Thermal conductivity of flake-shaped iron particles based magnetorheological suspension: Influence of nano-magnetic particle concentration

Upadhyay, R. V.; Pisuwala, Mujiba S.; Parekh, Kinnari; Raj, K.

doi:10.1016/j.jmmm.2020.166633

Cited by 6 publications

(4 citation statements)

References 16 publications

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“…Because of the importance of magnetization and magnetic saturation of these microparticles, different grades and shapes of CIPs with 15–40% vol. have been used (Upadhyay et al, 2020). CIP is a 97% pure iron powder with unique spherical morphology, high purity, and high magnetic saturation by the thermal decomposition of Iron Pentacarbonyl (Fe(CO) 5 ).…”

Section: Dispersed Particlesmentioning

confidence: 99%

The effect of microparticles/nanoparticles surface modification on the magnetorheological fluid properties: A review

Rabbani

Hajinajaf

Shariaty-Niassar

2023

Journal of Intelligent Material Systems and Structures

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Magnetorheological fluids are considered smart materials since their properties change significantly when exposed to a magnetic field, making them interesting for a variety of industries. These fluids are composed of three main components: dispersed particles, carrier fluid, and additives. The latter of which has been the subject of various studies. Therefore, this paper reviews the characteristics and parameters of the particles dispersed in additives and their impact on fluid rheological properties and stability. Also, the surface modification of magnetic and non-magnetic micro and nanoparticles have been investigated. A detailed review of previous studies has been carried out to examine the effects of various parameters such as types of coatings, coating layers, coating thickness, density change, and change in magnetic saturation, on the stability and rheological properties of MR fluids.

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Section: Dispersed Particlesmentioning

confidence: 99%

The effect of microparticles/nanoparticles surface modification on the magnetorheological fluid properties: A review

Rabbani

Hajinajaf

Shariaty-Niassar

2023

Journal of Intelligent Material Systems and Structures

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“…Magnetic fluids were typically based on dispersed spherical nanoparticles. However, in recent years, it has been discovered that during the preparation process, the spherical nanoparticles could be formed into rigid bodies, giving rise to a unique magnetic fluid. − This magnetic fluid displayed a large difference in MR effect from traditional magnetic fluids . Depending on the shape of rigid bodies, magnetic fluids based on the nanosphere ’ s rigid bodies could be divided into different categories, such as chains, sheets, cubes, etc.…”

Section: Introductionmentioning

confidence: 99%

Nanosphere Chain Model of Magnetic Fluid and Its Dynamic Performance

Wang,

Liu,

Lian

et al. 2024

Langmuir

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The magnetorheological effect is a critically important mechanical property of magnetic fluids. Accurately capturing the macroscopic properties of magnetorheological fluids with elongated particle forms, such as nanosphere chains, remains a challenging task, particularly due to the complexities arising from particle asymmetry. Traditional particle dynamics primarily utilize spherical particles as computational units, but this approach can lead to significant inaccuracies, especially when analyzing nonspherical magnetorheological fluids, due to the neglect of particle asymmetry. In this work, an advanced particle dynamics model has been developed by integrating the rotation and collision of these asymmetric particles, specifically tailored for the configuration of nanosphere chains. This model exhibits a significant reduction in error by a factor of 3.883, compared to conventional particle models. The results demonstrate that alterations in the geometric characteristics of magnetic nanosphere chains can cause changes in mesoscopic structures and magnetic potential energy, thereby influencing the mechanical properties at the macroscopic level. This work has developed an accurate mesoscopic simulation method for calculating chain-type magnetorheological fluids, establishing a connection between mesoscopic structures and macroscopic properties, and unveiling the tremendous potential for accelerating the design of next-generation magnetic fluids using this approach.

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“…Green synthesis is also beneficial in minimizing the production of residual waste from utilization of hazardous chemical reagents [6,22]. Green synthesis using plant extract from green tea, kurkuma, and lantana fir leaves produced hematite with rod, hexagonal, cone cube, and flake structures [6,23]. However, a high concentration of plant extract was required for rearrangement of the molecules to form uniform structure.…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis of Hexagonal Hematite (α-Fe2O3) Flakes Using Pluronic F127-Gelatin Template for Adsorption and Photodegradation of Ibuprofen

et al. 2021

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Hematite (α-Fe2O3) with uniform hexagonal flake morphology has been successfully synthesized using a combination of gelatin as natural template with F127 via hydrothermal method. The resulting hematite was investigated as adsorbent and photocatalyst for removal of ibuprofen as pharmaceutical waste. Hexagonal flake-like hematite was obtained following calcination at 500 °C with the average size was measured at 1–3 µm. Increasing the calcination temperature to 700 °C transformed the uniform hexagonal structure into cubic shape morphology. Hematite also showed high thermal stability with increasing the calcination temperatures; however, the surface area was reduced from 47 m2/g to 9 m2/g. FTIR analysis further confirmed the formation Fe-O-Fe bonds, and the main constituent elements of Fe and O were observed in EDX analysis for all samples. α-Fe2O3 samples have an average adsorption capacity of 55–25.5 mg/g at 12–22% of removal efficiency when used as adsorbent for ibuprofen. The adsorption capacity was reduced as the calcination temperatures increased due to the reduction of available surface area of the hexagonal flakes after transforming into cubes. Photocatalytic degradation of ibuprofen using hematite flakes achieved 50% removal efficiency; meanwhile, combination of adsorption and photocatalytic degradation further removed 80% of ibuprofen in water/hexane mixtures.

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Thermal conductivity of flake-shaped iron particles based magnetorheological suspension: Influence of nano-magnetic particle concentration

Cited by 6 publications

References 16 publications

The effect of microparticles/nanoparticles surface modification on the magnetorheological fluid properties: A review

The effect of microparticles/nanoparticles surface modification on the magnetorheological fluid properties: A review

Nanosphere Chain Model of Magnetic Fluid and Its Dynamic Performance

Green Synthesis of Hexagonal Hematite (α-Fe2O3) Flakes Using Pluronic F127-Gelatin Template for Adsorption and Photodegradation of Ibuprofen

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