Scholarlink

<p>In this study, TiVCrNb pre-alloys were initially fabricated through arc melting, followed by the preparation of TiVCrNb (label as Mg0) alloys, Mg<sub>10</sub>(TiVCrNb)<sub>90</sub> (label as Mg10) and Mg<sub>20</sub>(TiVCrNb)<sub>80</sub> (label as Mg20) coatings using the reactive high-energy ball milling method. The resulting alloy coatings were then characterized for their microstructure, hydrogen storage capacity and corrosion resistance using scanning electron microscopy, x-ray diffraction (XRD), energy-dispersive spectroscopy and electrochemical workstation techniques. The results showed that the coatings exhibited a dense microstructure with uniform Mg distribution. The addition of Mg enhanced the crystallinity and maintained long-range ordering during ball milling. Hydrogen absorption capacity improved as Mg content increased, ranging from 1.05 to 1.62&#xa0;H/M. At 25 °C, the samples exhibited rapid hydrogen reabsorption kinetics, with hydrogen capacity rising from 0.98 to 1.49&#xa0;H/M as Mg content increased. As Mg content increased, the plateau pressures stabilized without significant tilting. Concurrently, the corrosion current density and double layer capacitance first decreased from 2.45 × 10<sup>−6</sup> to 1.84 × 10<sup>−6</sup>&#xa0;A/cm<sup>2</sup> and then increased to 2.13 × 10<sup>−6</sup>&#xa0;A/cm<sup>2</sup> and first decreased from 10.13 to 7.11&#xa0;μF/cm<sup>2</sup> and then increased to 9.25&#xa0;μF/cm<sup>2</sup>, respectively. In contrast, the corrosion potential of the samples increased from − 0.621 to − 0.373&#xa0;V, and then decreased to − 0.387&#xa0;V. The capacitance arc radius was most pronounced for Mg10 in all tests, indicating improved corrosion resistance, further confirming that the addition of Mg improved its corrosion resistance.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Preparation, Corrosion Property and Hydrogen Storage of Mg20(TiVCrNb)80 Alloy Coatings

  • 期刊论文

  • 发表日期：

    2025年4月16日

查看全文
  • Haifang Ren,
  • Gang Li,
  • Quanqing Zhang,
  • Pengyuan Qi,
  • Jing Bai,
  • Fudong Wang

摘要

In this study, TiVCrNb pre-alloys were initially fabricated through arc melting, followed by the preparation of TiVCrNb (label as Mg0) alloys, Mg10(TiVCrNb)90 (label as Mg10) and Mg20(TiVCrNb)80 (label as Mg20) coatings using the reactive high-energy ball milling method. The resulting alloy coatings were then characterized for their microstructure, hydrogen storage capacity and corrosion resistance using scanning electron microscopy, x-ray diffraction (XRD), energy-dispersive spectroscopy and electrochemical workstation techniques. The results showed that the coatings exhibited a dense microstructure with uniform Mg distribution. The addition of Mg enhanced the crystallinity and maintained long-range ordering during ball milling. Hydrogen absorption capacity improved as Mg content increased, ranging from 1.05 to 1.62 H/M. At 25 °C, the samples exhibited rapid hydrogen reabsorption kinetics, with hydrogen capacity rising from 0.98 to 1.49 H/M as Mg content increased. As Mg content increased, the plateau pressures stabilized without significant tilting. Concurrently, the corrosion current density and double layer capacitance first decreased from 2.45 × 10−6 to 1.84 × 10−6 A/cm2 and then increased to 2.13 × 10−6 A/cm2 and first decreased from 10.13 to 7.11 μF/cm2 and then increased to 9.25 μF/cm2, respectively. In contrast, the corrosion potential of the samples increased from − 0.621 to − 0.373 V, and then decreased to − 0.387 V. The capacitance arc radius was most pronounced for Mg10 in all tests, indicating improved corrosion resistance, further confirming that the addition of Mg improved its corrosion resistance.