Thermochromic behavior (400 < T °C < 1200 °C) of barium carbonate/binary metal oxide mixtures
Langue
en
Article de revue
Ce document a été publié dans
Dyes and Pigments. 2011, vol. 91, n° 3, p. 396-403
Elsevier
Résumé en anglais
Irreversible thermochromism over a wide temperature range has been observed from the decomposition of a mixture of a barium carbonate and a metal oxide. The control of the reaction temperature can be predicted from the ...Lire la suite >
Irreversible thermochromism over a wide temperature range has been observed from the decomposition of a mixture of a barium carbonate and a metal oxide. The control of the reaction temperature can be predicted from the calculation of the Madelung energy of the barium/transition metal mixed oxide formed consecutively with the decarbonatation. Moreover, the Madelung energy of this formed mixed oxide may be predicted from bond valence considerations. This study offers a simple predictive approach to propose temperature indicators with significant optical contrast and a thermochromic temperature varying between 400 and 1200 °C.< Réduire
Mots clés en anglais
Inorganic pigments
Thermochromism
Metal oxides
Barium carbonates
Colour
Bond Valence
Origine
Importé de halUnités de recherche