Influence of the Carbon Allotropes on Dilatometric Properties …
657
Table 1
Position of the singularities (T
± 3 °C) and their character—local maximum (max) or minimum (min);
i T (i
= (1
÷ 5))—temperature ranges chosen
for the
L/L 0 and
α(T) dependences calculation analysis; Average values of the linear thermal expansion coefficients, <α
i (T)> ·10 5
, and normalized starting
values of the Fe–Cu sample length,L ∗
oi 10 −4
, for each temperature range which has been chosen; temperature of the extremum points (T
extr ) on the DSC curves
Singularities number
Sample
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Fe–Cu
65
(max)
118
(min)
295
(max)
419
(min)
453
(max)
542
(min)
690
(max)
Fe–Cu-CNT(0.5) 63
(min)
90
(max)
120
(min)
232
(max)
300
(min)
484
(max)
593
(min)
653
(max)
Fe–Cu-CNT(1.0) 65
(max)
88
(min)
122
(max)
200 (min)
255
(max)
300
(min)
322
(max)
366
(min)
390
(max)
482
(min)
540
(max)
583
(min)
715
(max)
Fe–Cu-CNT(2.0) 65
(max)
95
(min)
120
(max)
160 (min)
215
(max)
300
(max)
370
(max)
520
(max)
690
(min)
Temperature ranges
i T
65–120
165–260
310–525
575–650
725–790
<α
i (T)>
−0.26
0.31
0.27
0.82
0.79
L ∗
oi
3.23
6.86
1.9
4.99
19.42
T
extr
68–75
120–125
155 265
435–470
565–590
675