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首页> 外文期刊>Applied Surface Science >Composition-controlled active-passive transition and corrosion behavior of Fe-Cr(Mo)-Zr-B bulk amorphous steels
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Composition-controlled active-passive transition and corrosion behavior of Fe-Cr(Mo)-Zr-B bulk amorphous steels

机译：Fe-Cr（Mo）-Zr-B大块非晶钢的成分控制主动-被动转变和腐蚀行为

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摘要

Various corrosive environments in daily life and industry have put forward high requirement on corrosion resistance of metals, especially steels. Unlike the strict demand in Cr content of crystalline stainless steels, amorphous steels (ASs) with lower Cr content can be endowed with outstanding corrosion resistance, while the intrinsic mechanism is not fully understood. Herein, we present a novel Fe-92 (x) (y) zCrxMoyZr8Bz (6 = x = 40, 0 = y = 22, and 12 = z = 18) bulk amorphous steel (BAS) forming system and reveal the synergistic effect of Cr and Mo in determining the chemical stability of oxide films. It has been found the Fe-92 (x) zCrxZr8Bz BASs with 1 mm in diameter display a Cr-controlling active-passive transition at the Cr threshold of similar to 25% in 1 M hydrochloric acid. When adding minor Mo into the BASs, the Cr threshold can be remarkably reduced by forming favorable hexavalent Mo oxides. The generation of Mo6+ is facilitated by atomic selective dissolution at the interface and can promote the passivation. In contrast, when the Cr content of the Mo-doped glasses exceeds 25%, few Mo6+ oxides would produce as the prior formation of protective passive films inhibits the further oxidation of Mo. Therefore, manipulating the active-passive transition properly is crucial to designing ASs with high stainlessness. (C) 2018 Elsevier B.V. All rights reserved.
机译：日常生活和工业中的各种腐蚀环境对金属特别是钢的耐腐蚀性提出了很高的要求。与对结晶不锈钢的Cr含量的严格要求不同，具有较低Cr含量的非晶钢（ASs）可以具有出色的耐腐蚀性，而其内在机理尚未得到充分了解。在这里，我们提出了一种新颖的Fe-92（x）（y）zCrxMoyZr8Bz（6 <= x <= 40，0 <= y <= 22，和12 <= z <= 18）大块非晶钢（BAS）成形系统揭示了铬和钼在确定氧化膜化学稳定性方面的协同作用。已经发现，直径为1 mm的Fe-92（x）zCrxZr8Bz BAS在1 M盐酸中的Cr阈值下显示出Cr控制的主动-被动转变，类似于25％。当在BAS中添加微量Mo时，可以通过形成有利的六价Mo氧化物显着降低Cr阈值。 Mo6 +的生成通过界面处的原子选择性溶解而得以促进，并且可以促进钝化。相反，当掺杂钼的玻璃中的Cr含量超过25％时，由于先前形成的保护性钝化膜会抑制Mo的进一步氧化，因此几乎不会产生Mo6 +氧化物。因此，正确地控制有源-钝化过渡对设计至关重要具有高度不锈钢的AS。 （C）2018 Elsevier B.V.保留所有权利。

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  • 来源
    《Applied Surface Science》 |2018年第1期|496-504|共9页
  • 作者

    Si Jiajia; Wu Yidong; Wang Tan; Liu Yanhui; Hui Xidong;

  • 作者单位

    Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China;

    Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China;

    Zhengzhou Univ, Sch Mat Sci & Engn, Zhengzhou 450001, Henan, Peoples R China;

    Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China;

    Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Amorphous steel; Chromium; Corrosion resistance; Passive film; Acid solution;

    机译：非晶钢;铬;耐蚀性;钝化膜;酸溶液;

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