The Preparation of Chromium by the Thermal Decomposition of Chromium Iodide
WESTINGHOUSE ELECTRIC AND MANUFACTURING CO EAST PITTSBURG PA RESEARCH LABS
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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.
- Inorganic Chemistry