Abstract：The tinplate was a kind of cold-rolled thin steel sheet. Both sides were plated with a very thin layer of metallic tin. The hardness and strength of steel as well as corrosion resistance and bright appearance of tin were integrated. The passive film, pure tin layer and alloy layer on tinplate were stripped off layer by layer using electrochemical method.The electrochemical property was studied by means of electrochemical techniques such as polarization curves and alternating-current impedance. The surface morphology of each layer was observed by scanning electron microscope (SEM). The chemical valence of chromium in passive film of tinplate was analyzed by X-ray photoelectron spectroscopy (XPS). The results showed that the electrochemical stripping results were very good. The surface morphology of each layer could be well observed. Moreover, the corrosion resistance property of tinplate could be also investigated. After removing pure tin layer, the corrosion current density increased from 3.5 μA/cm2 to 18 μA/cm2. Good corrosion resistance property of tinplate was due to the pure tin layer and passive film. The chromium in passive film of tinplate mainly existed in form of chromium hydroxide, metallic chromium and chromium sesquioxide.
曹曙,周焕勤,胡维健.电镀锡钢板生产工艺技术及其新发展[J].上海金属,1994,16(2):1-6.CAO Shu,ZHOU Huan-qin,HU Wei-jian.Process and technology and progress of electrolytic tinplate production[J].Shanghai Metals,1994,16(2):1-6.
[3]
黄久贵,李宁,蒋丽敏,等.镀锡板耐蚀性研究及进展[J].电镀与环保,2003,23(6):5.HUANG Jiu-gui,LI Ning,JIANG Li-min,et al.Research and progress in the corrosion resistance of tinplate and its progress[J].Electroplating & Pollution Control,2003,23(6):5.
[4]
Zhao Y,Zhang Z,Dang H.Preparation of tin nanoparticales by solution dispersion[J].Material Science and Engineering. 2003,359(1-2): 405-407.
[5]
Horiguchi M,Kurokawa W,Matsubayashi H.Influence of microstructure of passivtion of tinplate on prevention of tin oxide growth[J].Iron&Steel,1996(8):1142-1145.
[6]
Blunden S,Wallace T.Tin in canned food: a review and understanding of occurrence and effect[J].Food and Chemical Toxicology,2003,41:1651-1662.
[7]
Arenas M A,Conde A,Damborenea J J.Cerium: a suitable green corrosion inhibitor for tinplate[J].Corrosion Science,2002,44(3):511-520.
[8]
Biermann M C,Sandenbergh R F, Moltke T V S V.Characteristics and lacquer adhesion on dip and CDCchromium passivated tinplate[J].Corrosion Science,2006,48:2925-2936.
[9]
ISO 16962-2005 Surface chemical analysis determination of zinc and/or aluminum based metallic coatings by glow discharge optical emission spectrometry[S].
[10]
徐永林.镀锡板镀层的辉光放电光谱法解析[J].冶金分析,2015,35(3):7-12.XU Yong-lin.Analysis of tinplate layer by glow discharge spectrometry[J].Metallurgical Analysis,2015,35(3):7-12.
李岩,郜兵,董秀文,等.罐装食品用电镀锡板的耐蚀性及其试验方法[J].材料保护,2002(9):436-439.LI Yan,GAO Bing,DONG Xiu-wen,et al.Corrosion resistance of electrolytic tin plate used for food cans and its testing methods[J].Materials Protection,2002(9):436-439.
[13]
陈圣,薛菲,刘俊亮,等.镀锡板表面分析实验样品的前处理方法分析[J].冶金分析,2012,32(4):23-27.CHEN Sheng,XUE Fei,LIU Jun-liang,et al.Pretreatment of tinplate sample for surface analysis[J].Metallurgical Analysis,2012,32(4):23-27.
[14]
Zhang X,Van den Bos C,Sloof W G,et al.Comparison of the morphology and corrosion performance of Cr and Cr-based conversion coat ings on zinc[J].Surface & Coatings,2004(5):1-13 .
[15]
Simon P,Bui N,Dabosi F,et al.X-ray photoelectron spectroscopy study of passive layers f ormed on lead-tin alloys[J].Journal of Power Sources,1994,52:31-39.
[16]
Moulder J M.Handbook of X-ray photoelect ron spectroscopy[M].Bost on:Physical Elect Ronics,1995:213-242.
[17]
孙杰,安成强,于晓中,等.不同表面状态镀锡钢板铬酸盐钝化膜中铬元素的XPS分析[J].光谱学与光谱分析,2009,29(2):544-547.SUN Jie,AN Cheng-qiang,YU Xiao-zhong,et al.XPS analysis of chromium element in chromate passivation film formed on tinplate in different surface state[J].Spectroscopy and Spectral Analysis,2009,29(2):544-547.
