Method of manufacturing dislocation and etch channel free quartz

Details Method of manufacturing dislocation and etch channel free quartz Method of manufacturing dislocation and etch channel free quartz

1987-08-31

1988-12-06

Lovering, Richard D.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156603, 156623Q, 23301, 65 33, 65DIG8, 51283R, 125 12, C03C 1014

Patent

active

H00005606

ABSTRACT:
Dislocation and etch channel-free quartz resonator blanks are made from a cultured quartz stone by visualizing the dislocation-free areas of the cultured quartz stone by X-ray topography, cutting seed plates for the next generation of crystal growth from the dislocation-free areas of the cultured quartz stone, growing dislocation free quartz from said seed plates using conventional growth techniques, and cutting dislocation-free quartz resonator blanks from said dislocation-free quartz.

REFERENCES:
patent: 3291575 (1966-12-01), Sawyer
patent: 3576608 (1971-04-01), Gehres
patent: 3917506 (1975-11-01), Lind et al.
patent: 3976535 (1976-08-01), Barnes
patent: 4255228 (1981-03-01), Vig
patent: 4576808 (1986-03-01), Armington et al.
Barns et al., "Production and Perfection of `Z-Face` Quartz", J. Crys. Grh, 34 (1976), 189-197.

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