通过表面活性剂,提高了钢表面的酸-酸盐转换涂层的耐腐蚀性
B A Abd-El-Nabey1, S El-Housseiny2,3, M A Abd-El-Fatah4
1Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt.
Scientific reports
|September 22, 2023
概括
将Triton-X-100和Tween-80表面活性剂添加到酸转换涂层 (PPC) 浴中,可以改善钢材质量.
科学领域:
- 材料科学 材料科学 材料科学
- 腐蚀科学 腐蚀科学
- 表面化学 表面化学
背景情况:
- 应用 permanganate-phosphate转化涂层 (PPC) 来增强金属的保护.
- 表面活性剂可以改变涂层的性能和性能.
- 了解表面活性剂的影响对于优化转化涂料至关重要.
研究的目的:
- 调查Triton-X-100和Tween-80对PPC特征的影响.
- 评估这些表面活性剂对钢铁耐腐蚀性的影响.
- 阐明表面活性剂在PPC中的作用机制.
主要方法:
- 用不同的表面活性剂度在钢上制备PPC.
- 使用扫描电子显微镜 (SEM) 进行微结构分析.
- 通过能量分散式X射线光谱 (EDX) 和X射线光电子光谱 (XPS) 进行化学成分分析.
- 使用电化学阻抗光谱 (EIS) 和潜在动力极化进行电化学评估.
主要成果:
- 表面活性剂的添加减少了涂层的孔隙性,增加了紧性.
- 0.01 M Triton-X-100和0.01 M Tween-80的保护效率分别提高到93.7%和84.1%.
- 表面活性剂主要通过对钢表面的吸附而起作用,作为阳极抑制剂.
- XPS和EDX证实了更好的涂层质量和表面活性剂的结合.
结论:
- 特里顿-X-100和Tween-80显著提高了PPC的性能.
- 表面活性剂通过修改微观结构和抑制阳极反应来提高耐腐蚀性.
- 提出了一种涉及表面活性剂吸附和与涂层过程相互作用的机制.
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