Colloid and Polymer Science

, Volume 296, Issue 7, pp 1145–1156 | Cite as

Effects of fumed silica weight fraction on rheological properties of magnetorheological polishing fluids

  • Jinhuan Xu
  • Jianyong Li
  • Jianguo Cao
Original Contribution


Magnetorheological (MR) polishing fluids with excellent rheological characteristics are efficient in material removal of workpiece. In this study, fumed silica (FS) was used as thixotropic agent in MR polishing fluid with ten different weight fractions to find the proper additive amount for good rheological and sedimentation properties. The rheological behavior of samples at several additive concentrations was determined by examining flow properties using a rotational rheometer connected to an external magneto-cell. Experimental results showed that, by adding FS to MR polishing fluids, apparent viscosity and yield stress exhibited an obvious increase, while the shear-thinning index decreased sharply. Model fitting showed that all the MR polishing fluids exhibited shear-thinning behavior and followed the Herschel-Bulkley model. Further investigations suggested that 0.5–0.6-wt% FS was the most promising additive proportion for proper rheological and sedimentation properties, while a further increase in FS weight fraction greatly increased apparent viscosity and decreased yield stress undesirably.


Fumed silica Rheological characteristics Magnetorheological Polishing fluid 



This work was financially supported by the Fundamental Research Funds for the Central Universities (M17RC00020).

Compliance with ethical standards

Conflicts of interest

The authors declare that they have no conflict of interest.


