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    Experimental study on contact angle of water based Si-C nanofluid

    Year: 2021

    Journal: J. Mol. Liq., Volume 332, JUN 15

    Authors: Huminic, Gabriela; Huminic, Angel; Dumitrache, Florian; Fleaca, Claudiu; Morjan, Ion

    Organizations: UEFISCDI Executive Agency for Higher Education, Research, Development and Innovation Funding of Romanian Ministry of Research and Innovation [PN-III-P1-1.2-PCCDI-2017-072, 25PCCDI/2018, PNIII-P2-2.1-PED-2019-4951, 304PED/2020]

    Keywords: Si-C nanofluid; Contact angle; Solid surface; Temperature; Concentration

    The effects of solid surface, concentration and temperature on dynamic angles of water and water based Si-C nanofluid were experimentally investigated. Dynamic advancing and receding contact angles measurements by the Wilhelmy plate technique were performed for three types of solid surfaces (aluminum, copper and stainless steel), five temperatures values of nanofluid (20-50 degrees C) and two nanoparticles concentrations (0.5% and 1.0%). The contact angle of nanofluids decreases with both the increasing temperature and nanoparticles concentration. The values of average contact angles of nanofluids are smaller compared to the base fluid, meaning that the wettability of the nanofluid on all studied solid surfaces is better compared to water. Results revealed that the values of average contact angle of stainless steel/Si-C nanofluid are greater than for Al/Si-C nanofluid and Cu/Si-C nanofluid, which means that Cu/Si-C nanofluid exhibits better wettability than Al/Si-C and SS/Si-C nanofluids. The results of the current study may be contributing to a better understanding of parameters that influence contact angle values. (C) 2021 Elsevier B.V. All rights reserved.
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