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Corrosion Behavior of Cr-Mn-Ni Stainless Steel in Acetic Acid Solution

机译:Cr-Mn-Ni不锈钢在乙酸溶液中的腐蚀行为

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摘要

Corrosion behavior of a Cr-Mn-Ni stainless steel designated as J204 (DIN 1.4376) was evaluated in acetic acid (CH^sub 3^COOH) solutions by electrochemical methods and boiling immersion tests. Resistance to stress corrosion cracking (SCC) was evaluated using U-bend and slow strain rate tests (SSRT). The influence of acid concentrations, temperature, and chloride ions on the corrosion resistance of the alloy was investigated. J204 stainless steel was found comparable with AISI 304 (UNS S30400) stainless steel in a wide range of CH^sub 3^COOH solutions. The chemistry of the passive film formed in 98% (glacial) CH^sub 3^COOH environment was evaluated using x-ray photoelectron spectroscopy (XPS). This analysis revealed enrichment of Cr ions on the surface in the form of chromium oxide, irrespective of Ni content in the stainless steel. [PUBLICATION ABSTRACT]
机译:通过电化学方法和沸腾浸渍试验,评估了在J(sub 3 ^ COOH)溶液中的J204(DIN 1.4376)Cr-Mn-Ni不锈钢的腐蚀行为。使用U型弯曲和慢应变速率测试(SSRT)评估了抗应力腐蚀开裂(SCC)的能力。研究了酸浓度,温度和氯离子对合金耐蚀性的影响。发现J204不锈钢在广泛的CH 3次3 COOH溶液中可与AISI 304(UNS S30400)不锈钢媲美。使用X射线光电子能谱(XPS)评估了在98%(冰)CH 3 sub CO 3环境中形成的钝化膜的化学性质。该分析表明,与不锈钢中的Ni含量无关,Cr离子以氧化铬的形式富集在表面。 [出版物摘要]

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  • 来源
    《Corrosion》 |2010年第8期|p.1-9|共9页
  • 作者

    V Shankar Rao L K Singhal;

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    V. Shankar Rao[double dagger], * and L.K. Singhai*Submitted for publication March 12, 2008, in revised form, February 1, 2010.[double dagger] Corresponding author. E-mail: vshankarao@yahoo.co.in.* JSL Ltd.. Ralinga Nagar, Industrial Complex, Jajpur 755 028, India.,;

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