Upgrade Recycling of Cast Iron Scrap Chips towards β-FeSi2 Thermoelectric Materials
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...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2014-09-01
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| Series: | Materials |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1996-1944/7/9/6304 |
| Summary: | 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. |
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| ISSN: | 1996-1944 |