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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/4892

Title: Magnetic carbonyl iron suspension with organoclay additive and its magnetorheological properties
Authors: Hato, MJ
Choi, HJ
Sim, HH
Park, BO
Ray, SS
Keywords: Carbonyl iron
Organoclay
Magnetorheological fluid
Sedimentation
Physicochemical
Engineering
Colloids
Soft magnetic carbonyl iron
Issue Date: Feb-2011
Publisher: Elsevier
Citation: Hato, 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 103–109
Series/Report no.: Workflow request;5891
Abstract: 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.
Description: Copyright: 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 103–109
URI: http://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.pdf
http://hdl.handle.net/10204/4892
ISSN: 0927-7757
Appears in Collections:National Centre for nano-structured materials
Technology for special operations
Manufacturing science and technology
General science, engineering & technology

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