Process for thermal gradient zone melting utilizing a beveled wa

Details Process for thermal gradient zone melting utilizing a beveled wa Process for thermal gradient zone melting utilizing a beveled wa

1978-12-07

1979-10-09

Ozaki, G.

Metal treatment

Compositions

Heat treating

148177, 148187, 252 623E, 357 55, H01L 21225

Patent

active

041704908

ABSTRACT:
When a body of semiconductor material is to be processed by thermal gradient zone melting, the outer peripheral side surface of the body is beveled to form an included angle .alpha. with the bottom surface of the body. The measure of the angle .alpha. is such that the radiant heat impinging on the beveled side peripheral surface is equal to the radiant heat emitted by the beveled side peripheral surface of the body.

REFERENCES:
patent: 3179860 (1965-04-01), Clark et al.
patent: 3255055 (1966-06-01), Ross
patent: 3697829 (1972-10-01), Huth et al.
patent: 3895967 (1975-07-01), Anthony et al.
patent: 4001047 (1977-01-01), Boah
patent: 4035199 (1977-07-01), Anthony et al.
patent: 4075038 (1978-02-01), Anthony et al.

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