Song Zhiqiang, Tegus Ojiyed
Institute for the History of Science and Technology, Inner Mongolia Normal University, 81 Zhaowuda Road, Hohhot 010022, China.
College of Physics and Electronic Information, Inner Mongolia Normal University, 81 Zhaowuda Road, Hohhot 010022, China.
Materials (Basel). 2023 Jul 21;16(14):5144. doi: 10.3390/ma16145144.
Chloride ions play an important role in the corrosion of bronze through their active reactivity to copper alloys. The corrosion behavior of bronze alloys in NaCl solution was investigated by using X-ray diffraction (XRD), a scanning electron microscope (SEM), and electrochemical tests, with a special emphasis on the corrosion resistance of the α and δ phases in Cu-20 wt%Sn bronze alloys. The experimental results show that the corrosion current density of Cu-20 wt%Sn bronze alloys increases from 1.1 × 10 A/cm to 2.7 × 10 A/cm with the increase in the chloride ion concentration from 10 mol/L to 1 mol/L. After a soaking duration of 30 days, the matrix corrosion depth reaches 50 μm. The α phase of the alloys is easily corroded in NaCl solution, while the δ phase with high Sn content has strong corrosion resistance. This study provides relevant data for the analysis and protection of ancient bronze alloys.
氯离子通过对铜合金的活性反应在青铜腐蚀中起重要作用。利用X射线衍射（XRD）、扫描电子显微镜（SEM）和电化学测试研究了青铜合金在NaCl溶液中的腐蚀行为，特别强调了Cu-20 wt%Sn青铜合金中α相和δ相的耐腐蚀性。实验结果表明，随着氯离子浓度从10 mol/L增加到1 mol/L，Cu-20 wt%Sn青铜合金的腐蚀电流密度从1.1×10 A/cm增加到2.7×10 A/cm。浸泡30天后，基体腐蚀深度达到50μm。合金的α相在NaCl溶液中容易被腐蚀，而高锡含量的δ相具有很强的耐腐蚀性。该研究为古代青铜合金的分析和保护提供了相关数据。
