January 28, 2010

Volume 7 Issue 1, Pages 104 – 110

Mohamad Hassan Imanieh, Bijan Eftekhari Yekta, Vahak Marghussian
Published
Online: Feb 2 2009 9:24AM

DOI: 10.1111/j.1744-7402.2008.02336.x

ABSTRACT
The effect of Ce, Sb, and Sn photosensitive elements, individually and
in combination with each other, on solarization and crystallization of
an X-ray irradiated and a nonirradiated lithium silicate-based glass
were investigated. According to the results, considering the
crystallization behavior of the nonirradiated glasses, they were divided
into Ce-bearing and Ce-free groups, in which the former group showed a
clearer solarization tendency that manifested as an appearance of an
absorbance peak at 318 nm in the spectrophotometry experiment. However,
the results showed that in the irradiated glasses, the presence of Sb
was more important in terms of improvement in crystallization view.
Antimony decreased the differential thermal analysis (DTA)
crystallization peak temperature from 655°C to 594°C and, in combination
with the two other elements, changed the surface crystallization
mechanism to a bulk one. The reactions that seemed to be responsible for
the above-mentioned observations were discussed by spectrophotometry,
DTA, X-ray diffraction, and scanning electron microscopic methods.

Online Access to Journal of Applied Ceramic Technology

,

Share/Print