Geoscience Reference
In-Depth Information
Figure 5.26 Thermal behavior of
AlPO
4
[107]
.
4 wt% Pb
1.5 wt% Pb
550
°
C
563
°
C
4 wt% Cu
550
°
C
1.5 wt% Cu
563
°
C
4 wt% Bi
1.5 wt% Bi
558
°
C
559
°
C
4 wt% Mg
556
°
C
4 wt% Lo
555
°
C
4 wt% Zr
559
°
C
1.5 wt% Be
555
°
C
1.5 wt% Cr
1.5 wt% Fe
547
°
C
Pure AIPO
4
577
°
C
586
°
C
450
500
550
T
(
°
C)
600
650
Table 5.8 Thermal Expansion of
α
-Berlinite Containing Admixtures
[2,11]
Admixture
Ionic Radii Atomic Weight
a
c
v
1.63
3
10
2
5
1.068
3
10
2
5
4.38
3
10
2
5
1.90
3
10
2
5
1.89
3
10
2
5
5.77
3
10
2
5
Sr
0.63
51.996
1.98
3
10
2
5
1.13
3
10
2
5
5.16
3
10
2
5
Fe
0.64
55.847
1.76
3
10
2
5
1.81
3
10
2
5
5.39
3
10
2
5
Cu
0.72
63.546
2.02
3
10
2
5
2.64
3
10
2
5
6.78
3
10
2
5
Nd
0.99
144.24
1.75
3
10
2
5
2.64
3
10
2
5
6.22
3
10
2
5
La
1.016
138.905
concentration of the admixture in the nutrient was 1.5 wt%
berlinite in detail. The thermal expansion values vary depending upon the percentage
of concentration of impurities in the crystal.
The values of thermal expansion for
-berlinite containing various admixtures
are given in
Table 5.8
, and the values are, in general, very low for these materials
α
