Preparation of eco-friendly Fe2VAl-based thermoelectric materials using cast iron scrap chips as a source material

Nor Hairin, Assayidatul Laila and Nanko, Makoto and Takeda, Masatoshi (2020) Preparation of eco-friendly Fe2VAl-based thermoelectric materials using cast iron scrap chips as a source material. Materials Transactions, 61 (11). pp. 2216-2221. ISSN 1345-9678

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Abstract

This study investigates the upgraded recycling of cast-iron scrap chips in synthesising Heusler alloys Fe2VAl for thermoelectric materials. It mainly examines the microstructure and the thermoelectric performance of the products. The thermoelectric performance showed positive results, as the maximum power factor, the PF value, of p-type 2C.I.-V-Al prepared using cast-iron scrap chips (the prefix ‘C.I.’ presumably stands for ‘cast-iron scrap chips’) was 1604 µWm−1K−2 at 200°C, the highest PF value. Meanwhile, the undoped 2C.I.-V-Al prepared using cast-iron scrap chips showed an approximate two-fold improvement in the power factor value, with 967 µWm−1K−2 at 200°C, a higher PF value than those previously reported. Unfortunately, in this study, the n-type 2C.I.-V-Al specimen made from cast-iron scrap chips could not be fabricated due to the effect of unavoidable impurities in the cast-iron scrap chips. The use of cast-iron scrap chips to produce undoped and p-type 2C.I.-V-Al alloys can contribute towards eco-friendly and cost-effective production processes

Item Type:	Article (Journal)
Uncontrolled Keywords:	Fe2VAl alloys, thermoelectric materials, recycling alloys, power factor
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	Dr Assayidatul Laila Nor Hairin
Date Deposited:	29 Sep 2022 09:55
Last Modified:	29 Sep 2022 09:55
URI:	http://irep.iium.edu.my/id/eprint/88295

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