Accession Number : AD0679976

Title :   LOW-ENERGY ELECTRON DIFFRACTION STUDIES OF THE INTERACTION OF OXYGEN WITH A MOLYBDENUM (100) SURFACE,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Personal Author(s) : Kan,H. K. A. ; Feuerstein,S.

Report Date : SEP 1968

Pagination or Media Count : 22

Abstract : Oxygen adsorption on the (100) surface of molybdenum single crystals was examined by low-energy electron diffraction (LEED) in a display-type apparatus. Continuous diffraction pattern observations from an initially clean surface were made at reaction temperatures between room temperature and 850C degrees. Below 650C degrees, no new ordered structures were observed. At 750C degrees, four ordered structures were formed on the surface with increasing oxygen coverage. The thermal characteristics and kinetics of formation of these oxides are discussed. In addition, models of surface structure with less than a monolayer oxygen coverage are presented. (Author)

Descriptors :   (*ELECTRON DIFFRACTION, MOLYBDENUM), (*MOLYBDENUM, *OXIDATION), OXYGEN, ADSORPTION, SINGLE CRYSTALS, THERMAL PROPERTIES, SURFACE PROPERTIES

Subject Categories : Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE