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

SYSNO ASEP	0363140
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Plasma-treated carbonyl iron particles as a dispersed phase in magnetorheological fluids
Author(s)	Sedlačík, M. (CZ) Pavlínek, V. (CZ) Lehocký, M. (CZ) Mráček, A. (CZ) Grulich, O. (CZ) Švrčinová, Petra (UH-J) Filip, Petr (UH-J)_{ORCID, RID, SAI} Vesel, A. (SI)
Number of authors	8
Source Title	Colloids and Surfaces A-Physicochemical and Engineering Aspects. - : Elsevier - ISSN 0927-7757 Roč. 387, 1-3 (2011), s. 99-103
Number of pages	5 s.
Language	eng - English
Country	NL - Netherlands
Keywords	carbonyl iron ; magnetorheological fluid ; plasma ; viscoelasticity
Subject RIV	BK - Fluid Dynamics
CEZ	AV0Z20600510 - UH-J (2005-2011)
UT WOS	000295351500015
DOI	10.1016/j.colsurfa.2011.07.035
Annotation	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.
Workplace	Institute of Hydrodynamics
Contact	Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003
Year of Publishing	2012

Number of the records: 1