Chiral Electrodeposition by the Rotation in a Vertical Magnetic Field

作     者：AOGAKI Ryoichi TAKAGI Satoshi MORIMOTO Ryoichi SUGIYAMA Atsushi MOGI Iwao ASANUMA Miki MIURA Makoto OSHIKIRI Yoshinobu YAMAUCHI Yusuke 

作者机构：Polytechnic University RyogokuSumida-kuTokyo130-0026Japan National Institute for Materials Science(NIMS) TsukubaIbaraki305-0044Japan Saitama Prefectural Okubo Water Filtration Plant Saitama338-0814Japan Graduate School of Advanced Science and EngineeringWaseda University Institute for Materials ResearchTohoku University Yokohama Harbour Polytechnic College Polytechnic College Akita Yamagata College of Industry and Technology National Institute for Materials Science(NIMS) 

出 版 物：《Journal of Iron and Steel Research International》 (钢铁研究学报(英文版))

年 卷 期：2012年第19卷第S2期

页      面：1158-1161页

核心收录：

学科分类：080804[工学-电力电子与电力传动] 080805[工学-电工理论与新技术] 0808[工学-电气工程] 08[工学] 

主　　题：chirality chiral electrodeposition magnetoelectrodeposition rotation magnetic field ionic vacancy 

摘      要：The roles of the rotations in the process of chirality appearance in magnetoelectrodeposition were theoretically *** in a vertical magnetic field induces a macroscopic fluid rotation called vertical MHD flow(VMHDF) over the electrode *** the rotation,minute numerous micro-vortexes called micro-MHD flow(MMHDF) arise from 2D and 3D nucleation,which interact with the mass flux of metallic ion,yielding chiral deposits with the characteristic features called micro- and nano-mystery ***,numerous vortexes always keep chiral symmetry,forming four types of vortexes,i.e.,with the combination of upward or downward and clockwise or ***,ionic vacancy acting as an atomic scale lubricant is created in electrodeposition,which gives a restriction to the vortexes;the bottom of an upward vortex covered with ionic vacancies becomes a free surface without friction,whereas the bottom of a downward vortex exposed without ionic vacancies remains rigid with *** rotation of VMHDF donates a precession to the upward vortexes to rotate in the same direction,which finally yield a chiral *** similar effect to that of VMHDF can be expected for the system rotation(SR),where an electrolytic cell rotates in a vertical magnetic *** this case,the SR gives the reverse rotation to the upward vortexes,so that a deposit with reverse chirality is obtained.