A GENERALIZED MODEL FOR THE CHEMISORPTION BEHAVIOR OF NITROGEN ON TUNGSTEN.
Abstract
A model to describe the chemisorption of beta-nitrogen on tungsten is discussed. It is based on the following assumptions; the binding is atomic, the energy is dissipated upon molecular desorption, the adsorption rate depends on heat of surface diffusion, the surface potential depends on the height of adatoms and an equilibrium concentration of molecular complexes is maintained on the surface during adsorption. The primary result of this model is the quantitative prediction of the existence of molecular complexes, formed at high temperatures as a result of collisions between the nitrogen adatoms. This explanation is shown to be consistent with much of the published adsorption data of the nitrogen adatom adsorption's effects on the various tungsten planes' surface potentials and their temperature variations. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1966
- Accession Number
- AD0629480
Entities
People
- William K. Warburton
Organizations
- Cornell University School of Applied and Engineering Physics