,LIU Jiangwen,LI Wenfang,Thermodynamic and kinetic analysis of microarc oxidation on magnesium alloy,Ordnance Material Science and Engineering,29(3),17(2006)(陈显明,罗承萍,刘江文,李文芳,镁合金微弧氧化热力学和动力学分析,兵器材料科学与工程,29(3),17(2006)) |
| [10] | Jun Liang,Baogang Guo,Jun Tian,Huiwen Liu,Jinfang Zhou,Weimin Liu,Tao Xu,Effects of NaA102 on structure and corrosion resistance of mlcroarc oxidation coatings formed on AM60B magnesium alloy in phcephate-KOH electrolyte,Surface and Coatings Technology,199(2-3),121(2005) |
| [11] | WU Zhendong,JIANG Zhaohua,YAO Zhongping,ZHANG Xuelin,Influence of treatment time on structure and property of ceramic coatings formed on LY12 aluminum alloy by micro-arc oxidation,Journal of Inorganic Materials,22(3),555(2007)(吴振东,姜兆华,姚忠平,张雪林,反应时间对LY12铝合金微弧氧化膜层组织及性能的影响,无机材料学报,22(3),555(2007)) |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%