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High throughput screening of localised and general corrosion in type 2205 duplex stainless steel at ambient temperature

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International Journal of Minerals,Metallurgy and Materials 2023年第12期30卷 2375-2385页

作者： Yiqi Zhou Sultan Mahmood Dirk Lars Engelberg Beijing Advanced Innovation Center for Materials Genome Engineering Institute for Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing 100083China Metallurgy and Corrosion School of MaterialsThe University of ManchesterM139PLManchesterUK Materials Performance Centre The University of ManchesterM139PLManchesterUK

bipolar electrochemistry is used to produce a linear potential gradient across a bipolar electrode(BPE),providing direct access to the anodic and cathodic reactions under a wide range of applied *** occurrence of pitting corrosion,crevice corrosion,and general corrosion on type 2205 duplex stainless steel(DSS 2205)BPE has been observed at room *** critical pit depth of 10-20μm with a55%-75% probability of pits developing into stable pits at potential from+0.9 to+1.2 V ***(open circuit potential)are *** pit nucleation sites are either within ferritic grains or at the interface between austenite and *** critical conditions for pitting and crevice corrosion are discussed with Epit(critical pitting potential)and Ecre(critical crevice potential)decreasing from 0.87 and 0.80 V *** after150 s of exposure to 0.84 and 0.76 V *** after 900 s of exposure,*** growth kinetics under different applied bipolar potentials and exposure times have been *** ferrite is shown to be more susceptible to general dissolution.

关键词： bipolar electrochemistry duplex stainless steel pitting corrosion pit growth factor crevice corrosion

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Visual Voltammogram at an Array of Closed bipolar Electrodes in a Ladder Configuration

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Journal of Analysis and Testing 2019年第2期3卷 150-159页

作者： Janis S.Borchers Olga Riusech Eric Rasmussen Robbyn K.Anand Department of Chemistry Iowa State University1605 Gilman Hall2415 Osborn DriveAmesIA 50011USA

In this paper,we report a method for obtaining a visual voltammogram at a linear array of closed wireless bipolar electrodes(BPEs).This advancement is significant,because the visual voltammogram captures the entire current-potential(i-E)relationship of a faradaic reaction in one image and is continuously generated over ***,we anticipate that this method will allow monitoring in redox systems that change over ***,the use of a linear array of BPEs eliminates the need to use a potentiostat and can be carried out with a simple DC power *** experimental and numerical results demonstrate that the visual voltammogram is similar to a linear sweep voltammogram and therefore,information about the faradaic process can be extracted from the wave position,height,and shape.

关键词： bipolar electrochemistry Voltammetry Electrogenerated chemiluminescence Visual voltammogram Flow cell

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Fabrication of luminescent patterns using aggregation-induced emission molecules by an electrolytic micelle disruption approach

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Aggregate 2023年第1期4卷 231-237页

作者： Yaqian Zhou Elena Villani Tomoyuki Kurioka Yanyun Zhang Ikuyoshi Tomita Shinsuke Inagi Department of Chemical Science and Engineering School of Materials and Chemical TechnologyTokyo Institute of TechnologyYokohamaJapan PRESTO Japan Science and Technology Agency(JST)KawaguchiJapan

Herein,we report an electrochemical strategy that could control the location of aggregation-induced emission(AIE)molecules on patterned electrodes in a precise and facile way,producing photoluminescent and electrochemiluminescent patterns with a variety of colors.A micelle composed of electroactive surfactants was broken during the electrooxidation process,in which AIE molecules inside these micelles were released on patterned *** patterned electrodes were pretreated by not only metal,but also multifarious conducting polymers(CPs).An in-depth investigation clarified a correlation between the variety of CPs used as electrodes and the oxidation rate of the electroactive surfactant due to different catalytic performances of ***,combined with wireless and gradient features of bipolar electrochemistry,a gradient luminescent pattern was easily *** current studies suggest more abundant luminescent patterns using AIE luminophores can be developed by such an electrochemical method,in both of graphical shapes and emitting colors.

关键词： aggregation-induced emission bipolar electrochemistry catalysis conducting polymers electrochemiluminescence electrolytic micelle disruption

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基于纳米结构导电聚合物的无线电泵设计与合成

基于纳米结构导电聚合物的无线电泵设计与合成

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中国化学会第十四届全国电分析化学学术会议

作者：张琳 Bhavana Gupta Alexander Kuhn 纳米杂化材料应用技术国家地方联合工程研究中心河南大学 Univ. Bordeaux ISM CNRS UMR 5255 Bordeaux INP ENSCBP

与刚性材料体系相比,智能软材料的合理设计和成形具有不可替代的应用前景。其中具有电响应的弹性材料非常适合用于开发具有原创性结构的动力装置,例如泵和致动器。但是,电刺激信号的施加通常需要在装置和电源之间通过导线进行物理连接,... 详细信息

与刚性材料体系相比,智能软材料的合理设计和成形具有不可替代的应用前景。其中具有电响应的弹性材料非常适合用于开发具有原创性结构的动力装置,例如泵和致动器。但是,电刺激信号的施加通常需要在装置和电源之间通过导线进行物理连接,在一定程度上限制了其应用。聚吡咯是一种导电聚合物,在已报道的工作中,证明了在双极电化学的帮助下,聚吡咯能够实现无线致动[1],并通过其无线电化学致动的光学信息实现化学传感以及生物传感[2]。在此基础上,我们通过设计合成管状导电聚合物,实现无线微流体泵的应用。通双极电场引发管状聚吡咯两端的不对称极化,可以在不与电源进行任何物理连接的情况下,同时诱发溶液中聚吡咯管特定部位的收缩和溶胀。聚吡咯管两端发生的不同的电化学反应导致其直径发生变化,从而引起溶液中高度受控的流体动力学行为。在此工作中,我们通过优化导电高分子管的壁厚,长度和内径来调控这类具有无线电响应软性泵的性能。此类具有高效快速致动性能的聚合物泵将为流体或微流体装置领域中致动器的开发（例如药物控制释放,人造器官和生物致动器）提供新的思路。

关键词： bipolar electrochemistry Electropumping Microfluidics Conducting polymer

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