Počet záznamů: 1

Plasma-treated carbonyl iron particles as a dispersed phase in magnetorheological fluids

  1. 1.
    0363140 - UH-J 2012 RIV NL eng J - Článek v odborném periodiku
    Sedlačík, M. - Pavlínek, V. - Lehocký, M. - Mráček, A. - Grulich, O. - Švrčinová, Petra - Filip, Petr - Vesel, A.
    Plasma-treated carbonyl iron particles as a dispersed phase in magnetorheological fluids.
    Colloids and Surfaces. A - Physicochemical and Engineering Aspects. Roč. 387, 1-3 (2011), s. 99-103 ISSN 0927-7757
    Grant ostatní:GA ČR(CZ) GD104/09/H080; OP VaVpI(XE) CZ.1.05/2.1.00/03.0111
    Program:GD
    Výzkumný záměr: CEZ:AV0Z20600510
    Klíčová slova: carbonyl iron * magnetorheological fluid * plasma * viscoelasticity
    Kód oboru RIV: BK - Mechanika tekutin
    Impakt faktor: 2.236, rok: 2011

    The aim of this paper is to document suitability of plasma-treated carbonyl iron particles as a dispersed phase in magnetorheological fluids. Surface-modified carbonyl iron particles were prepared via their exposure to 50% argon and 50% octafluorocyclobutane plasma. The X-ray photoelectron spectroscopy was used for analysis of chemical bonding states in the surface layer. Plasma-treated particles were adopted for a dispersed phase in magnetorheological (MR) fluids, and the MR behaviour was investigated using rotational rheometer equipped with magnetic field generator. Viscoelasticity changes of MR fluids were measured in the small-strain oscillatory shear flow as a function of the strain amplitude, frequency and the magnetic flux density. The MR fluids based on plasma-treated particles exhibit promoted suspension stability, which is attributed to the interactions between fluorine bonded on particle surface and methyl groups of silicone oil.
    Trvalý link: http://hdl.handle.net/11104/0199204
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