Hato, MJChoi, HJSim, HHPark, BORay, SS2011-03-072011-03-072011-02Hato, MJ, Choi, HJ, Sim, HH et al. 2011. Magnetic carbonyl iron suspension with organoclay additive and its magnetorheological properties. Colloids and Surfaces: A Physicochemical and Engineering Aspects, Vol. 377, pp 103–1090927-7757http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6TFR-51SFJW9-8-1&_cdi=5233&_user=958262&_pii=S0927775710007600&_origin=search&_zone=rslt_list_item&_coverDate=03%2F05%2F2011&_sk=996229998&wchp=dGLbVlW-zSkWb&md5=3c44c2c2e039b70a5dff70fd5d72ea3f&ie=/sdarticle.pdfhttp://hdl.handle.net/10204/4892Copyright: 2011 Elsevier. This is a pre print version of the work. The definitive version is published in the Colloids and Surfaces: A Physicochemical and Engineering Aspects, Vol.377, pp 103–109Soft magnetic carbonyl iron (CI) based magnetorheological (MR) fluids containing three different loadings of submicron-sized organoclay were prepared. The MR characteristics were measured via rotational and oscillatory tests, in which the flow curves exhibited a non-Newtonian behavior for all investigated samples. The dynamic yield stress change was measured as a function of magnetic field strength by adopting a linear fit of the relation of log (τy) proportional to log (H), which was originally applied for electrorheological fluids. The viscoelastic performances of the pure CI suspension and the CI/organoclay suspensions showed the existence of a solid-like character. The sedimentation ratio was also investigated to confirm the role of sub-micron organoclay particles on the MR properties, in which the dispersion stability of pure CI was improved with increasing the content of organoclay in the CI suspension.enCarbonyl ironOrganoclayMagnetorheological fluidSedimentationPhysicochemicalEngineeringColloidsSoft magnetic carbonyl ironArticleHato, M., Choi, H., Sim, H., Park, B., & Ray, S. (2011). Magnetic carbonyl iron suspension with organoclay additive and its magnetorheological properties. http://hdl.handle.net/10204/4892Hato, MJ, HJ Choi, HH Sim, BO Park, and SS Ray "Magnetic carbonyl iron suspension with organoclay additive and its magnetorheological properties." (2011) http://hdl.handle.net/10204/4892Hato M, Choi H, Sim H, Park B, Ray S. Magnetic carbonyl iron suspension with organoclay additive and its magnetorheological properties. 2011; http://hdl.handle.net/10204/4892.TY - Article AU - Hato, MJ AU - Choi, HJ AU - Sim, HH AU - Park, BO AU - Ray, SS AB - Soft magnetic carbonyl iron (CI) based magnetorheological (MR) fluids containing three different loadings of submicron-sized organoclay were prepared. The MR characteristics were measured via rotational and oscillatory tests, in which the flow curves exhibited a non-Newtonian behavior for all investigated samples. The dynamic yield stress change was measured as a function of magnetic field strength by adopting a linear fit of the relation of log (τy) proportional to log (H), which was originally applied for electrorheological fluids. The viscoelastic performances of the pure CI suspension and the CI/organoclay suspensions showed the existence of a solid-like character. The sedimentation ratio was also investigated to confirm the role of sub-micron organoclay particles on the MR properties, in which the dispersion stability of pure CI was improved with increasing the content of organoclay in the CI suspension. DA - 2011-02 DB - ResearchSpace DP - CSIR KW - Carbonyl iron KW - Organoclay KW - Magnetorheological fluid KW - Sedimentation KW - Physicochemical KW - Engineering KW - Colloids KW - Soft magnetic carbonyl iron LK - https://researchspace.csir.co.za PY - 2011 SM - 0927-7757 T1 - Magnetic carbonyl iron suspension with organoclay additive and its magnetorheological properties TI - Magnetic carbonyl iron suspension with organoclay additive and its magnetorheological properties UR - http://hdl.handle.net/10204/4892 ER -