Effect of nano-silica-particle additive on magneto-rheological behavior

Zhang, Yanan; Jiang, Jile; Ouyang, Chuke; Wen, Gang; Meng, Yonggang; Tian, Yu

doi:10.1007/s00397-022-01371-y

Cited by 3 publications

(4 citation statements)

References 57 publications

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“…Once the content exceeds a critical value, these parameters will change in an opposite direction that is not beneficial for improving dynamic yield strength. [ 33–36 ]…”

Section: Resultsmentioning

confidence: 99%

“…Once the content exceeds a critical value, these parameters will change in an opposite direction that is not beneficial for improving dynamic yield strength. [33][34][35][36] In the following, the relationship between sedimentation stability and zero-field viscosity of Micro-Nano bidisperse MR fluids and changes in interactions are elucidated. The SEM images of the CIPs and CIPs-FeCo bidisperse system are presented in Figure 3a,d.…”

Section: Enhancement Mechanism Analysis Of Micro-nano Bidisperse Mr F...mentioning

confidence: 99%

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Balanced Devil Triangle: A Satisfactory Comprehensive Performance Magnetorheological Fluids with Cross‐Scale Particles

Du,

Zhao,

Liu

et al. 2023

Adv Funct Materials

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Magnetorheological (MR) fluids are magnetic responsive smart materials that are widely used in real‐time damping adjustment devices. However, a major challenge for MR fluids is balancing the constraints relationship among various key performances. This study demonstrates that by utilizing home‐made high saturation magnetization (208.0 emu g−1) nanoparticles as the second component in the preparation of cross‐scale bidisperse MR fluids, the shortcomings of monodisperse micron particles performance can be compensated, effectively balancing the relationship between various performances. This is attributed to the fact that the addition of nanoparticles enhances the density of chain structures under an applied magnetic field, while reducing the overall particle density without a magnetic field. By replacing part of micron particles with nanoparticles, the phenomenon of significant increase in zero‐field viscosity caused by the direct introduction of nanoparticles is avoided. The optimal content of nanoparticles in MR fluids is preliminarily explored, and the results indicate that Micro‐Nano bidisperse MR fluids exhibit a high dynamic yield strength (58.3 kPa when 436 kA m−1), excellent sedimentation stability (82.6% when 7 days), suitable zero‐field viscosity (1.25 Pa s when 100 s−1), and ideal reversibility. Most importantly, the simple preparation method adds significant engineering application value to these MR fluids.

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“…Once the content exceeds a critical value, these parameters will change in an opposite direction that is not beneficial for improving dynamic yield strength. [ 33–36 ]…”

Section: Resultsmentioning

confidence: 99%

Section: Enhancement Mechanism Analysis Of Micro-nano Bidisperse Mr F...mentioning

confidence: 99%

Balanced Devil Triangle: A Satisfactory Comprehensive Performance Magnetorheological Fluids with Cross‐Scale Particles

Du,

Zhao,

Liu

et al. 2023

Adv Funct Materials

View full text Add to dashboard Cite

show abstract

“…A detailed diagram of this apparatus can be found in the literature. 22 The ball samples, with a diameter of 12.7 mm, and the plate sample, with dimensions of 14.92 mm in length, 5.92 mm in width, and 3.1 mm in thickness, were all fabricated from AISI 52100 steel. This type of steel is renowned for its favorable tribological properties.…”

Section: Experimental and Simulated Proceduresmentioning

confidence: 99%

“…To obtain the Stribeck curves of PAO and PAO-OA, a friction ball/three-plate friction apparatus (MCR 301, Anton Parr, Austria) was utilized. A detailed diagram of this apparatus can be found in the literature . The ball samples, with a diameter of 12.7 mm, and the plate sample, with dimensions of 14.92 mm in length, 5.92 mm in width, and 3.1 mm in thickness, were all fabricated from AISI 52100 steel.…”

Section: Experimental and Simulated Proceduresmentioning

confidence: 99%

Induced Decomposition and Slip Interface Transformation of Oleic Acid Enables Ultralow Wear in Boundary Lubrication

Wang,

Gao,

Wang

et al. 2024

Langmuir

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The tribological behavior of carboxylic acids, especially oleic acid, in boundary lubrication conditions is a subject of interest. This study presents the results of four-ball tribological tests conducted under varying contact pressures and sliding speeds. The findings reveal a critical turning speed within a confined zone, which causes a significant change in the frictional performances of oleic acid, leading to the formation of an ultralow wear tribofilm. This tribofilm, predominantly composed of oxyhydrogen compounds and hydrocarbons with more than five carbon atoms, is generated by the molecular action of oleic acid. Reactive nonequilibrium molecular dynamics simulations demonstrate that the shear speed-dependent decomposition modes of oleic acid and the transformation of the lubrication slip interface are the fundamental processes underlying the formation of this ultralow-wear boundary tribofilm.

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A review on the magnetorheological materials and applications

Yang,

Pan,

Wang

2024

JAE

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Magnetorheological materials refer to field-response smart materials whose properties are controllable with a magnetic field, including fluid, grease, elastomer, and gel. The unique magnetorheological effect exhibited by these smart materials is a physical phenomenon where physics and engineering intersect and has extensive application prospects in modern machinery. In electro-mechanical systems, magnetorheological materials offer a superior design method for mechanical devices used in the fields of transmission, damping, and braking. It is important to control the magnetorheological materials for advancing the design philosophy of modern electro-mechanical devices. Hence, this paper presents a recent progressive review on the fundamentals of magnetorheological materials and numerous applications. Firstly, an introduction to the magnetorheological effect and different types of magnetorheological materials are presented in this review. Then, the individual and coupled effects of sedimentation, temperature, and magnetic field on magnetorheological materials are discussed. Finally, magnetorheological materials-based devices have been extensively reviewed, including actuator, clutch, damper, brake, pump, valve, and robot, thus aiming to provide useful information for facilitating the design of complex electro-mechanical systems.

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Effect of nano-silica-particle additive on magneto-rheological behavior

Cited by 3 publications

References 57 publications

Balanced Devil Triangle: A Satisfactory Comprehensive Performance Magnetorheological Fluids with Cross‐Scale Particles

Balanced Devil Triangle: A Satisfactory Comprehensive Performance Magnetorheological Fluids with Cross‐Scale Particles

Induced Decomposition and Slip Interface Transformation of Oleic Acid Enables Ultralow Wear in Boundary Lubrication

A review on the magnetorheological materials and applications

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