Upgrade recycling of cast iron scrap chips towards β-FeSi2 thermoelectric materials

Nor Hairin, Assayidatul Laila and Nanko, Makoto and Takeda, Masatoshi (2014) Upgrade recycling of cast iron scrap chips towards β-FeSi2 thermoelectric materials. Materials, 7. pp. 6304-6316. ISSN 1996-1944

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Abstract

The upgrade recycling of cast-iron scrap chips towards β-FeSi2 thermoelectric materials is proposed as an eco-friendly and cost-effective production process. By using scrap waste from the machining process of cast-iron components, the material cost to fabricate β-FeSi2 is reduced and the industrial waste is recycled. In this study, β-FeSi2 specimens obtained from cast iron scrap chips were prepared both in the undoped form and doped with Al and Co elements. The maximum figure of merit (ZT) indicated a thermoelectric performance of approximately 70% in p-type samples and nearly 90% in n-type samples compared to β-FeSi2 prepared from pure Fe and other published studies. The use of cast iron scrap chips to produce β-FeSi2 shows promise as an eco-friendly and cost-effective production process for thermoelectric materials.

Item Type:	Article (Journal)
Additional Information:	7683/67956
Uncontrolled Keywords:	materials recycling; cast iron scrap chips; thermoelectric performance; β-FeSi2
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA401 Materials of engineering and construction T Technology > TH Building construction > TH6014 Environmental engineering.
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering Kulliyyah of Engineering
Depositing User:	Dr Assayidatul Laila Nor Hairin
Date Deposited:	01 Feb 2019 09:52
Last Modified:	01 Feb 2019 09:52
URI:	http://irep.iium.edu.my/id/eprint/67956

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