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在精选的基于的合金上使用耐腐蚀ZrO₂屏障膜

Irina Stambolova¹, Daniela Stoyanova¹, Maria Shipochka¹

¹Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, "Acad. G. Bonchev" St. Bl. 11, 1113 Sofia, Bulgaria.

Materials (Basel, Switzerland)

|December 23, 2023

概括

新开发的复合涂层与一层齐尔科尼亚顶层显著提高低碳钢的耐腐蚀性. 与- (ZN) 和标准涂层相比,- (ZC) 系统提供了更好的保护.

科学领域:

材料科学材料科学材料科学
腐蚀工程腐蚀工程
表面化学表面化学

背景情况:

低碳钢需要有效的防腐蚀保护,以保持耐用性.
复合涂料提供了多层防护,防止环境退化.
合金和陶顶层对增强的抗腐蚀性能充满希望.

研究的目的:

对低碳钢的新型两层复合涂料的耐腐蚀性进行评估.
为了比较- (ZN) 和- (ZC) 合金层的性能,上面涂有.
研究这些先进涂料的保护机制.

主要方法:

制造Zn-Ni和Zn-Co合金的电沉积层与ZrO2sol-gel顶层.
使用SEM,EDX,AFM,XRD和XPS进行表面表征.
通过25天的潜在动力极化 (PDP),腐蚀潜力 (Ecorr),极化阻力 (Rp) 和开放电路潜力 (OCP) 测量对腐蚀性能进行评价.

主要成果:

的顶部涂层是无形的,密集的和疏水的.
与Zn-Ni (ZN) 和标准涂层相比,Zn-Co (ZC) 系统具有更高的耐腐蚀性和保护性.
的增强性能归因于其光滑,均的表面以及ZnO和Co3O4氧化物的屏障效应.

结论:

两层复合材料涂层,特别是ZC系统的顶层,为低碳钢提供了显著改善的耐腐蚀性.
体和底层合金氧化物的疏水性和屏障特性是增强保护的关键.
这些发现表明,开发先进的钢铁防护涂层是一个有希望的途径.

关键词:

耐腐蚀性耐腐蚀性耐腐蚀性结构的结构结构的结构.表面形态学表面形态学合金涂层的合金涂层.氧化氧化薄膜是一种氧化.

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相关概念视频

Corrosion

Corrosion

The degradation of metals due to natural electrochemical processes is known as corrosion. Rust formation on iron, tarnishing of silver, and the blue-green patina that develops on copper are examples of corrosion. Corrosion involves the oxidation of metals. Sometimes it is protective, such as the oxidation of copper or aluminum, wherein a protective layer of metal oxide or its derivatives forms on the surface, protecting the underlying metal from further oxidation. In other cases, corrosion is...