静磁场对印制电路板模具腐蚀的影响。
Effect of static magnetic field on mold corrosion of printed circuit boards.
机构信息
Corrosion and Protection Center, Institute of Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, PR China; National Materials Corrosion and Protection Data Center, University of Science and Technology Beijing, Beijing 100083, PR China.
Corrosion and Protection Center, Institute of Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, PR China; National Materials Corrosion and Protection Data Center, University of Science and Technology Beijing, Beijing 100083, PR China.
出版信息
Bioelectrochemistry. 2020 Feb;131:107394. doi: 10.1016/j.bioelechem.2019.107394. Epub 2019 Sep 13.
Mold has a strong impact on the corrosion behavior of metals, especially under environmental conditions conducive to mold growth. However, the magnetic fields generated by electronic devices have effects on the metal corrosion and mold growth. In this study, a 10 mT static magnetic field (SMF) perpendicular to the surface of samples was applied to study the corrosion of a copper-clad printed circuit board (PCB-Cu) by mold under the SMF. Based on the analysis of the corrosion morphology of the PCB-Cu after a test in the atmosphere and the composition of the corrosion products, the corrosion behavior of mold on the PCB-Cu in the presence or absence of the SMF was revealed. In the absence of a magnetic field, mold formed a spore-centered corrosion pit group on the surface of the PCB-Cu, which was macroscopically characterized by regional uniform corrosion. When a 10 mT SMF was applied, the magnetic field exhibited an inhibitory effect on the growth of mold, which was hindered, and the corrosion of the PCB-Cu surface slowed down.
霉菌对金属的腐蚀行为有很强的影响，特别是在有利于霉菌生长的环境条件下。然而，电子设备产生的磁场对金属腐蚀和霉菌生长有影响。在这项研究中，在垂直于样品表面的方向施加了一个 10 mT 的静态磁场（SMF），以研究在 SMF 下霉菌对覆铜印刷电路板（PCB-Cu）的腐蚀作用。通过在大气中进行测试后的 PCB-Cu 腐蚀形貌分析和腐蚀产物的成分分析，揭示了有无磁场存在时霉菌对 PCB-Cu 的腐蚀行为。在没有磁场的情况下，霉菌在 PCB-Cu 表面形成以孢子为中心的腐蚀坑群，宏观上表现为局部均匀腐蚀。当施加 10 mT 的 SMF 时，磁场对霉菌的生长表现出抑制作用，霉菌的生长受到阻碍，PCB-Cu 表面的腐蚀速度减缓。
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