The Effect of Sr-CoFe2O4 Nanoparticles with Different Particles Sized as Additives in CIP-Based Magnetorheological Fluid
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ID: 268846
2021
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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.
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| Authors | Kacuk Cikal Nugroho;Ubaidillah Ubaidillah;Retna Arilasita;Margono Margono;Bambang Hari Priyambodo;Budi Purnama;Saiful Amri Mazlan;Seung-Bok Choi;Nugroho, Kacuk Cikal;Ubaidillah, Ubaidillah;Arilasita, Retna;Margono, Margono;Priyambodo, Bambang Hari;Purnama, Budi;Mazlan, Saiful Amri;Choi, Seung-Bok; |
| Journal | Materials (Basel, Switzerland) |
| Year | 2021 |
| DOI |
10.3390/ma14133684
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| URL | |
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