Accession Number:

ADB334972

Title:

The Preparation of Chromium by the Thermal Decomposition of Chromium Iodide

Descriptive Note:

Memorandum

Corporate Author:

WESTINGHOUSE ELECTRIC AND MANUFACTURING CO EAST PITTSBURG PA RESEARCH LABS

Personal Author(s):

Report Date:

1943-11-26

Pagination or Media Count:

16.0

Abstract:

This memorandum describes a method for the preparation of crystalline metallic chromium of a considerable degree of purity by the interaction of powdered electrolytic chromium with iodine vapor, the sublimation of the chromium iodide, and its subsequent decomposition on a hot tungsten filament, all in an evacuated quartz apparatus. This represents a new application of a process previously used for the preparation of zirconium by de Boer and Fast. The chromium thus prepared contains oxygen equivalent to 0.117 percent Cr2O3.

Subject Categories:

  • Inorganic Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE