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Advances in Materials Science and Engineering
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Advances in Materials Science and Engineering
/
2020
/
Article
/
Tab 3
/
Research Article
Enhancing the Quality of the Characteristic Transmittance Curve in the Infrared Region of Range 2.5–7
µ
m of the Optical Magnesium Fluoride (MgF
2
) Ceramic Using the Hot-Pressing Technique in a Vacuum Environment
Table 3
The experimental results of the transmittance.
Order
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
500
700
500
700
500
700
700
480
720
600
600
600
600
600
600
600
600
Temperature
T
(°C)
10
10
50
50
10
10
50
50
30
30
5
55
30
30
30
30
30
Time
t
(min)
100
100
100
100
300
300
300
300
200
200
200
200
80
320
200
200
200
Pressure
(MPa)
The transmittance at 4, 5
µ
m
τ
(%)
57
66
70
73
63
79
59
76
77
71
83
71
84
69
86
85
87