Accession Number : AD0622809

Title :   MASS SPECTROMETRIC STUDY OF THE OXIDATION OF TUNGSTEN AND TANTALUM.

Descriptive Note : Summary rept.,

Corporate Author : BRUSSELS UNIV (BELGIUM) LABORATOIRE DE CHIMIE PHYSIQUE

Personal Author(s) : Drowart,J. ; Degreve,F. ; Detry,D. ; Smoes,S.

Report Date : AUG 1965

Pagination or Media Count : 17

Abstract : The rates of oxidation of tungsten and tantalum were studied in the respective temperature intervals 1450-2500 and 1900-2900K at oxygen pressures between 8x10 to the minus 6th power and 7x10 to the minus 5th power Torr. The apparent partial pressures of the gaseous oxides formed, WO2, WO3, TaO and TaO2 were determined. The rate of oxidation of tantalum is strongly time dependent. At the maximum, the amounts of oxides produced represent for W and Ta respectively about 1/92 and 1/16 of the incident molecular oxygen. (Author)

Descriptors :   (*TUNGSTEN, OXIDATION), (*TANTALUM, OXIDATION), (*OXIDATION, REFRACTORY METALS), MASS SPECTROSCOPY, HIGH TEMPERATURE, REACTION KINETICS

Distribution Statement : APPROVED FOR PUBLIC RELEASE