Accession Number : AD0257331

Title :   OBSERVATIONS ON THE GROWTH OF ALPHA-IRON SINGLE CRYSTALS BY HALOGEN REDUCTION

Corporate Author : ILLINOIS UNIV URBANA

Personal Author(s) : WAYMAN,C.M.

Report Date : DEC 1959

Pagination or Media Count : 1

Abstract : By increasing the scale of the conventional technique for growing Fe whiskers, single crystals were produced of alpha-iron 1 to 2 mm in diameter and up to 80 mm in length. Reduction of molten FeCl2 by H at 731 C was employed. Approximately 0.6 kg FeCl2.4H2O was used; to insure that all Cl was reduced and all HCl was removed from the system, the reaction time was 12 hrs. Most of the crystals grown according to this technique were considerably longer and thicker than those obtained by the use of a smaller amount of salt under the same operating conditions. Such crystals represent a reproducible source of high purity, single crystals of alpha-iron of reasonable experimental size, conveniently preoriented by growth.

Descriptors :   *IRON, *SINGLE CRYSTALS, CHLORIDES, CRYSTALS, GROWTH(PHYSIOLOGY), HEAT TREATMENT, HYDROGEN, IRON COMPOUNDS, METALLURGY, PROCESSING, PRODUCTION, REDUCTION

Distribution Statement : APPROVED FOR PUBLIC RELEASE