首页> 外文期刊>ISIJ international >Effect of Additional Element on Hydrogen Absorption for Iron in Acidic and Neutral Sulfate Solutions
【24h】

Effect of Additional Element on Hydrogen Absorption for Iron in Acidic and Neutral Sulfate Solutions

机译:附加元素对酸性和中性硫酸盐溶液中铁吸收氢的影响

获取原文
获取原文并翻译 | 示例
       

摘要

Effects of additional elements of Cr and Ni in iron on hydrogen absorption behavior have been investigated by means of conventional electrochemical hydrogen permeation test. Empirical transient curve of hydrogen permeation current density was agreed with theoretical one on the basis of Fick's second law with a fixed hydrogen concentration at the hydrogen absorption surface, C_0, at any time. The fact suggests quasi-equilibrium condition to the absorption-desorption reaction of hydrogen at the surface, and that correlation between C_0 and hydrogen absorption rate. As an analytical result of the transient, a diffusion coefficient decreased with an increase in a content of additional elements, and the decrement was enhanced much more by Cr than by Ni. C_0 was almost proportional to a square root of the cathodic current density at the hydrogen absorption surface for any specimens. The slope increased with an increase in a content of the additional elements, and the increment was enhanced much more by Cr than by Ni. There was a correlation between the slope and the diffusion coefficient, and the correlation suggested that the additional elements of Cr and Ni attract hydrogen. In addition, the attraction effect of Cr was much more than that of Ni. Under anodic potential region, the effect of additional element on C_0 was not clearly obtained in the solution of pH 2, but it is found that C_0 of the Cr-added steel was larger and that of the Ni-added steel was smaller than that of Fe in the solution of pH 6.
机译:通过常规的电化学氢渗透试验研究了铁中铬和镍的其他元素对氢吸收行为的影响。氢渗透电流密度的经验瞬态曲线与理论值一致,这是基于菲克第二定律的,该定律可以随时在氢吸收表面C_0处固定氢浓度。事实表明表面氢吸收-解吸反应的准平衡条件,以及C_0和氢吸收速率之间的相关性。作为瞬态的分析结果,扩散系数随着附加元素含量的增加而降低,并且Cr的减少量比Ni的增加量更多。对于任何样品,C_0几乎与氢吸收表面上阴极电流密度的平方根成正比。斜率随附加元素含量的增加而增加,Cr的增加幅度远大于Ni的增加幅度。斜率与扩散系数之间存在相关性,该相关性表明Cr和Ni的其他元素会吸引氢。另外,Cr的吸引作用远大于Ni的吸引作用。在阳极电位区域内,在pH 2的溶液中并没有清楚地获得附加元素对C_0的影响,但发现添加Cr的钢的C_0大于添加Ni的钢的C_0。 pH为6的溶液中的铁

著录项

  • 来源
    《ISIJ international》 |2016年第3期|378-384|共7页
  • 作者单位

    Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamatecho, Suita, Osaka, 564-8680 Japan;

    Undergraduate Student in Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamatecho, Suita, Osaka 564-8680 Japan;

    Undergraduate Student in Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamatecho, Suita, Osaka 564-8680 Japan;

    Graduate Student in Graduate School of Science and Engineering, Kansai University, 3-3-35 Yamatecho, Suita, Osaka, 564-8680 Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    hydrogen embrittlement; iron; additional element; hydrogen absorption rate; diffusion coefficient of hydrogen; hydrogen permeation test;

    机译:氢脆铁;附加元素氢吸收率氢扩散系数氢渗透测试;
  • 入库时间 2022-08-17 23:58:31

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号