CORROSION RESEARCH ROUND‐UP

Abstract

Determining impurities in titanium, particularly oxygen and carbo. The authors describe a new analytical process for determining impurities in titanium, principally oxygen and carbon. Titanium is attacked in evacuated, closed, hard glass vessels by bromine vapour in a self‐regulating process. The titanobromide thus produced may be isolated from metallic elements contaminating titanium, such as the bromides of Mg, Fe, etc., and from oxygen impurities remaining in the form of TiO2 and carbon impurities in the form of elementary carbon by a process of gradually heating the titanobromide to 200°C. by distillation and by freezing. Then the residue is again brominated in the closed vessel at 400°C. On opening the vessel the Mg, Fe and Ti contents remaining in the residue may be determined by conventional analytical methods and the carbon content established by a combustion method suitable for determining very small amounts of CO2. This combustion process may be applied directly for determining carbon in titanium base alloys as well. By this process Hungarian titanium samples were found to have oxygen contents ranging from 0.01 to 0.6%, with an error of ±5% and a carbon content of about 0.1% with an error of ±5%.—(T. Millner, J. Hegedus, M. Dvorszky (in German), Acta Technica Academiae Scientiarum Hungaricae, 15, (3–4), 361–372.)

Citation

(1958), "CORROSION RESEARCH ROUND‐UP", Anti-Corrosion Methods and Materials, Vol. 5 No. 3, pp. 96-98. https://doi.org/10.1108/eb043924