含铁量低于1％（质量分数，下同）的Zn—Fe合金具有优异的耐腐蚀性能，有必要对其耐蚀性及机理做深入研究。采用动电位极化技术和交流阻抗方法（EIS）研究了未钝化的纯Zn镀层和碱性Zn．Fe合金镀层（含幸失0．15％～0．89％）在0．2mol／L Na2B4O7-H38O3，含0．05mol／L Cl-的0．2mol／L Na2B4O7-H3BO3和1％NaCl溶液中的耐蚀性能，采用XRD法研究了不同镀层的晶体结构。结果表明：少量铁在锌中的存在明显影响锌的耐蚀性能，含铁0．15％～0．60％的Zn—Fe合金镀层腐蚀电阻和反应电阻都较纯zn层的大，腐蚀电流密度较小，在一定电位范围内形成的电化学钝化膜耐Cl-点蚀的能力强；含铁量为0．29％的合金表现出了最好的耐蚀性；Zn-Fe合金镀层与碱性纯zn镀层的晶体结构相同，都是六方密排结构，铁在Zn-Fe合金中不是以独立相而是以固溶相的形式存在。
参考文献
| [1] | J. B. Bajat;V. B. Miskovic-Stankovic;M. D. Maksimovic;D. M. Drazic;S. Zec .Electrochemical deposition and characterization of Zn-Co alloys and corrosion protection by electrodeposited epoxy coating on Zn-Co alloy[J].Electrochimica Acta,2002(25):4101-4112. |
| [2] | Y. Liao;D. R. Gabe;G. D. Wilcox .Microstructural morphology of Zn-Fe alloy electrodeposited coatings[J].Plating & Surface Finishing,1998(8):62-66. |
| [3] | F. Rosalbino;E. Angelini;D. Maccio;A. Saccone;S. Delfino .Application of EIS to assess the effect of rare earths small addition on the corrosion behaviour of Zn-5%Al (Galfan) alloy in neutral aerated sodium chloride solution[J].Electrochimica Acta,2009(4):1204-1209. |
| [4] | 屠振密 .电镀锌与锌合金的特性应用与发展[J].材料保护,2000,33(01):37-41. |
| [5] | 曾祥德.一种多功能锌铁合金电镀溶液的应用[J].材料保护,2003(08):70-71. |
| [6] | 齐翔,吴波,王健玲.电镀锌铁合金工艺的应用[J].材料保护,2001(06):43-44. |
| [7] | 王云燕,彭文杰,柴立元,舒余德.碱性锌酸盐电镀Zn-Fe合金工艺的研究[J].电镀与环保,2003(02):11-14. |
| [8] | Z.Zhang;W.H.Leng;H.B.Shao;J.M.Wang .Study on the behavior of Zn-Fe alloy electroplating[J].Journal of Electroanalytical Chemistry: An International Journal Devoted to All Aspects of Electrode Kinetics, Interfacial Structure, Properties of Electrolytes, Colloid and Biological Electrochemistry,2001(1/2):127-130. |
| [9] | 李华为;刘云丽;车承焕 .电镀铁系锌基合金的现状分析[J].电镀与环保,1998,18(03):16-18. |
| [10] | Barbosa LL;Carlos IA .Development of a novel alkaline zinc-iron plating bath containing sorbitol and the chemical, physical and morphological characterization of the Zn-Fe films[J].Surface & Coatings Technology,2006(3/4):1695-1703. |
| [11] | 肖鑫;黄先威;卢耀枢 .光亮氯化物电镀锌铁合金电镀工艺研究[J].腐蚀与防护,2004,25(05):205-214. |
| [12] | Loar G W;Romer K R;Aoe T J .Zinc-alloy electrodepos- its for improved corrosion protection[J].Plat Surf Fin- ish,1991,78(03):74-79. |
| [13] | 朱力群 .zn-Fe合金镀层的耐蚀性研究[J].表面技术,1992,21(01):19-24. |
| [14] | 李峰,王建良.碱性锌铁合金电镀[J].材料保护,2000(04):10-11. |
| [15] | 崔萍,左正忠.低铁锌铁合金电镀新工艺[J].广州化工,2008(02):46-47. |
| [16] | Zhu Li Qun .Electrodeposition of zinc-iron alloy from an Alkaline zincate bath[J].Metal finishing,1998(11):54-57. |
| [17] | 崔萍,左正忠,上官文龙,詹益腾.碱性溶液中电镀含低铁量的锌铁合金的研究[J].材料保护,2008(09):31-33,51. |
| [18] | Su X P;Tang N Y;Toguri J M .Thermodynamic evalua- tion of the Zn- Fe system[J].Journal of Alloys and Compounds,2001,325(1/2):129-136. |
| [19] | Qu Q;Li L;Bai W et al.Effects of NaCl and NH4 Cl on the initial atmospheric corrosion of zinc[J].Corrosion Science,2005,47(11):2832-2840. |
| [20] | Boshkov N. .Galvanic Zn-Mn alloys - electrodeposition, phase composition, corrosion behaviour and protective ability[J].Surface & Coatings Technology,2003(2/3):217-226. |
| [21] | C eary M;Breslin C B .The influence of dichromate and cerium passivation treatments on the dissolution of Sn / Zn coatings[J].Corrosion Science,1997,39(08):1341-1350. |
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