  1. 1.
    Kim MW, Han WJ, Kim YH, Choi HJ (2016) Effect of a hard magnetic particle additive on rheological characteristics of microspherical carbonyl iron-based magnetorheological fluid. Colloids Surf A Physicochem Eng Asp 506:812–820CrossRefGoogle Scholar
  2. 2.
    Zhou J, Zhang H, Shao C (2016) Flow and heat transfer performances of dilute magnetorheological fluid flowing through hot micro channel. Int J Heat Mass Transf 107:1035–1043CrossRefGoogle Scholar
  3. 3.
    Park JH, Kwon MH, Park OO (2001) Rheological properties and stability of magnetorheological fluids using viscoelastic medium and nanoadditives. Korean J Chem Eng 18(5):580–585CrossRefGoogle Scholar
  4. 4.
    Liu YD, Hong CH, Choi HJ (2012) Polymeric colloidal magnetic composite microspheres and their magneto-responsive characteristics. Macromol Res 20(12):1211–1218CrossRefGoogle Scholar
  5. 5.
    Jang DS, Liu YD, Kim JH, Choi HJ (2015) Enhanced magnetorheology of soft magnetic carbonyl iron suspension with hard magnetic γ-Fe2O3 nanoparticle additive. Colloid Polym Sci 293:641–647CrossRefGoogle Scholar
  6. 6.
    Jun JB, Uhm SY, Ryu JH, Suh L (2005) Synthesis and characterization of monodisperse magnetic composite particles for magnetorheological fluid materials. Colloids Surf A Physicochem Eng Asp 260:157–164CrossRefGoogle Scholar
  7. 7.
    Fang FF, Choi HJ, Choi WS (2010) Two-layer coating with polymer and carbon nanotube on magnetic carbonyl iron particle and its magnetorheology. Colloid Polym Sci 288:359–363CrossRefGoogle Scholar
  8. 8.
    Yang J, Yan H, Hu Z, Ding D (2016) Viscosity and sedimentation behaviors of the magnetorheological suspensions with oleic acid/dimer acid as surfactants. J Magn Magn Mater 417:214–221CrossRefGoogle Scholar
  9. 9.
    Park JH, Chin BD, Park OO (2001) Rheological properties and stabilization of magnetorheological fluids in a water-in-oil emulsion. J Colloid Interface Sci 240:349–354CrossRefPubMedGoogle Scholar
  10. 10.
    Sadiq A, Shunmugam MS (2009) Investigation into magnetorheological abrasive honing (MRAH). Int J Mach Tool Manu 49:554–560CrossRefGoogle Scholar
  11. 11.
    Jha S, Jain VK (2004) Design and development of the magnetorheological abrasive flow finishing (MRAFF) process. Int J Mach Tool Manu 44:1019–1029CrossRefGoogle Scholar
  12. 12.
    Alam Z, Jha S (2017) Modeling of surface roughness in ball end magnetorheological finishing (BEMRF) process. Wear 374-375:54–62CrossRefGoogle Scholar
  13. 13.
    Wang Y, Zhang Y, Feng Z (2016) Analyzing and improving surface texture by dual-rotation magnetorheological finishing. Appl Surf Sci 360:224–233CrossRefGoogle Scholar
  14. 14.
    Shi F, Dai Y, Peng X, Kang N, Liu Z (2009) Study on the mechanism and arts of magnetorheological finishing (MRF) by Nano-sized diamond abrasives. Guofang Keji Daxue Xuebao 31(4):25–30 (In Chinese)Google Scholar
  15. 15.
    Sidpara A, Jain VK (2012) Theoretical analysis of forces in magnetorheological fluid based finishing process. Int J Mech Sci 56:50–59CrossRefGoogle Scholar
  16. 16.
    Wang YQ, Yin SH, Huang H, Deng GJ (2015) Magnetorheological polishing using a permanent magnetic yoke with straight air gap for ultra-smooth surface planarization. Precis Eng 40:309–317CrossRefGoogle Scholar
  17. 17.
    You W, Peng X, Dai Y (2004) MR fluids for finishing use. Guangxue Jingmi Gongcheng 12(3):330–334 (In Chinese)Google Scholar
  18. 18.
    Qiu Z, Zhang F, Dong S (2002) Research on MR fluids applied to optical glass finishing. Guangxue Jishu 28(6):497–501 (In Chinese)Google Scholar
  19. 19.
    Saraswathamma K, Jha S, Rao PV (2017) Rheological behaviour of magnetorheological polishing fluid for Si polishing materials. Today: Proceedings 4:1478–1491Google Scholar
  20. 20.
    Lee JW, Hong KP, Cho MW, Kwon SH, Choi HJ (2015) Polishing characteristics of optical glass using PMMA-coated carbonyl-iron-based magnetorheological fluid. Smart Mater Struct 24:065002CrossRefGoogle Scholar
  21. 21.
    Lee JW, Hong KP, Kwon SH, Choi HJ, Cho MW (2017) Suspension rheology and magnetorheological finishing characteristics of biopolymer-coated carbonyl iron particles. Ind Eng Chem Res 56:2416–2424CrossRefGoogle Scholar
  22. 22.
    Mrlík M, Ilčíková M, Pavlínek V, Mosnáček J, Peer P, Filip P (2013) Improved thermooxidation and sedimentation stability of covalently-coated carbonyl iron particles with cholesteryl groups and their influence on magnetorheology. J Colloid Interface Sci 396:146–151CrossRefPubMedGoogle Scholar
  23. 23.
    Rodríguez-López J, Castro P, Elvira L, De Espinosa FM (2015) Study of the effect of particle volume fraction on the microstructure of magnetorheological fluids using ultrasound: transition between the strong-link to the weak-link regimes. Ultrasonics 61:10–14CrossRefPubMedGoogle Scholar
  24. 24.
    Viota JL, De Vicente J, Duran JDG, Delgado AV (2005) Stabilization of magnetorheological suspensions by polyacrylic acid polymers. J Colloid Interface Sci 284:527–541CrossRefPubMedGoogle Scholar
  25. 25.
