Dense alumina with a primary recrystallized polycrystalline stru

Details Dense alumina with a primary recrystallized polycrystalline stru Dense alumina with a primary recrystallized polycrystalline stru

1977-02-14

1982-04-06

Carter, Herbert T.

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

264 65, C01F 702

Patent

active

043235450

ABSTRACT:
The invention is directed to a transparent alumina material and a method of preparing this material.
The material is characterized as a dense primary recrystallized polycrystalline structure having a degree of preferred crystal orientation. The material is transparent to visible and infrared light and quantitative values are given.
The transparent alumina covered by this invention is made by means of hot forging and an annealing process for powders or dense compacts of high-purity alumina.

REFERENCES:
Sellers et al. (I), "Journal of the American Ceramic Soc.", vol. 50, #4, pp. 217-218, Apr. 1967.
Sellers et al. (II), "American Ceramic Soc. Bulletin", vol. 45, #9, p. 805, 1966.
Sellers et al. (III), "American Ceramic Soc. Bulletin", vol. 45, #9, p. 809, 1966.
Hulse et al., "Journal of the American Ceramic Soc.", vol. 43, #7, pp. 373-378, 1960.

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