Page 56 - Chalcogenide Glasses for Infrared Optics

Atom %
Sample Softening
Number Si P Te Point (°C) Remarks
39 25 10 65 300 Stable glass, 10% IR transmission
40 20 10 70 200 Stable glass, 10% IR transmission
41 15 10 75 175 Very good glass, 35% IR
transmission
42 15 5 80 160 Very good glass, 35% IR
transmission
43 20 5 75 200 Very good glass, 20% IR
transmission
47 25 5 70 250 Stable glass
48 30 5 65 Glassy
49 35 5 60 Glassy
50 40 5 55 Crystalline
51 30 0 70 Crystalline
52 25 0 75 Glassy
53 20 0 80 Glassy
54 15 0 85 375 Glassy
55 10 5 85 Crystalline
56 10 10 80 Crystalline

TABLE 2.1 Composition of Samples Used in the Evaluation of the Si-P-Te System 14
(Continued)

Si

50 36 35 15
37
49 25 24 34
48
51 38 26 16 23
52 47 39 27 22 12
21
53 43 40 28 3
54 42 41 29 19 20 33
55 56 30 31 32
Te P
FIGURE 2.7 The glass forming composition diagram for the Si-P-Te ternary
system. 14

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