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首页> 外文期刊>Journal of Applied Electrochemistry >Electrodeposition of zinc in the presence of quaternary ammonium compounds from alkaline chloride bath
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Electrodeposition of zinc in the presence of quaternary ammonium compounds from alkaline chloride bath

机译：在碱性氯化物浴中存在季铵化合物的情况下电沉积锌

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摘要

The effects of several quaternary ammonium compounds on electrodeposition of zinc onto AISI 1018 carbon steel were studied in an alkaline zincate electrolyte. Tetraethylammonium, tetrabutylammonium, N-benzyltriethylammonium and N-benzyl-3-carboxyl pyridinium cations were examined. The electrochemical behavior and the inhibition of dendrite formation are related to the structure of the ammonium compounds. The presence of either long-chain aliphatic groups or aromatic groups, i.e., with tetrabutylammonium hydroxide (TBAOH) or N-benzyltriethylammonium chloride (NBT) exerts a more effective inhibition of dendrite formation. N-benzyl-3-carboxylpyridinium (3NCP) and tetraethylammonium hydroxide (TEAOH) additives lead to slightly deformed deposit morphology. Crystallographic measurements of the zinc deposits revealed a highly oriented deposit formed in the presence of 3NCP, which favors the dense atomic packing basal plane (002). The presence of TEAOH diminishes slightly the peak of plane (002) and introduces some pyramidal (101) orientation. Addition of NBT or TBAOH favors the formation of low-atomic packing prismatic planes. Additives that increase the overpotential for Zn(II) reduction tend to promote the formation of high-energy low-atomic packing crystallographic planes. Comparison of the effects of these ammonium compounds indicates that the observed effects are related to the hydrophobic and steric interactions introduced to the interface by the size and structure of the ammonium compounds.
机译：在碱性锌酸盐电解液中研究了几种季铵盐化合物对AISI 1018碳钢上锌电沉积的影响。检查了四乙基铵，四丁基铵，N-苄基三乙基铵和N-苄基-3-羧基吡啶鎓阳离子。电化学行为和对枝晶形成的抑制与铵化合物的结构有关。长链脂族基团或芳族基团的存在，即与氢氧化四丁基铵（TBAOH）或N-苄基三乙基氯化铵（NBT）一起，可更有效地抑制枝晶的形成。 N-苄基-3-羧基吡啶鎓（3NCP）和氢氧化四乙铵（TEAOH）会导致沉积物形态稍微变形。锌沉积物的晶体学测量显示在3NCP存在下形成了高度取向的沉积物，这有利于致密的原子堆积基面（002）。 TEAOH的存在会稍微降低平面（002）的峰并引入一些金字塔形（101）的方向。添加NBT或TBAOH有助于形成低原子堆积棱柱形平面。增加Zn（II）还原的超电势的添加剂往往会促进高能低原子堆积晶体平面的形成。这些铵化合物的作用的比较表明，观察到的作用与铵化合物的大小和结构引入界面的疏水和空间相互作用有关。

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