Enhancement of the thermal conductivity of a near room temperature magnetocaloric composite using graphene-like hybrid nanosheets derived from organic waste
- Title
- Enhancement of the thermal conductivity of a near room temperature magnetocaloric composite using graphene-like hybrid nanosheets derived from organic waste
- Creator
- Goswami D.; Jana P.P.; Potnis G.; Kumbhakar P.; Ganguly D.; Chattopadhyay S.; Das J.
- Description
- Polymer matrix composites, fabricated to counter the inherent brittleness of magnetocaloric Heusler alloys, suffer from low thermal conductivity. Here, we demonstrate a low-cost, scalable route towards developing thermally conductive, mechanically robust near-room-temperature magnetocaloric composites by incorporating graphene-like hybrid nanostructures chemically synthesized from discarded sugarcane. Micron-sized particles obtained by manually grinding Ni50.2Mn36.7Sn13 ribbons possessing a strong magnetostructural transformation near room-temperature were chosen as the active magnetocaloric fillers. Both the functional fillers were incorporated into a polysulfone matrix by solution casting. Large values of isothermal entropy change ? 0.43 and -0.46 J/kg.K were observed for a ?H = 2T, driven by two successive first and second-order transformations within the alloy fillers. Additionally, an enhanced value of the in-plane thermal conductivity ? 3.06 0.4 W/m.K was observed in the composites owing to the formation of efficient thermal bridges/pathways by the graphene-like hybrid nanostructures, rendering them promising candidates for magnetic refrigeration applications. 2023 Acta Materialia Inc.
- Source
- Materialia, Vol-32
- Date
- 2023-01-01
- Publisher
- Elsevier B.V.
- Subject
- Composites; Heusler alloys; Magnetocaloric effect; Martensitic transformation; Thermal conductivity
- Coverage
- Goswami D., School of Nano-science and Technology, Indian Institute of Technology Kharagpur, West Bengal, Kharagpur, 721 302, India; Jana P.P., Materials Science and Technology Division, CSIR- National Institute for Interdisciplinary Science and Technology, Kerala, Thiruvananthapuram, 695019, India, Academy of Scientific and Innovative Research (AcSIR), Uttar Pradesh, Ghaziabad, 201002, India; Potnis G., Department of Metallurgical and Materials Engineering, Indian Institute of Technology Kharagpur, West Bengal, Kharagpur, 721 302, India; Kumbhakar P., Department of Metallurgical and Materials Engineering, Indian Institute of Technology Kharagpur, West Bengal, Kharagpur, 721 302, India, Department of Physics and Electronics, Christ University, Karnataka, Bangalore, 560 029, India; Ganguly D., Rubber Technology Center, Indian Institute of Technology Kharagpur, West Bengal, Kharagpur, 721 302, India; Chattopadhyay S., School of Nano-science and Technology, Indian Institute of Technology Kharagpur, West Bengal, Kharagpur, 721 302, India, Rubber Technology Center, Indian Institute of Technology Kharagpur, West Bengal, Kharagpur, 721 302, India; Das J., School of Nano-science and Technology, Indian Institute of Technology Kharagpur, West Bengal, Kharagpur, 721 302, India, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Kharagpur, West Bengal, Kharagpur, 721 302, India
- Rights
- Restricted Access
- Relation
- ISSN: 25891529
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Goswami D.; Jana P.P.; Potnis G.; Kumbhakar P.; Ganguly D.; Chattopadhyay S.; Das J., “Enhancement of the thermal conductivity of a near room temperature magnetocaloric composite using graphene-like hybrid nanosheets derived from organic waste,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 27, 2025, https://archives.christuniversity.in/items/show/13927.