硫酸对涂料性能的影响
Marek Baraniak1, Grzegorz Lota1,2, Jarosław Wojciechowski1
1Institute of Chemistry and Technical Electrochemistry, Faculty of Chemical Technology, Poznan University of Technology, ul. Berdychowo 4, 60-965 Poznan, Poland.
Materials (Basel, Switzerland)
|June 10, 2023
概括
二乙烯二胺四乙酸二硫酸VI) ([H2EDTA2+][HSO4-]2) 添加剂提高了瓦特式浴中涂层的耐腐蚀性. 这种新添加剂显示了提高电性能的潜力.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 表面工程是什么?表面工程是什么?
背景情况:
- 瓦特式浴是电的标准.
- 添加剂对于修改涂层特性至关重要.
- 寻求新的添加剂来提高涂层性能和耐腐蚀性.
研究的目的:
- 评估二乙烯二胺四乙酸二 ((硫酸)) ([H2EDTA2+][HSO4-]2) 作为瓦特型电浴中的新增添加剂的有效性.
- 研究这种添加剂对涂料物理化学和电化学性能的影响.
- 为了比较使用新添加剂和不使用新添加剂生产的涂层的性能.
主要方法:
- 尼克尔涂层从瓦特式浴中用各种添加剂进行电沉积,包括[H2EDTA2+][HSO4-]2和糖.
- 分析了诸如形态和湿度 (接触角度) 等物理化学性质.
- 使用电化学技术评估了电化学性质,特别是耐腐蚀性 (Icorr).
主要成果:
- 在含有[H2EDTA2+][HSO4-]2和糖的浴中,核化速度最慢.
- 仅用[H2EDTA2+][HSO4-]2沉积的涂层表现出与没有添加剂的浴室相似的形态.
- 所有经过测试的涂层都具有水友性 (接触角度为68-77°).
- 与基础浴 (Icorr = 9.02 μA/cm2) 相比,含糖和[H2EDTA2+][HSO4-]2混合物浴的涂层显示出明显改善的耐腐蚀性 (Icorr低至0.88 μA/cm2).
结论:
- 二乙烯二胺四乙酸二硫酸VI) ([H2EDTA2+][HSO4-]2) 显示出作为瓦特型浴的添加剂的希望.
- 添加剂,特别是与糖相结合,可以增强涂料的耐腐蚀性.
- 对优化添加剂度的进一步研究可能会导致更优的电解决方案.
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