The Research of Large Current Alkaline Zinc Surface Deposition

• Main Author: 洪毓宏
• Other Authors: 楊凱琳
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/55074520931921681507

碩士 === 高苑科技大學 === 電子工程研究所 === 104 === In this study, the direct current (DC) used to prepare the alkaline zinc coating on the Fe sheets for comparison. In addition, the complexing agents were added into the electroplating bath to improve the current efficiency and inhibit the formation of the dendritic structure on the Fe sheets while zinc coating. In this investigation, three kinds of additives, i.e., anise aldehyde, and Lugivam P were used as the electroplating complexing agents, as well as the DC and pulse power supply modes were be carried out separately. The electrochemical behavior of the Fe sheets after alkaline zinc coat-ing would be analyzed and the materials properties would also be examined. The Hull cell was used to prepare the alkaline zinc plating. The Lugivam P was added in to the electroplating bath to inhibit the dendritic structure deposition during electroplating. The anisaldehyde and the zinc ions complexion would beneficial to generate a smooth coating surface. The crystalline of the deposits was analyzed using the X-ray diffraction analyzer (XRD) and the surface morphology of the deposits was observed by the scanning electron microscope (SEM). The results show that the complexing agent species ( anise aldehyde, and Lu-givam P) and electroplating modes (DC) would result in the different crystalline char-acteristics, resulting the surface smoothness and gloss of the deposits surfaces. Zinc coating anodic dissolution behaviors would be subjected to the zinc salt an-ion, and also the additives, the current intensity and the electroplating modes. In this study, the Lugivam P addition could be obtained the relatively highest flatness, which inhibited the generation of hydrogen and dendritic structure formation during electro-plating.