张成,李壮壮,杨陆铭,李阳阳,巴志新,王涛

• 1:南京工程学院材料工程学院
• 2:江苏省先进结构材料与应用技术重点实验室

摘要(Abstract)：

首先在Al~(3+)/Sn~(4+)前处理液中在GZ91K镁合金表面制得前驱体膜,随后在Na_2CO_3后处理液中将前驱体膜转化为镁铝锡类水滑石膜。利用扫描电镜(SEM)和X射线衍射(XRD)分析膜层的表面形貌和成分,利用极化曲线、交流阻抗和浸泡析氢实验评价该转化膜的耐蚀性。结果表明:前后处理时间对前驱体膜及镁铝锡类水滑石膜的生长产生重要影响;当前处理时间为1 h,后处理时间为24 h时,制备的水滑石膜连续、致密,此时的腐蚀电流密度(8.2×10~(-7)A·cm~(-2))约为基体(119.5×10~(-7)A·cm~(-2))的1/14,提高了镁合金基体的耐蚀性。

关键词(KeyWords)： 镁合金;三元水滑石;转化膜;耐蚀性

Abstract:

Keywords:

基金项目(Foundation): 南京工程学院大学生科技创新基金(TB201702016,TB201802059,TP20180010,TB201816008)

作者(Author): 张成,李壮壮,杨陆铭,李阳阳,巴志新,王涛

DOI: 10.13289/j.issn.1009-6264.2018-0163

参考文献(References)：

• [1]Zeng R C,Zhang J,Huang W J,et al.Review of studies on corrosion of magnesium alloys[J].The Chinese Journal of Nonferrous Metals,2006,16(s1):763-771.
• [2]Kim W C,Kim J G,Lee J Y,et al.Influence of Ca on the corrosion properties of magnesium for biomaterials[J].Materials Letters,2008,62(25):4146-4148.
• [3]Cai J,Cao F,Chang L,et al.The preparation and corrosion behaviors of MAO coating on AZ91D with rare earth conversion precursor film[J].Applied Surface Science,2011,257(8):3804-3811.
• [4]陈君,张勤勇,宋影伟,等.水滑石类化合物及其在腐蚀防护应用中的研究进展[J].西华大学学报(自然科学版),2014,33(5):64-69.CHEN Jun,ZHANG Qin-yong,SONG Ying-wei,et al.Research progress of hydrotalcite-like compounds and their application in corrosion protection[J].Journal of Xihua University Natural Science Edition,2014,33(5):64-69.
• [5]Javierre E,García S J,Mol J M C,et al.Tailoring the release of encapsulated corrosion inhibitors from damaged coatings:Controlled release kinetics by overlapping diffusion fronts[J].Progress in Organic Coatings,2012,75(1/2):20-27.
• [6]Lin J K,Hsia C L,Uan J Y.Characterization of Mg,Al-hydrotalcite conversion film on Mg alloy and Cl-and CO32-math container loading mathjax,anion-exchangeability of the film in a corrosive environment[J].Scripta Materialia,2007,56(11):927-930.
• [7]Lin J K,Uan J Y.Formation of Mg,Al-hydrotalcite conversion coating on Mg alloy in aqueous HCO3-/CO32-and corresponding protection against corrosion by the coating[J].Corrosion science,2009,51(5):1181-1188.
• [8]Chen J,Song Y,Shan D,et al.In situ growth of Mg-Al hydrotalcite conversion film on AZ31 magnesium alloy[J].Corrosion Science,2011,53(10):3281-3288.
• [9]Chen J,Song Y,Shan D,et al.Study of the in situ growth mechanism of Mg-Al hydrotalcite conversion film on AZ31 magnesium alloy[J].Corrosion Science,2012,63(5):148-158.
• [10]Chen J,Song Y,Shan D,et al.Study of the corrosion mechanism of the in situ grown Mg-Al-CO32-,hydrotalcite film on AZ31 alloy[J].Corrosion Science,2012,65(12):268-277.
• [11]Chen J,Song Y,Shan D,et al.In situ growth of Mg-Al hydrotalcite conversion film on AZ31 magnesium alloy[J].Corrosion Science,2011,53(10):3281-3288.
• [12]Zhang F,Liu Z G,Zeng R C,et al.Corrosion resistance of Mg-Al-LDH coating on magnesium alloy AZ31[J].Surface and Coatings Technology,2014,258:1152-1158.
• [13]Lin J K,Uan J Y,Wu C P,et al.Direct growth of oriented Mg-Fe layered double hydroxide(LDH)on pure Mg substrates and in vitro corrosion and cell adhesion testing of LDH-coated Mg samples[J].Journal of Materials Chemistry,2011,21(13):5011-5020.
• [14]姚萍,倪哲明,胥倩,等.镁锡水滑石中的超分子作用[J].物理化学学报,2010,26(1):175-182.YAO Ping,NI Zhe-ming,XU Qian,et al.Supermolecular interactions in magnesium-tin layered double hydroxides[J].Acta Physico-Chimico Sinica,2010,26(1):175-182.
• [15]Kasahara S.Synthesis of new Sn incorporated layered double hydroxides and their evolution to mixed oxides[J].Materials Research Bulletin,1999,34(10/11):1707-1717.
• [16]巴志新,王章忠,董强胜,等.超声辅助镁合金镁铝水滑石膜制备及性能[J].材料热处理学报,2014,35(7):48-52.BA Zhi-xin,WANG Zhang-zhong,DONG Qiang-sheng,et al.Preparation and properties of Mg,Al-hydrotalcite conversion film on magnesium alloy by ultrasonic assisted process[J].Transactions of Materials and Heat Treatment,2014,35(7):48-52.
• [17]巴志新,章晓波,李壮壮,等.超声波对镁合金镁铝水滑石膜耐蚀性的影响[J].功能材料,2015(20):20092-20096.BA Zhi-xin,ZHANG Xiao-bo,LI Zhuang-zhuang,et al.The influence of ultrasonic wave on the corrosion resistance of Mg,Alhydrotalcite conversion film on magnesium alloy[J].Journal of Functional Materials,2015(20):20092-20096.
• [18]Cao C N,Zhang J Q.Introduction of Electrochemical Impedance Spectroscopy[M].Beijing:Science Press,2002.

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