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Electrochemical Phase Formation of Metals and Alloys at Chemically Identical Solid or Liquid Cathode: Part 1. Metals
Surface Engineering and Applied Electrochemistry ( IF 1.1 ) Pub Date : 2020-04-06 , DOI: 10.3103/s1068375520010068
O. B. Girin , D. G. Korolyanchuk

Abstract

The existence of the phenomenon of electrochemical phase formation in metals and alloys via a supercooled liquid state stage is discussed. In dealing with that subject in terms of emergence and ultrarapid solidification of a deeply supercooled metallic liquid represented by a multitude of liquid atomic clusters, an idea was put forth that an identity of the state of aggregation between the cathode and the electrodepositing metal/alloy at the cathode–deposit interface must facilitate phase transformations at the interface. It was assumed that replacing a solid cathode with a chemically identical liquid one would lead to a wider spectrum of intermetallics formed due to interactions of the electrodepositing metal with elements of the liquid metallic cathode. Precision X-ray phase characterization was performed for the interface between the electrodepositing metal and a cathode of Wood’s alloy that persisted in either a solid or a liquid condition through the electrodeposition process. Relying on the data obtained, it was concluded that the phenomenon in point is proved by the formation enhancement of intermetallic compounds involving metallic cathode elements and the electrodepositing metal plus evolvement of additional intermetallics enriched in cathode elements, on replacing a solid cathode with a chemically identical liquid one.


中文翻译:

金属和合金在化学相同的固态或液态阴极上的电化学相形成:第1部分。金属

摘要

讨论了金属和合金中过冷液态阶段形成电化学相的现象的存在。在以大量液态原子团簇为代表的深过冷金属液体的出现和超快速凝固方面,解决该问题时,提出了一个想法,即在阴极处的阴极与电沉积金属/合金之间的聚集状态相同。阴极-沉积界面必须促进界面处的相变。假定用化学上相同的液体代替固体阴极将导致由于电沉积金属与液体金属阴极元素的相互作用而形成的更宽范围的金属间化合物。对电沉积金属和伍德合金阴极之间的界面进行了精确的X射线相表征,该界面通过电沉积过程以固态或液态状态存在。根据获得的数据,可以得出结论,这种现象可以通过以下方式得到证明:用化学相同的取代固态阴极,涉及金属阴极元素和电沉积金属的金属间化合物的形成增强,以及富集阴极元素的其他金属间化合物的演化液体一。
更新日期:2020-04-06
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