    Ashtiani M, Hashemabadi SH (2015) An experimental study on the effect of fatty acid chain length on the magnetorheological fluid stabilization and rheological properties. Colloids Surf A Physicochem Eng Asp 469:29–35CrossRefGoogle Scholar
  26. 26.
    Hajalilou A, Mazlan SA, Shilan ST, Abouzari-Lotf E (2017) Enhanced magnetorheology of soft magnetic carbonyl iron suspension with binary mixture of Ni-Zn ferrite and Fe3O4 nanoparticle additive. Colloid Polym Sci 295:1499–1510CrossRefGoogle Scholar
  27. 27.
    Yamanaka S, Abe H, Naito M, Fujimoto T, Kuga Y (2012) Colloidal dispersibility of fatty acid-capped iron nanoparticles and its effect on static and dynamic magnetorheological response. Colloids Surf A Physicochem Eng Asp 415:239–246CrossRefGoogle Scholar
  28. 28.
    Li K, Yang S, Li W, Gao Y (2009) Research on stability improvement of Nano-silica on fluid magnetic abrasives. Mech Manag Dev 24(5):14–15 (In Chinese)Google Scholar
  29. 29.
    Hu Z, Yan H, Wang X, Yang J (2012) Effect of thixotropy on tribological properties of magnetorheological fluid. Gongneng Cailiao 43(5):614–617 (In Chinese)Google Scholar
  30. 30.
    Cheng H, Zhang J, Feng J, Guan J, Zhang Q, Qu W (2006) The influence of nanometer lithium magnesium silicate on properties of magnetorheological fluid. Gongneng Cailiao 37(7):1166–1168 (In Chinese)Google Scholar
  31. 31.
    Lim ST, Cho MS, Jang IB, Choi HJ (2004) Magnetorheological characterization of carbonyl iron based suspension stabilized by fumed silica. J Magn Magn Mater 282:170–173CrossRefGoogle Scholar
  32. 32.
    Fang B, Li Y, Wang G (2004) The functional mechanism and properties of fumed silica. Wujiyan Gongye 36(5):50–52 (In Chinese)Google Scholar
  33. 33.
    Yang J, Hua H, Wang X, Hu Z (2014) The effect of SiO2 particle size on the performance of magnetorheological fluids. Gongneng Cailiao 45(4):4095–4099 (In Chinese)Google Scholar
  34. 34.
    Shan L, Tian Y, Jiang J, Meng Y (2015) Effects of pH on shear thinning and thickening behaviors of fumed silica suspensions. Colloids Surf A Physicochem Eng Asp 464:1–7CrossRefGoogle Scholar
  35. 35.
    Gu R, Gong X, Jiang W, Hao L, Xuan S, Zhang Z (2008) Synthesis and rheological investigation of a magnetic fluid using olivary silica-coated iron particles as a precursor. J Magn Magn Mater 320:2788–2791CrossRefGoogle Scholar
  36. 36.
    Zhou GJ, Yan ZY, Xu SX, Zhang KB (2011) Fluid mechanics (Ι)2nd edn. HIGHER EDUCATION PRESS, Beijing, pp 21–25Google Scholar
  37. 37.
    Barthel H, Dreyer M, Gottschalk-Gaudig T, Litvinov V, Nikitina E (2015) Fumed silica – rheological additive for adhesives, resins, and paints. Macromol Symp 187(1):573–584CrossRefGoogle Scholar
  38. 38.
    Zheng Z, Song Y and Zheng Q (2008) Interfacial Structure and Rheology of Fumed Silica Filled Polar Oligomer Nanocomposites. Gaofenzi Xuebao (3):429–453Google Scholar
  39. 39.
    Raghavan SR, Walls HJ, Khan SA (2000) Rheology of silica dispersions in organic liquids: new evidence for solvation forces dictated by hydrogen bonding. Langmuir 16(21):7920–7930CrossRefGoogle Scholar
  40. 40.
    Richter L, Zipser L, Lange U (2001) Properties of magnetorheological fluids. Sensors and Materials 13:385–397Google Scholar
  41. 41.
    Wagner NJ, Brady JF (2009) Shear thickening in colloidal dispersions. Phys Today 62:27–32CrossRefGoogle Scholar
  42. 42.
    Brown E, Jaeger HM (2011) Through thick and thin. Science 333:1230–1231CrossRefPubMedGoogle Scholar
  43. 43.
    Maranzano BJ, Wagner NJ (2001) The effects of particle size on reversible shear thickening of concentrated colloidal dispersions. J Chem Phys 114(23):10514–10527CrossRefGoogle Scholar
  44. 44.
    Mohebi M, Jamasbi N, Liu J (1996) Simulation of the formation of nonequilibrium structures in magnetorheological fluids subject to an external magnetic field. Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics 54(5):5407–5413PubMedGoogle Scholar
  45. 45.
    Yu K, Cao H, Qian K, Sha X, Chen Y (2012) Shear-thickening behavior of modified silica nanoparticles in polyethylene glycol. J Nanopart Res 14:747–755CrossRefGoogle Scholar
  46. 46.
    Jiang WQ, Ye F, He QY, Gong XL, Feng JB (2014) L. Lu and S. H. Xuan. J Colloid Interface Sci 413:8–16CrossRefPubMedGoogle Scholar
  47. 47.
    Liu XQ, Bao RY, Wu XJ, Yang W, Xie BH, Yang MB (2015) Temperature induced gelation transition of a fumed silica/PEG shear thickening fluid. RSC Adv 5(24):18367–18374CrossRefGoogle Scholar
  48. 48.
    Bossis G, Brady JF (1989) The rheology of Brownian suspensions. J Chem Phys 91:1866–1874CrossRefGoogle Scholar
  49. 49.
    Wu XJ, Wang Y, Wang M, Yang W, Xie BH, Yang MB (2012) Structure of fumed silica gels in dodecane: enhanced network by oscillatory shear. Colloid Polym Sci 290(2):151–161CrossRefGoogle Scholar

Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.School of Mechanical, Electronic and Control EngineeringBeijing Jiaotong UniversityBeijingChina
  2. 2.Key Laboratory of Vehicle Advanced Manufacturing, Measuring and Control TechnologyMinistry of EducationBeijingChina

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