Jump to main content
Jump to site search

Issue 7, 2011
Previous Article Next Article

ZrTiO4crystallisation in nanosized liquid–liquid phase-separation droplets in glass—a quantitative XANES study

Author affiliations

Abstract

The crystallisation of the nucleation agent ZrTiO4 in a low thermal-expansion lithium aluminosilicate glass-ceramics is monitored as a function of time by combining transmission electron microscopy with Ti-L2,3 X-ray absorption near-edge structure spectroscopy. The formation of liquid–liquid phase-separation droplets is shown to precede ZrTiO4 crystallisation within the latter nanosized droplets. Quantitative data on crystalline fractions enable conclusions on the self-limited growth of ZrTiO4 nanocrystals in low thermal-expansion glass-ceramics and based on Avrami's equation, the growth is shown to be restricted by a barrier (the outer border of the phase-separation droplet). It is shown that liquid–liquid phase separation and crystallisation are temporally decoupled. The size of ZrTiO4 crystallites is determined by the restricted volume of the phase-separation droplets they crystallise in. The volume of the droplets in turn is restricted by the formation of a diffusion barrier in the surrounding residual glass.

Graphical abstract: ZrTiO4 crystallisation in nanosized liquid–liquid phase-separation droplets in glass—a quantitative XANES study

Back to tab navigation

Article information


Submitted
11 Oct 2010
Accepted
18 Jan 2011
First published
07 Feb 2011

CrystEngComm, 2011,13, 2550-2556
Article type
Paper

ZrTiO4 crystallisation in nanosized liquid–liquid phase-separation droplets in glass—a quantitative XANES study

T. Höche, M. Mäder, S. Bhattacharyya, G. S. Henderson, T. Gemming, R. Wurth, C. Rüssel and I. Avramov, CrystEngComm, 2011, 13, 2550
DOI: 10.1039/C0CE00716A

Social activity

Search articles by author

Spotlight

Advertisements