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Experimental investigation on heat transfer rate of Co–Mn ferrofluids in external magnetic field Cover

Experimental investigation on heat transfer rate of Co–Mn ferrofluids in external magnetic field

Materials Science-Poland
Volume 34 (2016): Issue 2 (June 2016)
By: ,  ,   and    
Open Access
|May 2016
Figures & tables

Figures & Tables

Fig. 1

Schematic setup for the investigation of heat transfer rate of Co–Mn ferrofluids in external magnetic field.

Fig. 2

Indexed X-ray diffraction patterns of (a) CoFe2O4, (b) Co0.7Mn0.3Fe2O4, (c) Co0.5Mn0.5Fe2O4, (d) Co0.3Mn0.7Fe2O4 and (e) MnFe2O4.

Table 1

Summary of lattice constant values [ Å] for Co1–xMnxFe2O4 with x varying from 0.0, 0.3, 0.5, 0.7 and 1.0.

NoSampleLattice constant [Å]
1CoFe2O48.397
2Co0.7Mn0.3Fe2O48.424
3Co0.5Mn0.5Fe2O4 8.421
4Co0.3Mn0.7Fe2O48.466
5MnFe2O48.493
Fig. 3

Magnetization curves of CoFe2O4, Co0.7Mn0.3Fe2O4, Co0.5Mn0.5Fe2O4, Co0.3Mn0.7Fe2O4 and MnFe2O4 at room temperature.

Fig. 4

SEM images of manganese substituted CoFe2O4 nanoparticles.

Fig. 5

(a) TG and (b) DTA results of manganese substituted CoFe2O4 nanoparticles with x = 0.0, 0.3 and 0.5.

Fig. 6

Heat transfer rate of transformer oil based CoFe2O4 ferrofluid at an applied external magnetic fields for I = 1.8 A and 2.7 A.

Fig. 7

Heat transfer rate of transformer oil based Co0:5Mn0:5 Fe2O4 ferrofluid at an applied external magnetic fields for I = 1.8 A and 2.7 A.

Fig. 8

Heat transfer rate of transformer oil based MnFe2O4 ferrofluid at an applied external magnetic fields for I = 1.8 A and 2.7 A.

DOI: https://doi.org/10.1515/msp-2016-0048 | Journal eISSN: 2083-134X (formerly 2083-124X) | Journal ISSN: 2083-1331
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Language: English
Page range: 427 - 436
Submitted on: Nov 25, 2015
Accepted on: Feb 28, 2016
Published on: May 24, 2016
Published by: Wroclaw University of Science and Technology
In partnership with: Paradigm Publishing Services
Keywords:
magnetic nanoparticles,
coprecipitation,
magnetic fluids,
rate of heat transfer,
carrier fluid
Related subjects:
Materials sciences,
Materials sciences, other,
Nanomaterials,
Functional and smart materials,
Materials characterization and properties

© 2016 M. Margabandhu, S. Sendhilnathan, S. Senthilkumar, K. Hirthna, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Volume 34 (2016): Issue 2 (June 2016)
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