Effect of Dissolution of Titanium Ions on Ti Alloys Electrodeposition from EMIC-AlCl3 Ionic Liquid at Low Temperature

Effect of Dissolution of Titanium Ions on Ti Alloys Electrodeposition from EMIC-AlCl3 Ionic Liquid at Low Temperature
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钛离子溶解对EMIC-AlCl3离子液体低温电沉积钛合金的影响

DOI:
10.1007/978-3-030-65253-1
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发表时间:
2021
期刊:
The minerals metals materials series
影响因子:
--
通讯作者:
Shinde S. Pravin, Reddy
Shinde S. Pravin, Reddy
中科院分区:
--
文献类型:
--
作者:
Shinde S. Pravin, Reddy

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研究了电解过程中钛阳极上钛离子的溶解对1-乙基-3-甲基咪唑氯化物(EMIC)和0.667摩尔分数的氯化铝(AlCl 3)组成的刘易斯酸性低共熔混合物中Ti-Al合金电沉积层还原行为的影响。采用恒电位电解法和恒电流电解法分别将钛离子溶于EMIC-AlCl 3离子液体中,并采用计时电流法(CA)和计时电位法(CP)对钛离子进行了测定。同时,在383 K下,以Ti为阳极,在铜阴极上实现了Ti-Al合金的电沉积。通过改变电解电流、电位和电解持续时间(1-3 h)来控制Ti物质的溶解、浓度和沉积。采用循环伏安法研究了Ti和Al离子在全铂丝电极上的电化学还原行为。扫描电镜研究表明,均匀和结晶钛铝电镀CP电解。EDS和XRD显示16at%。Ti和立方Ti 0。12A10. 88相的Ti-Al合金。随着电解时间的延长,钛铝合金中钛含量降低。
In this work, the dissolution of Ti ions from a sacrificial Ti anode during electrolysis on the reduction behavior of Ti–Al alloy electrodeposits from a Lewis acidic eutectic mixture of 1-ethyl-3-methylimidazolium chloride (EMIC) and a 0.667-mol fraction of aluminum chloride (AlCl3) is investigated. The Ti ions are dissolved in EMIC-AlCl3 ionic liquid (IL) by potentiostatic and galvanostatic electrolysis using chronoamperometry (CA) and chronopotentiometry (CP) techniques, respectively. At the same time, the electrodeposition of the Ti–Al alloy is accomplished on the copper cathode electrode at 383 K using the Ti anode. The dissolution, concentration, and deposition of Ti species are controlled by varying the electrolysis current, potential, and the electrolysis duration (1–3 h). The electrochemical reduction behavior of Ti and Al ions is studied on all Pt wire electrodes using cyclic voltammetry (CV). SEM studies revealed homogeneous and crystalline Ti–Al electrodeposits for CP-electrolysis. EDS and XRD revealed 16 at%. Ti with a cubic Ti0. 12Al0. 88 phase of Ti–Al alloy obtained from 1 h CP-electrolysis. The Ti content in Ti–Al alloy decreased with an increase in electrolysis time.
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