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高合金 (AlNiCoCrFe) 涂层的微观结构和耐腐蚀性,由TIG工艺制成

Mahmoud Ardeshir¹, Mardali Yousefpour¹, Seyad Mohammad Sadegh Nourbabksh¹

¹Faculty of Materials and Metallurgical Engineering, Semnan University, Semnan, 35131-19111, Iran.

|January 6, 2025

概括

钢的高合金涂层显著提高了硬度和耐腐蚀性. 使用AlNiCoCrFe在110A时通过气体弧接实现了最佳性能.

科学领域:

材料科学材料科学材料科学
腐蚀工程腐蚀工程

背景情况:

高合金 (HEAs) 与传统合金相比,具有优越的机械性能和耐腐蚀性.
表面涂层对于提高基础材料 (如普通碳钢) 的性能至关重要.

研究的目的:

研究AlNiCoCrFe高合金涂层对普通碳钢的机械性能和耐腐蚀性的影响.
为了确定最佳的气体弧接电流,以实现增强的涂层性能.

主要方法:

制备一个等分的AlNiCoCrFe粉末混合物.
涂层应用于普通碳钢,使用气弧接在90,110和130A.
评估涂层结构 (BCC,FCC阶段),硬度 (HVN) 和耐腐蚀性 (电动极化,电化学阻抗光谱在1M HCl).

主要成果:

在110A时,AlNiCoCrFe涂层呈现出两相 (BCC和FCC) 的结构.
硬度从大约180HVN显著增加到650HVN.
钢基板的耐腐蚀性得到了显著改善,极化阻力从62.5增加到834 Ωcm2.
在110A的接电流下观察到最佳的耐腐蚀性.

结论:

气弧接AlNiCoCrFe提供了一种可行的方法来提高普通碳钢的硬度和耐腐蚀性.
涂层的微观结构和性能强烈依赖于接电流,110 A产生最佳结果.
在腐蚀性环境中,AlNiCoCrFe涂层是保护钢铁的一种有前途的方法.

关键词:

电化学测量电化学测量 FCC固体溶液的固体解决方案气体弧的钢弧.硬面涂层是一种硬面涂层.高合金是一种高合金.

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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...