碳钢防腐漆系统在南极海洋环境中的性能
Rosa Vera1, Margarita Bagnara1, Rodrigo Henríquez1
1Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Av. Universidad 330, Placilla (Curauma), Valparaíso 2373223, Chile.
Materials (Basel, Switzerland)
|August 26, 2023
概括
这项研究评估了南极洲45个月的海洋涂料系统. 在极端环境下,烯酸-烯酸聚氨顶层表现出在抗腐蚀和老化方面具有卓越的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 腐蚀工程 腐蚀工程
- 环境科学 环境科学
背景情况:
- 南极海洋环境由于恶劣的条件,对保护性涂层提出了极端的挑战.
- 了解涂料系统的耐用性对于极地地区的资产保护至关重要.
研究的目的:
- 评估三种涂料系统的长期性能,这些涂料系统被暴露在南极海洋环境中45个月.
- 为了比较涂层碳钢与未涂层钢的行为,具有已知的腐蚀率.
- 为极端环境条件确定最有效的涂料系统.
主要方法:
- 涂层和未涂层的碳钢样品被暴露了45个月.
- 监测了包括太阳辐射和污染物度 (Cl-, SO2) 在内的环境参数.
- 涂层样本使用视觉检查,扫描电子显微镜 (SEM),埃文斯X切割带测试,减弱总反射率里叶变换红外 (ATR-FTIR) 谱学和电化学阻抗谱学 (EIS) 进行分析.
- 确定了未涂层钢的腐蚀率.
主要成果:
- 无涂层碳钢的腐蚀率为85.64微米/年,相当于C5环境腐蚀性类别.
- 这三种涂料系统都表现出良好的粘附性和抗分层性,没有观察到表面生.
- 衰老的影响包括亮度下降,磨损指数增加和反射率下降.
- 电化学阻抗光谱 (EIS) 证实了所有涂层方案的良好保护能力.
- 烯酸-阿利法特聚氨顶层系统显示了最好的整体性能.
结论:
- 在45个月的时间里,在极端的南极海洋环境中,涂料系统通常表现良好.
- 烯酸-阿利法特聚氨顶层在恶劣的极地条件下提供卓越的保护和耐用性.
- 这项研究提供了关于涂料系统在以前未经评估的极端环境中的长期疗效的宝贵数据.
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