Work

Crystallization in heat-treated fluorochlorozirconate glasses

Year: 2009

Type: article

Abstract: Crystallization phenomena of fluorochlorozirconate glasses were investigated by means of differential scanning calorimetry and inelastic neutron scattering. The precipitation of barium chloride nanoparticles from the glass matrix upon heat treatment was found to be suppressed when re-melting the glass with a reducing agent but not if the agent was present in the initial synthesis. Addition of small amounts of oxide to the predominantly fluoride melt was found to maintain the presence of nanoparticles but not to induce the predicted phase transition of the barium chloride nanoparticles from hexagonal to orthorhombic structure. Inelastic neutron scattering performed on an 'as-made' glass and a heat-treated glass showed an increase in 'hardness', consistent with a more ordered structure.

Source: Journal of Physics Condensed Matter

DOI: 10.1088/0953-8984/21/37/375103

Authors: J A Johnson, J K R Weber, A I Kolesnikov, S Schweizer

Institutions: Materials Development (United States), Oak Ridge National Laboratory, Fraunhofer Center for Silicon Photovoltaics, Martin Luther University Halle-Wittenberg

Language: English

Topic: Glass properties and applications

Subfield: Ceramics and Composites

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funders: U.S. Department of Energy, National Institute of Biomedical Imaging and Bioengineering, Basic Energy Sciences

Award: ADVANCED HIGH-RESOLUTION TWO-DIMENSIONAL X-RAY DETECTOR FOR MAMMOGRAPHY