CAJ | 학술논문

超重力条件下，温度75℃，以摩尔比为2：1的 AlCl3-BMIC 离子液体为电解液，在铝电极上采用循环伏安法研究铝的电沉积过程，在不锈钢电极上进行铝的恒电流电沉积实验，并研究超重力环境对铝镀层表面形貌和晶体结构的影响。采用扫描电子显微镜(SEM)和X射线衍射(XRD)分别对铝镀层形貌和晶体结构进行研究。循环伏安实验结果表明，常重力和超重力环境下铝电沉积过程均为扩散控制的准可逆过程，且超重力系数(G)对于电沉积过程中铝离子的扩散系数没有影响；超重力场通过强化电解液中的对流过程而强化电沉积过程。SEM结果表明，超重力场能够细化晶粒、避免枝晶产生，获得附着性良好的镀层。XRD分析表明，铝镀层晶面择优取向为(111)面，并随着G的增大，(111)晶面优势加强。
초중력조건하，온도75℃，이마이비위2：1적 AlCl3-BMIC 리자액체위전해액，재려전겁상채용순배복안법연구려적전침적과정，재불수강전겁상진행려적항전류전침적실험，병연구초중력배경대려도층표면형모화정체결구적영향。채용소묘전자현미경(SEM)화X사선연사(XRD)분별대려도층형모화정체결구진행연구。순배복안실험결과표명，상중력화초중력배경하려전침적과정균위확산공제적준가역과정，차초중력계수(G)대우전침적과정중려리자적확산계수몰유영향；초중력장통과강화전해액중적대류과정이강화전침적과정。SEM결과표명，초중력장능구세화정립、피면지정산생，획득부착성량호적도층。XRD분석표명，려도층정면택우취향위(111)면，병수착G적증대，(111)정면우세가강。
In high gravity field, the electrodeposition process of Al was studied by cyclic voltammetry (CV) on Al electrodes, and the constant current electrodeposition of Al was conducted on stainless steel electrodes from AlCl3-BMIC ionic liquids with 2:1 molar ratio at 75 ℃. The influence of high gravity field on the surface morphology and crystal structure of the Al coatings was also investigated. Scanning electron microscopy (SEM) and X-ray diffractometry (XRD) were used to study the morphology and crystal structure of the Al coatings, respectively. Analyses of the CV indicate that the electrodeposition of Al is a diffusion-controlled quasi reversible process either in normal or in high gravity field, and the high gravity coefficient (G) has no influence on the diffusion coefficient of Al ions. The electrodeposition process is strengthened with the intensification of convection of electrolyte in high gravity field. SEM results show that high gravity field can refine the grain and avoid dendrite, resulting in good adhesive coatings. XRD analysis reveals that all of the electrodeposits exhibit a preferred (111) crystallographic orientation, and they are enhanced with the increase of G.