Fabrication, Characterization and Thermophysical Property Evaluation of SiC Nanofluids for Heat Transfer Applications

• DOI: 10.1007/bf03353782
• Publication Date: 2014-10-15T19:00:02Z
• Authors: Nader Nikkam; Mohsin Saleemi; Ehsan B. Haghighi; Morteza Ghanbarpour; Rahmatollah Khoda...; Mamoun Muhammed; Björn Palm; Muhammet S. Toprak
• Keywords: Zeta potential

Abstract Nanofluids (NFs) are nanotechnology-based colloidal suspensions fabricated by suspending nanoparticles (NPs) in a base liquid. These fluids have shown potential to improve the heat transfer properties of conventional fluids. In this study we report detail on fabrication, characterization and thermo-physical property evaluation SiC NFs, prepared using NPs with different crystal structures, for applications. For purpose, series NFs containing structure (α-SiC β-SiC) were water (W)/ethylene glycol (EG) mixture (50/50 wt% ratio). Physicochemical NPs/NFs characterized various techniques, such as powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission (TEM), Fouriertransform infrared spectroscopy (FTIR), dynamic light scattering (DLS) Zeta analysis. Thermo-physical including thermal conductivity (TC) viscosity particles (α- β- phase) weremeasured. The results show among all α-SiC more favorable compared β-SiC.The observed difference is attributed combination several factors, (β- vs. α-), sample purity, residual chemicals exhibited SiCNFs. A TC enhancement ∼20% while 14% increased obtained 9 particular type indicating promising capability kind further characteristics investigation.