An overview of nanoparticles utilization in magnetorheological materials

Leong, Siti Asma’ Nikmat; Mazlan, Saiful Amri; Mohamad, Norzilawati; Aziz, Siti Aishah Abdul; Ubaidillah, Ubaidillah

doi:10.1063/1.4941463

Cited by 8 publications

(4 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Even so, it does not bring any significant enhancement in terms of yield stress and viscoelastic properties of MRG. The reason for that is because, as stated by Leong et al [13] the CIPs chain in MRG does not affect by the employment of nanoparticle additives. Thus, nanoparticles addition does not contribute to the formation of strong and stable chain structures in MRG.…”

Section: Introductionmentioning

confidence: 90%

Field-Dependent Viscoelastic Properties of Graphite-based Magnetorheological Grease

Nasir

Nurhazimah²,

Mohamad³

et al. 2022

Int. J. Automot. Mech. Eng.

View full text Add to dashboard Cite

This paper highlights the effect of graphite on the dynamic viscoelastic properties of magnetorheological grease (MRG). Two types of MRG namely MRG and graphite-MRG, GMRG with 0 wt.% and 10 wt. % of graphite respectively was synthesized by using a mechanical stirrer. The rheological properties of both sample at various magnetic field strength from 0 to 0.603 T was analyzed via rheometer under oscillatory mode with strain ranging from 0.001 to 1% with fixed frequency at 1 Hz for strain sweep and frequency ranging from 0.1 to 80 Hz at a constant strain of 0.01 % for frequency sweep. Based on the result obtained, the value of storage and loss modulus are dependent on the graphite content. A high value of storage modulus was achieved in the GMRG sample at all applied magnetic field strengths within all frequency ranges. These phenomena related to the contribution of graphite to forming the chain structure with CIPs and offered a more stable and stronger structure as compared with MRG. Moreover, the reduction in the value of loss modulus in GMRG was noticed compared to MRG at on-state conditions reflected by the stable structure obtained by GMRG. Lastly, both samples displayed a strong solid-like (elastic) behavior due to the high value of storage modulus, G’ acquired compared to loss modulus, G’’ at all frequency ranges. Therefore, the utilization of graphite in MRG can be used in wide applications such as brake and seismic dampers.

show abstract

Section: Introductionmentioning

confidence: 90%

Field-Dependent Viscoelastic Properties of Graphite-based Magnetorheological Grease

Nasir

Nurhazimah²,

Mohamad³

et al. 2022

Int. J. Automot. Mech. Eng.

View full text Add to dashboard Cite

show abstract

“…Many methods were studied to enhance sedimentation stability, such as modifying morphology magnetic particles [5]- [13] and introducing nanoparticles as addictive [14]- [21] on MR fluids. Among those two methods, nanoparticles addition was the simplest and fastest way not only to increase sedimentation stability but also enhance the rheological properties of MR fluids [22]. Zhen et al (2018) [23] investigate the effect of CoFe2O4 nano addictive in the same concentration of CI particles in silicon oil.…”

Section: Introductionmentioning

confidence: 99%

Effect of Hard Magnetic CoFe<sub>2</sub>O<sub>4</sub> Nanoparticles Additives on Improving Rheological Properties and Dispersion Stability of Magnetorheological Fluids

Nugroho

Sarifuddin

Purnama

et al. 2020

KEM

View full text Add to dashboard Cite

Increasing dispersion stability is the main issue in recent research at magnetorheological (MR) fluids. The presentation of nanoparticle addictive in MR fluids is an effective method not only to increase dispersion stability but also increasing performance in MR fluids. In this study, the effect of hard magnetic CoFe2O4 nanoparticles addition on rheological properties and dispersion stabilization had been studied. Rheological properties were investigated using a rheometer at room temperature. The result showed that the addition of CoFe2O4 nanoparticles 1wt% in particles of MR fluids were improving the shear stress and viscosity of MR fluids. Both MR fluids with and without nanoadditives behaving like a Newtonian fluid at the off-state condition and act like Bingham fluid at the on-state condition. Moreover, MR fluid with CoFe2O4 additives had a higher sedimentation ratio than MR fluids without additives.

show abstract

“…In contrary, the best method to increase the rheological properties is by introducing magnetic nanoparticles as additives into the MRF. Under the influence of magnetic fields, these nanoparticles would fill the gap between magnetic particles of MRF and increasing the shear stress [26]. However, research on the nanoparticles in MRF as additives is rather limited.…”

Section: Introductionmentioning

confidence: 99%

The effect of Mn_xCo_(1-x)Fe₂O₄ with x = 0, 0.25 and 0.5 as nanoparticles additives in magnethorheological fluid

Nugroho

Ubaidillah

Purnama

et al. 2020

Smart Mater. Struct.

View full text Add to dashboard Cite

This study focused on the effect of manganese substituted cobalt ferrite (Mn x Co 1-x Fe 2 O 4 ) nanoparticles with different mole ratios (x = 0, 0.25 and 0.5) in magnetorheological fluids (MRF). The nanoparticles were synthesized using co-precipitation method. The irregularly-spherical form of the nanoparticles was observed/confirmed using a field emission scanning (FESEM) microscope. The vibrating sample magnetometer (VSM) was performed to analyze the effect of nanoparticles in MRF on their magnetic properties. The VSM test results show that the nanoparticles have a negative effect on the magnetic properties of MRF. The higher magnetic saturation of nanoparticles will reduce more magnetic saturation in MRF. This phenomenon shows that the direction of the magnetic field from the cobalt manganese ferrite has the opposite direction to MRF. It is also identified that the field-dependent rheological properties of MRF show that the addition of nanoparticles increases the yield stress of MRF results except for Mn 0.5 Co 0.5 Fe 2 O 4 which leads to the reduction of the yield stress of MRF.

show abstract

An overview of nanoparticles utilization in magnetorheological materials

Cited by 8 publications

References 29 publications

Field-Dependent Viscoelastic Properties of Graphite-based Magnetorheological Grease

Field-Dependent Viscoelastic Properties of Graphite-based Magnetorheological Grease

Effect of Hard Magnetic CoFe<sub>2</sub>O<sub>4</sub> Nanoparticles Additives on Improving Rheological Properties and Dispersion Stability of Magnetorheological Fluids

The effect of Mn_xCo_(1-x)Fe₂O₄ with x = 0, 0.25 and 0.5 as nanoparticles additives in magnethorheological fluid

Contact Info

Product

Resources

About

An overview of nanoparticles utilization in magnetorheological materials

Cited by 8 publications

References 29 publications

Field-Dependent Viscoelastic Properties of Graphite-based Magnetorheological Grease

Field-Dependent Viscoelastic Properties of Graphite-based Magnetorheological Grease

Effect of Hard Magnetic CoFe<sub>2</sub>O<sub>4</sub> Nanoparticles Additives on Improving Rheological Properties and Dispersion Stability of Magnetorheological Fluids

The effect of MnxCo(1-x)Fe2O4 with x = 0, 0.25 and 0.5 as nanoparticles additives in magnethorheological fluid

Contact Info

Product

Resources

About

The effect of Mn_xCo_(1-x)Fe₂O₄ with x = 0, 0.25 and 0.5 as nanoparticles additives in magnethorheological fluid