Accession Number : ADA133500

Title :   Manufacturing Technology for High Quality Swept-Culture Growth Quartz.

Descriptive Note : Interim rept. 13 Apr 82-13 Apr 83,


Personal Author(s) : Balascio,Joseph F ; Lias,Nicholas C

PDF Url : ADA133500

Report Date : Sep 1983

Pagination or Media Count : 63

Abstract : Relatively low impurity alpha-quartz has been grown form the hydroxide mineralizer system with the use of three types of nutrient: converted, special cultured and cultured. The converted nutrient resulted in the lowest total ppm level (2.6) and Al ppm level (0.5) in the as-grown crystals. Special cultured and cultured nutrients resulted in 1.7 ppm and 2.1 ppm of aluminum in crystals grown, respectively, from these nutrients. Infrared Q values ranged from 2.5x10 to the 6th power in these crystals. With respect to rho in the as-grown crystals, a ten minute etching of seeds in 7.0 molal ammonium bifluoride has resulted in the growth of the lowest etch channel density crystals (approx = 135/sq cm).

Descriptors :   *Quartz, *Crystal growth, *Fabrication, Purity, Seeds, Culture media, Ammonium compounds, Aluminum, Etching, Manufacturing, Methodology

Subject Categories : Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE