Screening seeds for quartz growth

Details Screening seeds for quartz growth Screening seeds for quartz growth

1975-05-27

1976-08-24

Emery, Stephen J.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156623Q, 23273R, 23301, 23230R, 156DIG64, 156DIG65, B01J 1704, C01B 3312

Patent

active

039765350

ABSTRACT:
z-face quartz of good quality suitable for piezoelectric applications can be grown at rates near 35 mil/da at p-T conditions easily accessible in commercial autoclaves. The growth conditions are predictable from previous systematic studies of growth rate. Cracking of grown crystals either during growth or in crystal processing can be severe and can account for as much as 15-50% yield loss. However, much of this loss can be reduced by carefully screening seeds for strain using the new polariscopic technique of the invention. Strain (and cracking) are severe with growth on highly strained seeds and at high growth rates. Carefully choosing seeds reduces the strain in the grown material for a given growth rate.

REFERENCES:
patent: 1918976 (1933-07-01), Marrison
patent: 2423357 (1947-07-01), Watrobski
patent: 2558745 (1951-07-01), Friedman
patent: 2871192 (1959-01-01), Augustine
patent: 2907808 (1959-10-01), Stanley
patent: 3291575 (1966-12-01), Sawyer
patent: 3607108 (1971-09-01), Gehres
patent: 3788890 (1974-01-01), Mader
patent: 3853596 (1974-12-01), Distler
patent: 3917506 (1975-11-01), Lind

Affiliated with

Also associated with

Rating

Screening seeds for quartz growth does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Screening seeds for quartz growth, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Screening seeds for quartz growth will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-776662