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Rheological characterisation and phenomenological modelling of non‐aqueous nano‐suspensions of iron carbide produced by plasma spray
Author(s) -
Abatzoglou Nicolas,
Gosselin Ryan,
Inam Muhammad Asif
Publication year - 2014
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.21859
Subject(s) - rheology , thixotropy , materials science , phenomenological model , shear thinning , shear rate , suspension (topology) , viscosity , chemical engineering , thermodynamics , composite material , engineering , physics , mathematics , quantum mechanics , homotopy , pure mathematics
Opaque non‐aqueous suspensions of nano‐particles mixtures are difficult to analyse directly in terms of particle behaviour under shear conditions (flow). This work proposes a rheological characterisation of a nano‐iron‐carbide‐rich solid phase dispersed in decalin. These suspensions have shown a non‐Newtonian, shear thinning, no‐thixotropic behaviour at three temperature levels and five concentration levels. Based on acoustic attenuation spectroscopy, it is concluded that the aggregation state of the suspension does not change with solids content. The relationship between viscosity, concentration and shear rate was modelled at three temperature levels using two phenomenological methods.