Synthesis, characterization and devitrification behaviour of an yttrium containing boroaluminate glass - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Journal of Materials Science Année : 2006

Synthesis, characterization and devitrification behaviour of an yttrium containing boroaluminate glass

Marie Le Floch
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Bruno Bureau
Patricia Bénard-Rocherullé

Résumé

The glass forming region in the B2O3-Al2O3-Y2O3 composition diagram has been determined by a melting and quenching procedure at temperatures up to 1800°C. Different physical characteristics (density, coefficient of thermal expansion, glass transition and crystallization peak temperatures) have been determined for a 35B2O3-40Al2O3-25Y2O3 glass composition (in mol.%). By using a predictive model and some NMR structural data, different elastic moduli (Young's modulus, bulk modulus, shear modulus and Poisson's ratio) have been calculated. The devitrification behaviour has also been studied. Internal crystallization is the dominant mechanism and a new (Y, Al)BO3 ternary phase has been characterized by X-ray powder diffraction. The temperature and time nucleation dependence have been determined from DTA experiments as well as the crystallization kinetics (i.e. the Avrami exponent and the activation energy for crystal growth).

Domaines

Matériaux

Dates et versions

hal-00868336 , version 1 (01-10-2013)

Identifiants

Citer

Nicolas Hémono, Jean Rocherullé, Marie Le Floch, Bruno Bureau, Patricia Bénard-Rocherullé. Synthesis, characterization and devitrification behaviour of an yttrium containing boroaluminate glass. Journal of Materials Science, 2006, 41 (2), pp.445-453. ⟨10.1007/s10853-005-2157-7⟩. ⟨hal-00868336⟩
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