The mechanical properties, microstructures of as-cast Pb-Sb-Re alloy and of traditional Pb-Sb alloy were studied. The anodic corrosion layers formed at 0.9 V for 4 h in 4.5 mol·L -1 sulfuric acid solution were in...The mechanical properties, microstructures of as-cast Pb-Sb-Re alloy and of traditional Pb-Sb alloy were studied. The anodic corrosion layers formed at 0.9 V for 4 h in 4.5 mol·L -1 sulfuric acid solution were investigated using A.C impedance. The results show that the strength of Pb-Sb-Re alloy is slightly decreased, while the tenacity is increasing rapidly, which is helpful for the later manufacture of grid alloy material, and the anodic corrosion layer of Pb-Sb-Re alloy has better conductivity than that of traditional Pb-Sb alloy. It is shown that cerium can inhibit the development of Pb(Ⅱ) compound in anodic corrosion scale, and this can compensate for the effect of premature capacity loss for the low Sb content. In addition, cerium promotes the corrosion-resistant behavior of Pb-Sb alloy with low Sb content.展开更多
文摘The mechanical properties, microstructures of as-cast Pb-Sb-Re alloy and of traditional Pb-Sb alloy were studied. The anodic corrosion layers formed at 0.9 V for 4 h in 4.5 mol·L -1 sulfuric acid solution were investigated using A.C impedance. The results show that the strength of Pb-Sb-Re alloy is slightly decreased, while the tenacity is increasing rapidly, which is helpful for the later manufacture of grid alloy material, and the anodic corrosion layer of Pb-Sb-Re alloy has better conductivity than that of traditional Pb-Sb alloy. It is shown that cerium can inhibit the development of Pb(Ⅱ) compound in anodic corrosion scale, and this can compensate for the effect of premature capacity loss for the low Sb content. In addition, cerium promotes the corrosion-resistant behavior of Pb-Sb alloy with low Sb content.
