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Title: Reactivity in the chromium oxide-calcium fluoride system: An empirical approach
Authors: Vos, Frans ×
Delaey, Lucas
De Bonte, Marc
Froyen, Ludo #
Issue Date: Jun-1999
Publisher: Materials research society
Series Title: Journal of materials research vol:14 issue:6 pages:2518-2523
Abstract: The reaction mechanisms observed when sintering loose Cr2O3-CaF2 powder mixtures were analyzed, and the influence of the sintering parameters on the reaction behavior is presented. Using x-ray diffraction (XRD), energy-dispersive spectroscopy (EDS), and differential thermal analysis (DTA) measurements, CaCrO4 was shown to be the reaction product when sintering in air. The reaction occurs in two steps: CaF2 transforms to CaO at the Cr2O3 -CaF2 interface, followed by a CaO-Cr2O3 interaction, which creates the reaction product. Scanning electron microscopy (SEM) and x-ray fluorescence (XRF) analysis showed an increasing loss of CaF2 with increasing sintering temperature and heating rate, while an opposite evolution of the amount of reaction product was observed.
ISSN: 0884-2914
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Physical Metallurgy and Materials Engineering Section (-)
Chemical and Extractive Metallurgy Section (-)
Materials Technology TC, Technology Campus De Nayer Sint-Katelijne-Waver
Technologiecluster Materialentechnologie
× corresponding author
# (joint) last author

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