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Title:Concentration-dependent thermal duality of hafnium carbide nanofluid for heat transfer applications : a mode mismatched thermal lens study
Authors:ID Gokul, Vijayakumar (Author)
ID Swapna, Mohanachandran Nair Sindhu (Author)
ID Raj, Vimal (Author)
ID Saritha Devi, H. V. (Author)
ID Sankararaman, Sankaranarayana Iyer (Author)
Files: This document has no files that are freely available to the public. This document may have a physical copy in the library of the organization, check the status via COBISS. Link is opened in a new window
Language:English
Work type:Unknown
Typology:1.01 - Original Scientific Article
Organization:UNG - University of Nova Gorica
Abstract:he mode mismatch dual-beam thermal lens technique is a sensitive tool for studying the nanofuids’ thermal difusivity in thermal engineering. The work reports the low-temperature green synthesis of hafnium carbide (HfC) using rice four as a natural carbon precursor and its potential in heat transfer nanofuids by studying the concentration-dependent thermal difusivity. The structure characterisations confirm the formation of HfC, whose refractory nature is revealed through the high thermal stability observed in the thermogravimetric analysis. The Tauc plot analysis shows direct bandgap energy of 2.92 eV. The fuorescence study suggests bluish-pink emission with CIE coordinates (0.271, 0.263). The existence of the critical concentration of HfC in the nanofuid decides its suitability for heat transfer or heat trap applications indicating a concentration-dependent thermal duality. Thus, the study is signifcant as it overcomes the major drawbacks of the existing methods of the synthesis of refractory HfC, using toxic chemical and costly equipment for heat transfer applications.
Keywords:hafnium carbide, hydrothermal synthesis, rice flour, thermal lens spectroscopy
Year of publishing:2021
Number of pages:str. 1-12
Numbering:Vol. 42, iss. 7
PID:20.500.12556/RUNG-7464 New window
COBISS.SI-ID:113762563 New window
UDC:53
ISSN on article:0195-928X
DOI:10.1007/s10765-021-02859-0 New window
NUK URN:URN:SI:UNG:REP:8M0NZ6NV
Publication date in RUNG:04.07.2022
Views:1369
Downloads:0
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Record is a part of a journal

Title:International journal of thermophysics
Shortened title:Int. j. thermophys.
Publisher:Plenum Press
ISSN:0195-928X
COBISS.SI-ID:512518169 New window

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