期刊
TRANSACTIONS OF THE INSTITUTE OF METAL FINISHING
卷 -, 期 -, 页码 -出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/00202967.2023.2264620
关键词
Nickel electrodeposition; nanocrystalline nickel; para-toluene sulphonamide; saccharin; brightness; stereochemistry; DFT
This study compared the brightness of electroplated nanocrystalline nickel coating with traditional electroplated bright nickel coating. The results showed that using saccharin instead of expensive brightening agents can achieve the same gloss. Computational chemistry results indicated that the most probable adsorption state of brightening additives is when the aromatic ring, double bond, or triple bond of the brightener molecule approaches the cathode surface during the adsorption process.
Nanocrystalline nickel coatings can be electrodeposited by using grain refiners like saccharin which consequently increase the gloss of the coating. Also, brighteners can produce bright coatings. The aim of this research was to compare the brightness of electroplated nanocrystalline nickel coating with traditional electroplated bright nickel coating. The coatings prepared from the bath containing saccharin and a bath with para-toluene sulphonamide had virtually the same gloss. Thus, instead of expensive brightening agents, saccharin can be used to achieve the same gloss in nickel plating. To investigate the stereochemistry of brightener molecules, the density functional theory (DFT) method was used at the computational level of B3LYP with the basis set 6-311G (d,p) ++ in a Gaussian software. The results of computational chemistry showed that the most probable state of adsorption of brightening additives is when the aromatic ring or a double bond or a triple bond of the brightener molecule approaches the cathode surface during the adsorption process.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据