Colouring of the austenitic stainless steel alloy (20.45% Cr, 8.57% Ni) was carried out in NaNO3-KNO3 eutectic melt without and with additions of Na2O2, NaCl and their mixtures at different temperatures ranging from 400-600℃, under open-circuit and galvanostatic anodic polarization conditions. The produced colours greatly depend on the thickness of oxide films, which in turn depends on the composition of the molten bath and its temperature. The more attractive, bright, adherent and uniform coloured oxide films can be obtained at 400, 450 and 500℃ in molten nitrate bath containing NaCl and Na2O2 mixtures. The pitting corrosion susceptibility of the coloured oxide films was tested in FeCl3 and NaCl as corrosive media. The obtained results indicate that the pitting corrosion susceptibility of the coloured oxide films greatly depends on the previous operating conditions of the colouring process of the stainless steel specimens such as the composition of molten bath, temperature and technique of colouring process.
参考文献
| [1] | G.Bianchi;A.Cerquetti;F.Mazza;S.Torchio .[J].Corrosion Science,1972,12:495. |
| [2] | J R Kearns.[A].New Orleans,LA,USA,1984:50. |
| [3] | P.K.Rastogi;B.K.Shah;A.K.Sinha;P.G.Kulkarni .[J].British Corrosion Journal,1994,29:78. |
| [4] | T.E.Evans;A.C.Hart;A.N.Sledgell .[J].Transactions of the Institute of Metal Finishing,1973,51:108. |
| [5] | T.E Evans .[J].Corrosion Science,1977,17:105. |
| [6] | R.O.Ansel;T.Dickinson;A.F.Povey .[J].Corrosion Science,1978,18:245. |
| [7] | R.C.Furneaux;G.E.Thompson;G.C.Wood .[J].Corrosion Science,1981,21:23. |
| [8] | Y.Shigeo;O.Naoto;S.Kazno;T.Takeshi U.Takaoki .[J].Nisshin Seik Giho,1988,58:94. |
| [9] | 钱家权,周玉福.不锈钢着色中存在“绿外区”[J].材料保护,1991(11):9. |
| [10] | K.Ogura;M.Tsujigo;K.Sakurai;J.Yno .[J].Journal of the Electrochemical Society,1993,140(05):1311. |
| [11] | J.H.Wang;J.G.Duh .[J].Surface and Coatings Technology,1995,73(1-2):46. |
| [12] | S.Yutaka;N.Tokiko;S.Hiceo .[J].Kozangabubu Kenkyu Hokoku (Akita Dalgoku),1991,12:27. |
| [13] | S.Yoshiyuki;F.Keisi;N.Tokiko;M.Motoi S.Yutaka .[J].Kozangakubu Kenkya Hokoku (Akita Diagoku),1992,13:37. |
| [14] | A.Baraka;R.M.S.Baraka;A.Abdel-Razik .[J].Surface Technology,1985,26:199. |
| [15] | S.A.Salih;A.N.AL.Masri;A.M.Baraka .[J].Journal of Materials Science,2001,36:2547. |
| [16] | H. A. Abdel-Hakim;A. A. Attia;A. M. Baraka .Dissolution Susceptibility of the Oxide Species Formed on Mild Steel During Its Oxidation in Molten NaNO_3-KNO_3 Eutectic Mixture[J].Journal of Materials Engineering and Performance,2002(3):301-305. |
| [17] | H.A.Abdel-Hakim;S.A.Abdel Gawad;A.N.Al-Masri;A.M.Baraka .[J].Mat Wiss U Werkstofftech,1997,28:1. |
| [18] | S. A. Salih;A. A. Attia;A. N. El-Masri .The effect of sodium peroxide on the corrosion behavior of some stainless steel alloys in a carbonate melt[J].Anti-Corrosion Methods and Materials,2002(3):181-193. |
| [19] | R.W.Reeve;A.Tseung .[J].Journal of Electroanalytical Chemistry,1996,403:69. |
| [20] | A.J.Appleby;S.Nicholson .[J].Journal of Electroanalytical Chemistry,1980,112:71. |
| [21] | M.Azzi;J.J.Rameau .[J].Corrosion Science,1984,24:935. |
| [22] | H.A.Abdel-Hakim Ali;A.A.Attia;A.N.Al-Masri;A.M.Baraka .[J].Anti-Corrosion Methods and Materials,2001,48(02):99. |
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