Accession Number : AD0426539

Title :   DISTILLATION OF BERYLLIUM BY SUBLIMATION AND EVAPORATION.

Descriptive Note : Interim rept. 15 Aug-30 Nov 63,

Corporate Author : FRANKLIN INST PHILADELPHIA PA LABS FOR RESEARCH AND DEVELOPMENT

Report Date : 30 NOV 1963

Pagination or Media Count : 11

Abstract : The purpose of this program is to prepare high purity beryllium by volatilizing it without the use of a containing crucible and under high vacuum conditions. This method is conceived as an improvement on the already developed tech nique of distilling beryllium onto a heated con densing surface. Specifically, the improved method is designed to minimize the oxygen pick up felt to be present during distillation with a BeO crucible. The technique includes both liquid and solid state distillation of the bery llium to be purified. The product obtained will be used for chemical analytical purposes. Ini tial efforts toward developing a system suitable for distillation studies consisted of evaluating the conditions for melting the end of a 1 inch diameter bar held vertically in a sealed quartz chamber. This was changed to the technique of using a water-cooled copper pedestal to support and stabilize a slug of molten beryllium. The water-cooled copper pedestal melting equipment is now being used for the collection and analy sis of vacuum deposited beryllium metal under a variety of operating conditions. (Author)

Descriptors :   (*BERYLLIUM, DISTILLATION), PUR, SUBLIMATION, EVAPORATION, ZONE, LOW PRESSURE RESEARCH, RODS, CHEMICAL ANALYSIS.

Distribution Statement : APPROVED FOR PUBLIC RELEASE