Prior to electrodeposition, steel sheets underwent polishing using emery paper, buff, and then electrolytic polishing. Zn deposition was performed galvanostatically at 1500 A/m~(2) in an agitated sulfate solution at 40°C to investigate the effect of the surface textures of steel sheets on the crystal orientation of Zn. The strain of the steel surface and the decrease in Fe grain size due to this strain were largest with emery paper polishing, then with buff polishing, then when unpolished, and were smallest after electrolytic polishing. The preferred orientation of the {0001} Zn basal plane of the hcp structure was largest with electrolytic polishing, and decreased in the following order: unpolished, buff polishing, and then with emery paper polishing. Thus, the preference of the {0001} orientation of Zn increased with decreasing the strain of steel sheets and increasing the grain size of Fe. With electrolytic polishing, the strain applied to the steel sheets was decreased, the grain size of Fe increased, and therefore the epitaxial growth of deposited Zn occurred easily. The initial Zn deposits appeared to grow epitaxially as indicated by the orientation relationship of {111}Fe//{0001}Zn because the preferred orientation of the steel substrate used in this study is {111} Fe. The preferred orientation of {0001} Zn seems to be more common under conditions where the epitaxial growth of deposited Zn is easy to occur.
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机译：电沉积之前，先用金刚砂纸，抛光纸对钢板进行抛光，然后再进行电解抛光。在40°C的硫酸盐溶液中，以1500 A / m〜（2）恒电流进行Zn沉积，以研究钢板表面纹理对Zn晶体取向的影响。钢表面的应变和由于该应变而导致的铁晶粒尺寸的减小在金刚砂纸抛光之后最大，然后在buff抛光下然后在未抛光时最大，而在电解抛光之后最小。 hcp结构的{0001} Zn基面的首选取向在进行电解抛光时最大，并按以下顺序减小：未抛光，抛光（buff）抛光，然后进行砂纸抛光。因此，Zn的{0001}取向的偏好随着钢板的应变的减小和Fe的晶粒尺寸的增大而增加。通过电解抛光，减小了施加到钢板上的应变，增加了Fe的晶粒尺寸，因此容易发生沉积的Zn的外延生长。如{111} Fe // {0001} Zn的取向关系所示，最初的Zn沉积物似乎是外延生长的，因为本研究中使用的钢基材的首选取向为{111} Fe。在容易发生沉积的Zn的外延生长的条件下，{0001} Zn的优选取向似乎更为普遍。
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