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首页> 外文期刊>Materiali in Tehnologije >COMPARISON OF THE CORROSION BEHAVIOUR OF AUSTENITIC STAINLESS STEEL IN SEAWATER AND IN A 3.5 % NaCl SOLUTION
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COMPARISON OF THE CORROSION BEHAVIOUR OF AUSTENITIC STAINLESS STEEL IN SEAWATER AND IN A 3.5 % NaCl SOLUTION

机译:奥氏体不锈钢在海水和3.5%NaCl溶液中的腐蚀行为比较

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摘要

The evolution of the passive films on austenitic AISI 316L stainless steel in seawater and in pure 3.5 % NaCl was studied using potentiodynamic (PD) measurements, X-ray photoelectron spectroscopy (XPS) and electrochemical impedance spectroscopy (EIS). This paper describes and evaluates the comparison of pure 3.5 % NaCl with seawater through surface and corrosion measurements. The formation of the passive film was studied by EIS at the open-circuit potential (OCP), by potentiodynamic measurements and by X-ray photoelectron spectroscopy, where their compositions were analysed as a function of depth, and the cationic fraction of the passive film was determined. The passive films on both materials predominantly contained Cr-oxides, whereas the Fe species were markedly depleted.
机译:使用电位动力学(PD)测量,X射线光电子能谱(XPS)和电化学阻抗谱(EIS)研究了在海水和纯3.5%NaCl中奥氏体AISI 316L不锈钢上钝化膜的演变。本文通过表面和腐蚀测量来描述和评估纯3.5%NaCl与海水的比较。通过EIS在开路电势(OCP)下,通过电势测量和通过X射线光电子能谱研究了钝化膜的形成,其中分析了其组成随深度的变化以及钝化膜的阳离子分数被确定。两种材料上的钝化膜都主要含有Cr氧化物,而Fe则明显贫化。

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