Effects of Organic Additives on Alkaline Non-Cyanide Zinc Electroplating

被引:0
|
作者
Jeon, Su-Byung [1 ,2 ]
Son, Byung-Ki [2 ]
Choi, Ji-Won [2 ]
Son, Injoon [1 ]
机构
[1] Kyungpook Natl Univ, Dept Mat Sci & Met Engn, Daegu 41566, South Korea
[2] ILSUNG Plating Co Ltd, R&D Ctr, Daegu 42697, South Korea
关键词
zinc electroplating; organic additives; alkaline electrolytes; non-cyanide; Polyquaternium-2; high corrosion resistance; CORROSION BEHAVIOR; ELECTRODEPOSITION; ALLOY;
D O I
10.3390/coatings13040781
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We investigated the effects and interactions of the organic additives Polyquaternium-2 (PUB) and 1-benzyl pyridinium-3-carboxylate (BPC) in alkaline non-cyanide zinc electroplating. As PUB and BPC were added, the cathode potential of the polarization curve shifted in the negative direction at the same current density that occurred in the electrochemical experiment, and as confirmed by a scanning electron microscopy, the particles on the plating surface in the zinc deposits became finer, and the grain size decreased. Moreover, strong (101) and (002) peaks appeared in the X-ray diffraction pattern when no additive was added. However, as PUB and BPC were added, the intensity of the two peaks decreased, and an increase in the intensity of the (100) peak changed to a crystallographic orientation. With the addition of PUB and BPC, the gloss and whiteness gradually increased, and the surface roughness decreased. Finally, the throwing power tended to increase as PUB and BPC were added.
引用
收藏
页数:15
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