铜合金在NaCl溶液中的腐蚀性能
Zhiqiang Song1,2, Ojiyed Tegus1,2
1Institute for the History of Science and Technology, Inner Mongolia Normal University, 81 Zhaowuda Road, Hohhot 010022, China.
Materials (Basel, Switzerland)
|July 29, 2023
概括
离子加速青铜的腐蚀. 该研究发现,α相很容易腐蚀,而铜合金中的delta相在NaCl溶液中表现出强烈的抗性.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 腐蚀科学 腐蚀科学
背景情况:
- 离子具有高度反应性,并对铜合金腐蚀产生重大影响.
- 了解青铜腐蚀对于保护文化遗产文物至关重要.
研究的目的:
- 为了研究Cu-20重%Sn铜合金在NaCl溶液中的腐蚀行为.
- 为了评估这些合金中的α和δ相的耐腐蚀性.
主要方法:
- 用于相位分析的X射线衍射 (XRD).
- 扫描电子显微镜 (SEM) 用于表面形态.
- 电化学试验以确定腐蚀动力学.
主要成果:
- 腐蚀电流密度随着化物度的增加 (1.1 × 10−7 到 2.7 × 10−6 A/cm2).
- 30天后,矩阵腐蚀深度达到50微米.
- α阶段表现出对腐蚀的敏感性,而 δ阶段表现出增强的耐腐蚀性.
结论:
- 与化物环境中的α相相相比,Cu-20重%Sn青铜中的δ相具有更高的耐腐蚀性.
- 这些发现为保存和分析古代青铜文物提供了宝贵的数据.
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