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尼克尔涂层的耐腐蚀分析,通过对不同层和波形组合的电子沉积来进行
Liang Yan1, Tao Zhang2, Huajin Zhang2
1School of Electromechanical and Vehicle Engineering, Zhengzhou University of Technology, Zhengzhou 450044, China.
Materials (Basel, Switzerland)
|January 11, 2025
概括
电子沉积涂层显示出改善的耐腐蚀性,具有优化的脉冲制参数和波形. 具有凸凸梯度电流的多层涂层进一步增强了这种阻力.
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
- 表面工程是什么?表面工程是什么?
背景情况:
- 涂层对于各种工业应用中的防腐蚀保护至关重要.
- 与直流方法相比,脉冲电沉积提供了对涂层性能的增强控制.
- 优化脉冲参数和波形是实现卓越涂层性能的关键.
研究的目的:
- 为了研究脉冲电沉积参数对单层涂层特性的影响.
- 为了比较使用不同的脉冲电流波形沉积的涂层的耐腐蚀性.
- 使用梯度电流技术开发和评估具有增强耐腐蚀性的多层涂层.
主要方法:
- 单层涂层使用矩形,三角形,上坡三角形和下坡三角形脉冲波形进行电沉积.
- 不同的脉冲周期 (T),工作周期 (θ) 和平均电流密度 (iav).
- 使用动态极化曲线和表面形态分析评估的耐腐蚀性.
主要成果:
- 单层涂层在较短的脉冲周期,较长的工作周期和更高的平均电流密度下表现出良好的耐腐蚀性.
- 斜坡下降三角形 (Rdn) 波形涂层在优化条件下表现出与其他波形相比的耐腐蚀性 (T = 10 ms, θ = 0.5, iav = 10-40 mA/cm2).
- 用凸梯度电流沉积的多层涂层显示出显著增强的耐腐蚀性.
结论:
- 优化的脉冲电位参数和特定波形 (如Rdn) 产生具有良好的耐腐蚀性涂层.
- 梯度电流策略,特别是凸梯度,对于开发具有优越腐蚀保护的先进多层涂层是有效的.
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