Creation of a parting zone in a crystal structure

Details Creation of a parting zone in a crystal structure Creation of a parting zone in a crystal structure

1983-11-14

1985-10-08

Albritton, C. L.

Electric heating

Metal heating

By arc

125 30R, B23K 2600

Patent

active

045462313

ABSTRACT:
A method of providing a thin parting zone in diamond and other crystal material is used to separate the crystal into multiple parts. The method comprises the following steps. An entrance window is prepared on the outer surface of the crystal. The window can transmit a beam of energy. An energy beam is focussed on a point zone of energy absorbing material which is spaced from the window in the crystal. The energy absorbing zone is generated at the focal point of the beam. The focal point of the beam is scanned through a succession of overlapping potential damage cells which lie along a predetermined parting zone within the crystal. The beam creates a plurality of actual damage cells comprised of shattered material which creates the parting surface. The succession of potential damage cell is such that the previously generated actual damage cells do not lie along the path of the beam between the actual damage cells being generated and the window.

REFERENCES:
patent: 3970819 (1976-07-01), Gates et al.
patent: 4401876 (1983-08-01), Cooper et al.

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