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在无化物无水浴中对NdFeB电膜的微观结构和保护性质

Li Xiaoya¹, Ma Yongcun¹, Peng Shusen¹

¹School of Materials Science and Engineering, Jiangxi Provincial Engineering Research Center for Surface Technology of Aeronautical Materials, Nanchang Hangkong University Nanchang 330063 China pengshs@nchu.edu.cn.

|March 18, 2024

概括

这项研究开发了一种使用乙烯糖醇 (EG) 的非水性电方法,以防止铁 (NdFeB) 磁铁腐蚀. 新的涂工艺有效地保护了NdFeB,与传统的水性方法不同.

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:

在NdFeB磁铁上对进行传统的水性电,会导致显著的腐蚀和演变.
铁 (NdFeB) 磁铁在水环境中容易腐蚀.

研究的目的:

开发一种无化物非水性电方法,用于膜沉积在NdFeB上.
调查非水性乙烯基醇 (EG) 浴在涂过程中防止NdFeB腐蚀的有效性.

主要方法:

使用循环电压计 (CV) 和线性扫描电压计 (LSV) 的电化学表征.
机身细胞测试在黄铜上.
开放电路电位 (OCP) 测试和扫描电子显微镜 (SEM) 用于腐蚀分析.
优化酸 (Zn(OAc) 2) 度,电流密度和温度.

主要成果:

使用酸 (Zn(OAc) 2),酸 (NaOAc) 和乙烯基醇 (EG) 建立了一个无化物非水性浴.
在优化条件 (0.7 M Zn(OAc) 2, 6 mA cm-2, 60 °C) 下,在NdFeB上产生了密集的金属膜.
与传统的水浴相比,非水性EG浴 significantly显著抑制了NdFeB腐蚀.
沉积的膜表现出优越的保护性能.

结论:

非水性电方法有效地保护NdFeB磁铁免受腐蚀.
基于乙烯糖醇的非水性浴提供了水性浴的优越替代方案,用于涂NdFeB.
这种方法提供了增强的耐腐蚀性,并保持了NdFeB磁铁的完整性.

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