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Verma, Alok Kumar
- Temperature and Concentration Dependent Acoustical Analysis of MgFe2O4 Nanoparticles-Ethylene Glycol Liquid Suspensions
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Authors
Affiliations
1 Department of Physics, University of Allahabad, Allahabad-211002, IN
1 Department of Physics, University of Allahabad, Allahabad-211002, IN
Source
Journal of Pure and Applied Ultrasonics, Vol 39, No 4 (2017), Pagination: 110-115Abstract
In present work, MgFe2O4-ethylene glycol nanofluids of various concentrations have been synthesized using ultrasonication method. The powdered MgFe2O4 nanoparticles are characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). Particle size distribution of the nanoparticles in the base fluid has also been studied with the help of acoustical particle sizer (APS-100). Temperature dependent ultrasonic velocity, adiabatic compressibility and acoustic impedance at different concentration (0.1, 0.2, 0.5, 1.0 and 2.0 vol%) of MgFe2O4 have been investigated using ultrasonic interferometer. This paper is interested in systematic experimental study on the response of MgFe2O4-ethylene glycol nanofluids to the ultrasonic wave propagation. The main focus of the study is to understand the particle-fluid interaction and particle-particle interaction as function of concentration and temperature. The obtained results are discussed in correlation with the suitability of the present nanofluids for industrial application.Keywords
Acoustical Particle Sizer, Nanofluids, MgFe2O4, Ultrasonic Velocity.Full Text
References
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- Non-Destructive Characterization of CaFe2O4-Ethylene Glycol Based Nanofluids
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Authors
Affiliations
1 Department of Physics, University of Allahabad, Allahabad-211002, IN
1 Department of Physics, University of Allahabad, Allahabad-211002, IN
Source
Journal of Pure and Applied Ultrasonics, Vol 41, No 1 (2019), Pagination: 9-13Abstract
In the present work, CaFe2O4 nanoparticles have been synthesized using sol-gel method. The prepared nanoparticles have been characterized using X-Ray diffraction (XRD) and transmission electron microscopy (TEM). CaFe2O4 nanoparticles have been dispersed in the ethylene glycol using high power ultrasonicator to prepare CaFe2O4-ethylene glycol based nanofluids of different volume fraction (viz. 0.1 vol%, 0.2 vol%, 0.5 vol%, and 1.0 vol%). Particle size distribution of synthesized nanofluids has been investigated by acoustical particle sizer (APS-100). Frequency and concentration dependent ultrasonic attenuations in the nanofluids have been measured by APS-100. A comparative study of the results, obtained by XRD, TEM and APS, has been done. Various factors responsible for ultrasonic attenuation and their correlation have been made to understand the inter-particle and intra-particle interactions.Keywords
Nanofluids, Ultrasonic Attenuation, Acoustical Particle Sizer, Particle Size Distribution.Full Text
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