Preparation of high strength halide bodies

Patent 4118448 Issued on October 3, 1978. Estimated Expiration Date:

May 26, 1997. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3185750

Shaped press-forged normally frangible inorganic crystals Patent #: 3933970
Issued on: 01/20/1976
Inventor: Rosette , et al.

Inventor

Anderson, Rogers H.

Assignee

Honeywell Inc.

Application

No. 05/800675 filed on 05/26/1977

US Classes:

264/1.23, Halogen containing264/322, Initially softening workpiece264/325Utilizing closed mold cavity

Examiners

Primary: White, Robert F.
Assistant: Parrish, John A.

Attorney, Agent or Firm

Dahle; Omund R.

International Classes

H01S 3/034 (20060101)
H01S 3/03 (20060101)
C04B 35/515 (20060101)
C04B 35/645 (20060101)

Abstract

Fine-grained polygonized halide bodies are formed having comparable optical properties to a single crystal halide body. Heat and force are applied to the halide body to reduce the dimension of the body in one direction while the body is constrained in other directions.

Other References

Koepke et al., "Room Temperature Grain Growth in Potassium Chloride," J. Appl. Phys., vol. 45, No. 2, pp. 969-970
Becher et al.,"Strengthening effects in press forged KCl", J. Appl. Phys., vol. 44, No. 6, pp. 2915-2916
Johnson et al., "Mechanical Behavior of Single Crystal and Polycrystalline Cesium Bromide," J. Am. Cer. Soc., vol. 47, No. 9, pp. 437-444
Stokes et al., "Dislocations and Strength of Polycrystalline Ceramics," Natural Science Research, vol. 1, pp. 133-157 (1963)
Bernal et al., "Preparation and Characterization of Polycrystalline Halides for Use in High Power Laser Windows," AD-751655, 10-15-72