在Na2SiO3和NaOH溶液中,研究了封闭处理对AZ91D 镁合金磷酸钡转化膜的影响,采用扫描电镜(SEM)和X射线衍射谱(XRD)研究了封闭前后磷酸钡转化膜的表面形貌及其相组成,采用全浸蚀试验和电化学方法检测了膜层的抗腐蚀性能.结果表明,封闭后的磷酸盐转化膜更加平整、致密.与封闭前的转化膜相比,封闭后的转化膜新增了C、Si元素和一些晶态物质,如SiO2、BaSi4O9、Na2SiO3和MgF2.封闭处理可以明显提高镁合金磷酸钡转化膜的抗腐蚀性能.
参考文献
| [1] | Zhong, C.;He, M.F.;Liu, L.;Chen, Y.J.;Shen, B.;Wu, Y.T.;Deng, Y.D.;Hu, W.B. .Formation of an aluminum-alloyed coating on AZ91D magnesium alloy in molten salts at lower temperature[J].Surface & Coatings Technology,2010(7):2412-2418. |
| [2] | 丁文江,吴玉娟,彭立明,曾小勤,林栋樑,陈彬.高性能镁合金研究及应用的新进展[J].中国材料进展,2010(08):37-45. |
| [3] | 姚孝寒,曾效舒,戚道华.镁合金（ZM5）/碳纳米管复合材料力学性能研究[J].南昌大学学报（工科版）,2006(02):126-129. |
| [4] | 曾荣昌,兰自栋,陈君,莫鲜花,韩恩厚.镁合金表面化学转化膜的研究进展[J].中国有色金属学报,2009(03):397-404. |
| [5] | SHI Z M;SONG G L;ATRENS A .The corrosion performance of anodized magnesium alloys[J].Corrosion Science,2006,48(11):3531-3546. |
| [6] | 吴纯素.化学转化膜[M].北京:化学工业出版社,1988:1-5. |
| [7] | David Hawke;D. L. Albright .A Phosphate-Permanganate Conversion Coating for Magnesium[J].Metal finishing,1995(10):34,36-38-0. |
| [8] | Kouisni L;Azzi M;Dalard F;Maximovitch S .Phosphate coatings on magnesium alloy AM60 Part 2: Electrochemical behaviour in borate buffer solution[J].Surface & Coatings Technology,2005(2/3):239-246. |
| [9] | LIU Feng,SHAN Da-yong,HAN En-hou,LIU Chang-sheng.Barium phosphate conversion coating on die-cast AZ91D magnesium alloy[J].中国有色金属学会会刊(英文版),2008(z1):344-348. |
| [10] | ZHAO M;ZHU L;HE G P .Characterization and corrosion studies of amorphous/nanocrystalline conversion coatings formed by applying static magnetic field on AZ91D magnesium alloy[J].Current Advances in Materials and Processes,2011,189/193:805-809. |
| [11] | Wanqiu Zhou;Dayong Shan;En-Hou Han;Wei Ke .Structure and formation mechanism of phosphate conversion coating on die-cast AZ91D magnesium alloy[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,2008(2):329-337. |
| [12] | Niu LY;Jiang ZH;Li GY;Gu CD;Lian JS .A study and application of zinc phosphate coating on AZ91D magnesium alloy[J].Surface & Coatings Technology,2006(9):3021-3026. |
| [13] | HAGANS P L;HAAS C M.Chromate conversion coatings[A].Materials Park:ASM International,1994:405-411. |
| [14] | 李鑫庆;陈迪勤;余静琴.化学转化膜技术与应用[M].北京:机械工业出版社,2005:193. |
| [15] | 周婉秋 .镁合金磷酸盐化学转化膜及其耐蚀性研究[D].中国科学院金属研究所,2004. |
| [16] | JIN H L;YANG X J;PENG W Y et al.Effects of magnetic fields on the phosphate conversion coating of AZ91D magnesium alloy[J].Journal of Physics:Condensed Matter,2010,200(08):082010. |
| [17] | 宋光铃.镁合金腐蚀与防护[M].北京:化学工业出版社,2006 |
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