| 1 | Enhanced localized and uniform corrosion resistances of bulk nanocrystalline 304 stainless steel in high-concentration hydrochloric acid solutions at room temperature显示文摘The localized and uniform corrosion resistances of bulk nanocrystalline 304 stainless steel(NC-304 SS)produced by severe rolling technique, and its conventional polycrystalline 304 stainless steel(CC-304 SS)counterpart, were investigated in high-concentration hydrochloric acid solutions at room temperature.NC-304 SS can scarcely suffer from localized corrosion in 4 mol/L and 5 mol/L HCl solutions during 5-day immersion tests, and in 1-3 mol/L HCl solutions during thirty-five-day immersion tests. The corrosion rate of NC-304 SS was also less than that of CC-304 SS during these immersion tests. The improved localized and uniform corrosion resistances of NC-304 SS were explained in terms of the adsorption and chemical activity of Cl^-on NC-304 SS and CC-304 SS characterized by X-ray photoelectron spectroscopy,and the valence electron configurations of NC-304 SS and CC-304 SS were characterized by ultra-violet photoelectron spectroscopy rather than conventional electrochemical results. | S.G.Wang M.Sun Y.H.Xu K.Long Z.D.Zhang | 2018 | Journal of Materials Science & Technology2018，34，12： | 4 |
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