Scholarlink

<p>This study systematically investigates the corrosion resistance mechanism of PbMgSnAl alloys as positive grid materials for lead-acid batteries. By adding 0.01 to 0.15 wt pct Mg concentrations, the electrochemical behavior, microstructure evolution, and corrosion layer formation mechanism were compared with commercial PbCaSnAl alloy. Electrochemical tests revealed that Mg incorporation increases oxygen evolution overpotential (8 mV for 0.10 wt pct Mg), reducing water loss but accelerates corrosion rates (0.467 mg h<sup>−1</sup> cm<sup>−2</sup> for PbMg<sub>0.10</sub>SnAl). Microstructural characterization showed that Mg was able to induce grain refinement (29.0 <i>μ</i>m for 0.15 wt pct Mg) as well as a reduction in tensile strength (from 62.61 to 59.15 MPa). Crucially, MgSO<sub>4</sub> failed to promote PbSO<sub>4</sub> nucleation and instead formed a porous corrosion layer, which promoted further corrosion of the alloy. In conclusion, the systematic study of magnesium in mechanical properties as well as corrosion resistance provides key insights into the design of durable grid alloys.</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

Corrosion Resistance of Mg to PbSnAl-based Alloys in Sulfuric Acid Solutions

  • 期刊论文

  • 发表日期：

    2026年5月18日

查看全文
  • Fangzhao Pang,
  • Yongxin Wu,
  • Junmin Peng,
  • Hongya Wang,
  • Bingbing Wang,
  • Xin Qu,
  • Yuhua Xiao,
  • Xiaowei Liu,
  • Xiang Chen,
  • Weiguo Huang,
  • Dihua Wang,
  • Huayi Yin

摘要

This study systematically investigates the corrosion resistance mechanism of PbMgSnAl alloys as positive grid materials for lead-acid batteries. By adding 0.01 to 0.15 wt pct Mg concentrations, the electrochemical behavior, microstructure evolution, and corrosion layer formation mechanism were compared with commercial PbCaSnAl alloy. Electrochemical tests revealed that Mg incorporation increases oxygen evolution overpotential (8 mV for 0.10 wt pct Mg), reducing water loss but accelerates corrosion rates (0.467 mg h−1 cm−2 for PbMg0.10SnAl). Microstructural characterization showed that Mg was able to induce grain refinement (29.0 μm for 0.15 wt pct Mg) as well as a reduction in tensile strength (from 62.61 to 59.15 MPa). Crucially, MgSO4 failed to promote PbSO4 nucleation and instead formed a porous corrosion layer, which promoted further corrosion of the alloy. In conclusion, the systematic study of magnesium in mechanical properties as well as corrosion resistance provides key insights into the design of durable grid alloys.