Infrared window materials and their fabrication

Details Infrared window materials and their fabrication Infrared window materials and their fabrication

1982-08-23

1984-07-24

Doll, John

Chemistry of inorganic compounds

Rare earth compound

423511, 501904, 501152, 252587, C01F 1700

Patent

active

044617500

ABSTRACT:
Process for making densified ternary sulfide ceramics as infrared window erials using sulfide compounds MLn.sub.2 S.sub.4 belonging to the Th.sub.3 P.sub.4, CaFe.sub.2 O.sub.4 and spinel structure types. These refractory sulfides show good sinterability especially when fired in flowing hydrogen sulfide, and they can be densified by a combination of hot-pressing and hot-isostatic pressing into ceramic pieces approaching their theoretical density with closed pores and which have good transmission characteristics in the infrared region.

REFERENCES:
Chess et al., J. Am. Ceram. Soc., V. 66, No. 1, pp. 18-22, (Jan. 1983).
White et al., Proc. SPIE-Int. Soc. Opt. Eng., V. 297, pp. 38-43, (1981).

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