Biomedical Engineering Reference
In-Depth Information
T
p
PW
Ti10
T
g
glass Ti-10
T
o
T
p
T
g
T
o
glass Ti-0
PW
Ti0
200
300
400
500
600
700
800
900
Temperature (
°
C)
Figure 4.9
DSC traces of two phosphate invert glasses showing glass transi-
tion temperature (
T
g
), crystallisation onset temperature (
T
o
) and crystallisation
peak temperature (
T
p
) and the processing window (PW). Glass Ti-10 shows a larger
processing window than glass Ti-0 due to strong ionic cross-linking by Ti
4
+
.
150
145
140
135
130
125
120
0
20
40
Sr for Ca substitution (%)
60
80
100
Figure 4.10
Processing window (temperature difference between crystallisation
onset,
T
o
, and glass transition,
T
g
) versus Sr for Ca substitution in the glass.