Method for producing r-plane single crystal alpha alumina in mas

Details Method for producing r-plane single crystal alpha alumina in mas Method for producing r-plane single crystal alpha alumina in mas

1976-06-28

1977-05-24

Emery, Stephen J.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

23205A, 156DIG61, 156DIG65, 23273SP, B01J 1718, C01F 702

Patent

active

040253864

ABSTRACT:
Method for producing massive unicrystalline R-plane alpha alumina of circular cross-section from an alumina melt by controlled rotation of the seed rod upon which the alpha alumina is solidified and crystallized.

REFERENCES:
patent: 3527574 (1970-09-01), Belle
patent: 3621213 (1971-11-01), Jen
patent: 3650703 (1972-03-01), Labelle
patent: 3655415 (1972-04-01), Keig
patent: 3715194 (1973-02-01), Plooster
patent: 3761692 (1973-09-01), Cope
Namamoto et al., Sci. Rep. of Res. Insti-Tohoku Univ A, Japan, vol. 22, No. 4, Feb. 1971, pp. 156-164.
Kronberg, Acta Mettallurgica, vol. 5, 1957, Plastic Reformation of Sapphire, pp. 508-524.
Sahagian et al., Conf. Growth of Crystals, Moscow, USSR, 20-21, July 1966, Crystal Perfection of .alpha.-Al.sub.2 O.sub.3 A.sub.2 A Function of Growth Method, pp. 183-194.
Runyan, The Rev. of Sci-Instru, vol. 30, No. 7, July, 1959, pp. 535-540.

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