Optimization of ethanol/ethylene glycol ratio and current density for electrochemical polishing of Ti6Al4V alloy with recast layer

IF 2.6 4区化学 Q3 ELECTROCHEMISTRY Journal of Solid State Electrochemistry Pub Date : 2024-09-23 DOI:10.1007/s10008-024-06083-2

Lun-ye Sun, Nuo Chen, Yong-gang Hou, Biao Chen, Qing-hong Zhou, Song Shi

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引用次数: 0

Abstract

Wire electrical discharge machining (WEDM) of the Ti6A14V alloy surface generates a recast layer and microcracks, which seriously affects the strength and corrosion resistance of the parts. Electrochemical polishing is widely used in metal surface finishing due to its low cost and high efficiency. To solve the problem of surface quality after WEDM machining, in this paper, electrochemical polishing of Ti6Al4V alloy after machining is investigated for different ethanol/glycol ratios of polishing solution and surface corrosion resistance. Based on this study, the effect of current density on the surface roughness, morphology, and corrosion resistance of WEDM-machined parts was also analyzed. By optimizing the ethanol/glycol ratio and current density, a micron-sized impurity-free Ti6Al4V surface was obtained at a glycol/ethanol ratio of 4:1 and a current density of 0.55 A cm⁻², and the surface roughness (Ra) was reduced from 3.69 to 0.40 μm. The microcracks and recast layer were completely removed, the corrosion current density was reduced by one order of magnitude, and the corrosion resistance was significantly improved, which amounted to 0.49 ± 0.04 µA cm⁻².

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来源期刊

Journal of Solid State Electrochemistry 工程技术-电化学

CiteScore

4.80

自引率

4.00%

发文量

227

审稿时长

4.1 months

期刊介绍： The Journal of Solid State Electrochemistry is devoted to all aspects of solid-state chemistry and solid-state physics in electrochemistry. The Journal of Solid State Electrochemistry publishes papers on all aspects of electrochemistry of solid compounds, including experimental and theoretical, basic and applied work. It equally publishes papers on the thermodynamics and kinetics of electrochemical reactions if at least one actively participating phase is solid. Also of interest are articles on the transport of ions and electrons in solids whenever these processes are relevant to electrochemical reactions and on the use of solid-state electrochemical reactions in the analysis of solids and their surfaces. The journal covers solid-state electrochemistry and focusses on the following fields: mechanisms of solid-state electrochemical reactions, semiconductor electrochemistry, electrochemical batteries, accumulators and fuel cells, electrochemical mineral leaching, galvanic metal plating, electrochemical potential memory devices, solid-state electrochemical sensors, ion and electron transport in solid materials and polymers, electrocatalysis, photoelectrochemistry, corrosion of solid materials, solid-state electroanalysis, electrochemical machining of materials, electrochromism and electrochromic devices, new electrochemical solid-state synthesis. The Journal of Solid State Electrochemistry makes the professional in research and industry aware of this swift progress and its importance for future developments and success in the above-mentioned fields.