THE CHEMISORPTION OF NITROGEN ON POLYCRYSTALLINE TUNGSTEN WIRES,
Abstract
Desorption spectra were obtained for successively increasing amounts of nitrogen adsorbed on three polycrystalline tungsten wires at room temperature. Two beta phases were desorbed, beta-1 with first-order kinetics and an activation energy of 73 kcal/mole and beta-2 with second-order kinetics and an activation energy of 75 kcal/mole. Surface impurities such as carbon or thorium reduced the size of the beta-1 phase. Mass spectrometric evidence showed that the small alpha phase was adsorbed as molecules, and the beta-1 and beta-2 phases were adsorbed as atoms. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 14, 1964
- Accession Number
- AD0617496
Entities
People
- L. J. Rigby
Organizations
- National Research Council Canada