Jump to main content
Jump to site search


Structure and crystallization of SiO2 and B2O3 doped lithium disilicate glasses from theory and experiment

Author affiliations

Abstract

Solid solutions of SiO2 and B2O3 in Li2O·2SiO2 are synthesized and characterized for the first time. Their structure and crystallization mechanisms are investigated employing a combination of simulations at the density functional theory level and experiments on the crystallization of SiO2 and B2O3 doped lithium disilicate glasses. The remarkable agreement of calculated and experimentally determined cell parameters reveals the preferential, kinetically controlled incorporation of [SiO4] and [BO4] at the Li+ lattice sites of the Li2O·2SiO2 crystal structure. While the addition of SiO2 increases the glass viscosity resulting in lower crystal growth velocities, glasses containing B2O3 show a reduction of both viscosities and crystal growth velocities. These observations could be rationalized by a change of the chemical composition of the glass matrix surrounding the precipitated crystal phase during the course of crystallization, which leads to a deceleration of the attachment of building units required for further crystal growth at the liquid–crystal interface.

Graphical abstract: Structure and crystallization of SiO2 and B2O3 doped lithium disilicate glasses from theory and experiment

Back to tab navigation

Supplementary files

Publication details

The article was received on 05 Jul 2017, accepted on 03 Sep 2017 and first published on 04 Sep 2017


Article type: Paper
DOI: 10.1039/C7CP04503D
Citation: Phys. Chem. Chem. Phys., 2017, Advance Article
  •   Request permissions

    Structure and crystallization of SiO2 and B2O3 doped lithium disilicate glasses from theory and experiment

    A. Erlebach, K. Thieme, M. Sierka and C. Rüssel, Phys. Chem. Chem. Phys., 2017, Advance Article , DOI: 10.1039/C7CP04503D

Search articles by author

Spotlight

Advertisements