Surface passivated alkali halide infrared windows

Details Surface passivated alkali halide infrared windows Surface passivated alkali halide infrared windows

1979-08-31

1981-05-26

Robinson, Ellis P.

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204170, 350 16, 428409, 428696, 427 34, 427 38, 427 41, 427168, B05D 306, B32B 904

Patent

active

042698960

ABSTRACT:
Commercially available alkali halide crystals are passivated in a plasma environment and coated by a plasma polymerization process to form moisture resistant alkali halide cyrstals. Prolonged exposure to high humidity did not cause observable damage to the surface of the crystal.

REFERENCES:
patent: 3518108 (1970-06-01), Heiss
patent: 3822928 (1974-07-01), Smolinsky
patent: 3940506 (1976-02-01), Heinecke
patent: 4013532 (1977-03-01), Cormia
patent: 4188426 (1980-02-01), Auerbach
"IR Laser Window Coating by Plasma Polymerized Hydrocarbons", J. M. Tibbitt, A. T. Bell, and M. Shen, Proc. Fifth Conference on Infrared Laser Window Materials, ed. by C. R. Andrews and C. L. Strecker, U.S. Air Force Materials Laboratory Special Report, Wright-Patterson AFB, Ohio (1976), p. 206.
"Characteristics of Plasmas Polymerized Ethane for Laser Window Costing" T. A. Reis, H. Hiratsuka, A. T. Bell, and M. Shen, Laser Induced Damage in Optical Materials: 1976, Jul. 13-15, 1976, Boulder Colo., NBS Special Pub. 462 (U.S. Government Printing Office, Washington, D.C., Dec. 1976), p. 230.

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