Title of article
Interface controlled active fracture modes in glass-ceramics
Author/Authors
Panagiotis Kavouras، نويسنده , , Thomas Kehagias، نويسنده , , Philomela Komninou، نويسنده , , Konstantinos Chrissafis، نويسنده , , Constantine Charitidis، نويسنده , , Theodoros Karakostas، نويسنده ,
Issue Information
دوهفته نامه با شماره پیاپی سال 2008
Pages
6
From page
3954
To page
3959
Abstract
The active fracture modes in glass-ceramics,
produced by controlled crystallization from three starting
vitreous products containing PbO and SiO2, were studied
and compared. The goal was to examine the active fracture
modes in PbO-rich glass-ceramic materials, where the main
glass former was PbO, and compare these results with
those reported in the literature, where the main glass former
was SiO2. The influence of composition, shape and
mean size of the ceramic phase on the active fracture
modes of the glass-ceramics was also examined. It was
observed that the microhardness and fracture toughness of
the starting vitreous products decrease with increasing PbO
content. Increase in the relative amount of SiO2 resulted in
a decrease of the percentage of the ceramic phase. Glassceramics
with higher PbO content showed typical behaviour
of high toughness material, i.e. intergranular fracture
mode, with lower microhardness value. Glass-ceramics
with lower PbO content showed typical behaviour of highstrength
material, i.e. transgranular fracture mode, with
higher microhardness value
Journal title
Journal of Materials Science
Serial Year
2008
Journal title
Journal of Materials Science
Record number
834359
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