Abstract
The electrodeposition of Fe–Al alloy in AlCl3–NaCl–KCl–FeCl2 quaternary molten salts was investigated by potentiostatic electrolysis to prepare Fe–Al alloy film with a thermoelectric conversion function. In the AlCl3–NaCl–KCl–FeCl2 molten salts with an AlCl3/FeCl2 mole ratio of 200 (FeCl2: 32.6 mmol l−1), the electrodeposited Al formed a solid solution with Fe in the potential range from 0.5 to 0.2 V vs Al(III)/Al and formed the intermetallic compound of Fe3Al at the potential of 0.1 V. Fe–Al alloys containing 0.8–34.5 mol% Al were obtained by controlling the AlCl3/FeCl2 mole ratio (FeCl2 concentration) in AlCl3–NaCl–KCl–FeCl2 molten salts and the applied potential in the potential range from 0.2 to −0.1 V vs Al(III)/Al. The Fe–Al alloy films prepared in the present study exhibited the p- or n-type thermoelectric conversion, depending on their composition.
Publisher
The Electrochemical Society
Subject
Materials Chemistry,Electrochemistry,Surfaces, Coatings and Films,Condensed Matter Physics,Renewable Energy, Sustainability and the Environment,Electronic, Optical and Magnetic Materials
Cited by
3 articles.
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