A Method for the Controlled Addition of Oxygen to Columbium
Abstract
A technique for making additions of small amounts of oxygen to columbium (niobium) is presented. The technique involves complete reduction of a carefully weighed metal-metal oxide mixture by the columbium in a sealed evacuated chamber at 900 deg C. The oxygen pressure in equilibrium with the metal-metal oxide mixture was found to be quite critical. Large oxygen pressures resulted in severe surface oxidation while low oxygen pressures did not permit reduction in a reasonable amount of time. Using iron-wustite (Fe(x)O) mixtures, controlled additions of 15 to 300 ppm oxygen ere made to columbium. The technique makes possible oxygen additions within 4 ppm of the desired composition.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1968
- Accession Number
- ADA381966
Entities
People
- Frank E. Rizzo
- James D. Gerber
- Raymond D. Daniels
Organizations
- University of Oklahoma