Thermoelectric properties of B-FeSi2 thermoelectric module utilizing cast-iron scrap chips

Nor Hairin, Assayidatul Laila and Jailani, Muhammad Haziq Hakmal and Megat Hasnan, Megat Muhammad Ikhsan (2023) Thermoelectric properties of B-FeSi2 thermoelectric module utilizing cast-iron scrap chips. In: 5th International Conference on Advances in Manufacturing and Materials Engineering (ICAMME2022), 9th - 10th August 2022, Kuala Lumpur, Malaysia.

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Abstract

Semiconducting β-FeSi2 has been considered one of the most promising thermoelectric materials among numerous innovative thermoelectric materials due to its inexpensive cost and exceptional oxidation resistance up to 900 °C. Thermoelectric generation modules consisting of pairs of p-type 0.94C.I.-0.06Co-1.86Si and n-type 0.92C.I.-0.08Mn-1.86Si have been fabricated using Cu sheets as electrodes and Ag paste as bonding material. In an experiment, the maximum power density is measured by using a variable resistor range of 10Ω—10 kohm. Two different temperatures that are tested in this project are 40 and 60 °C. A rectangle and a trapezoid as the thermoelectric leg shape geometry are compared. The percentage difference for voltage is around 21% while the power shows a 41 and 65% difference depending on the temperature difference. The latter percentage difference is possessed by higher T. Based on the comparison with the reference, thermoelectric module from cast iron scrap chips was comparable and better than the reference. Trapezoid shows better geometry than rectangular shape in terms of thermoelectric power density. At 40 °C, the maximum power output are 21.89 and 21.91 μW whilst the maximum power for 60 °C are 28.13 μW and 28.42 μW for rectangle and trapezoid respectively.

Item Type:	Conference or Workshop Item (Other)
Uncontrolled Keywords:	β-FeSi2 thermoelectric module ·Cast-iron scrap chips ·Power density
Subjects:	T Technology > T Technology (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2896 Production of electricity by direct energy conversion
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:	22 Sep 2023 15:43
Last Modified:	22 Sep 2023 16:00
URI:	http://irep.iium.edu.my/id/eprint/106999

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