Sang-Hee Kim, Jong-Beom Choi, Kyung-Hwang Lee, Seo-Hee Kim, Jun Kang, Myeong-Hoon Lee, Yong-Sup Yun
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引用次数: 0
摘要
由于划痕和剥落等问题,传统的涂黑工艺在耐腐蚀性和美观性方面都面临挑战。本研究探索了一种替代方法,即阳极氧化法,对镀锌或涂层钢板表面进行发黑处理。在发黑过程中,温度、持续时间、电流密度和气体类型等参数都会发生变化。调查旨在找出影响发黑的关键因素。扫描电子显微镜观察了形貌,而能量色散 X 射线光谱法和辉光放电质谱法分析了化学成分分布。X 射线衍射和 X 射线光电子能谱分析了化合物晶体结构。结果表明,更高的温度、更长的持续时间和更高的电流密度可通过阳极氧化改善发黑。表面镁比例的增加导致粗糙和多孔氧化镁的形成,从而增强了光吸收并解释了所观察到的发黑效应。
Analysis of Blackening Reaction of Zn–Mg–Al Alloy Coated Steel Prepared by Anodizing Process
The rising demand for black-treated steel faces challenges with conventional black painting due to issues like scratching and peeling, impacting corrosion resistance and aesthetics. This study explores an alternative method, anodic oxidation, to blacken the surfaces of galvanized or
coated steel plates. Parameters like temperature, duration, current density, and gas type were varied during the blackening process. The investigation aimed to identify key factors influencing the blackening. Scanning electron microscopy observed the morphology, while energy-dispersive X-ray
spectroscopy and glow discharge mass spectrometry analyzed the chemical composition distribution. X-ray diffraction and X-ray photoelectron spectroscopy conducted compound crystal structure analysis. Results indicate higher temperatures, longer durations, and higher current densities improve
blackening through anodic oxidation. Increased magnesium proportion on the surface leads to roughness and porous magnesium oxide formation, enhancing light absorption and explaining the observed blackening effect.