Accession Number:

AD0669620

Title:

GROWTH OF SINGLE CRYSTALS OF AMMONIUM PERCHLORATE FROM AQUEOUS SOLUTION,

Descriptive Note:

Corporate Author:

EXPLOSIVES RESEARCH AND DEVELOPMENT ESTABLISHMENT WALTHAM ABBEY (ENGLAND)

Personal Author(s):

Report Date:

1967-12-27

Pagination or Media Count:

36.0

Abstract:

The growing of large single high quality crystals of ammonium perchlorate from solution is difficult because it requires pure solutions for growth and precise control of supersaturation. In this report two methods are described for growing large crystals of ammonium perchlorate, the difference being in the technique of producing supersaturated solution. One method induces excess nutrient into a system by slowly cooling a saturated solution in a linear manner by 0.05 degC per day, while the other uses a thermal gradient to create a flow of solution from a zone in which it is saturated to a cooler zone in which it becomes supersaturated. A study also has been made of the influence of small traces of additives in the solvent on the crystal growing habit of ammonium perchlorate. Author

Subject Categories:

  • Crystallography
  • Solid Rocket Propellants

Distribution Statement:

APPROVED FOR PUBLIC RELEASE