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Viscosity of Fluoride‐Free Mold Fluxes Containing B 2 O 3 and TiO 2
Author(s) -
Wang Zhen,
Shu Qifeng,
Chou Kuochih
Publication year - 2013
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201200256
Subject(s) - viscosity , fluoride , materials science , slag (welding) , work (physics) , thermodynamics , mold , analytical chemistry (journal) , chemistry , inorganic chemistry , metallurgy , composite material , chromatography , physics
Viscosities of B 2 O 3 and TiO 2 ‐bearing fluoride‐free mold fluxes have been measured by the rotating cylinder method in this work. Effects of different B 2 O 3 , TiO 2 content, and basicities on the viscosity characteristics have been examined. Viscosity of fluoride‐free mold fluxes containing B 2 O 3 and TiO 2 was found to decrease with the increase of B 2 O 3 , TiO 2 content, and basicity. The values of apparent activation energy for viscous flow of slags decrease with additions of B 2 O 3 and TiO 2 and the increase of basicity. Two parameters A and B in Riboud model were re‐evaluated based on the present experimental data, and the modified Riboud model was used to estimate the viscosity of fluoride‐free slag system investigated in present work. The viscosity values obtained by the experimental measurement were in good agreement with those calculated by the modified Riboud model.