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The effect of sr-cofe2o4 nanoparticles with different particles sized as additives in cip-based magnetorheological fluid

Nugroho, K. C. and Ubaidillah, U. and Arilasita, R. and Margono, M. and Priyambodo, B. H. and Purnama, B. and Mazlan, S. A. and Choi, S. B. (2021) The effect of sr-cofe2o4 nanoparticles with different particles sized as additives in cip-based magnetorheological fluid. Materials, 14 (13). ISSN 1996-1944

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Official URL: http://dx.doi.org/10.3390/ma14133684

Abstract

This study investigated the effect of adding strontium (Sr)-doped cobalt ferrite (CoFe2O4) nanoparticles in carbonyl iron particle (CIP)-based magnetorheological fluids (MRFs). Sr-CoFe2O4 nanoparticles were fabricated at different particle sizes using co-precipitation at calcination temperatures of 300 and 400◦C. Field emission scanning electron microscopy (FESEM) was used to evaluate the morphology of the Sr-CoFe2O4 nanoparticles, which were found to be spherical. The average grain sizes were 71–91 nm and 118–157 nm for nanoparticles that had been calcinated at 300 and 400◦C, respectively. As such, higher calcination temperatures were found to produce larger-sized Sr-CoFe2O4 nanoparticles. To investigate the rheological effects that Sr-CoFe2O4 nanoparticles have on CIP-based MRF, three MRF samples were prepared: (1) CIP-based MRF without nanoparticle additives (CIP-based MRF), (2) CIP-based MRF with Sr-CoFe2O4 nanoparticles calcinated at 300◦C (MRF CIP+Sr-CoFe2O4-T300), and (3) CIP-based MRF with Sr-CoFe2O4 nanoparticles calcinated at 400◦C (MRF CIP+Sr-CoFe2O4-T400). The rheological properties of these MRF samples were then observed at room temperature using a rheometer with a parallel plate at a gap of 1 mm. Dispersion stability tests were also performed to determine the sedimentation ratio of the three CIP-based MRF samples.

Item Type:Article
Uncontrolled Keywords:nano-additives, particle sedimentation, strontium cobalt ferrite
Subjects:T Technology > T Technology (General)
Divisions:Malaysia-Japan International Institute of Technology
ID Code:94871
Deposited By: Narimah Nawil
Deposited On:29 Apr 2022 21:54
Last Modified:29 Apr 2022 21:54

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