CO ABSORPTION ON Al-Zr AT ROOM TEMPERATURE.

C. H. Wu, R. L. Moore, S. A. Cohen

Research output: Contribution to journalConference article

7 Scopus citations

Abstract

A study of CO adsorption on room temperature Al-Zr has been done using Auger electron spectroscopy and gas pressure measurements. The atomic surface composition of clean Al-Zr surfaces prepared in UHV by Ar** plus sputtering was measured as a function of CO pressure and exposure time. The absorbed C and O have the same rate constants and surface concentrations for exposures less than 2 Langmuir. Above this exposure quasi-saturation occurs. The measured sticking probability of CO on Al-Zr is constant, S equals 0. 7 plus or minus 0. 3, for fractional coverage theta APP 1STH 0. 5. Above this point S decreased rapidly. The effect of surface roughness on the apparent sticking coefficient has been calculated by a Monte Carlo simulation. Reactivation of Al-Zr by heat treatment to 700 degree C has also been investigated.

Original languageEnglish (US)
Pages (from-to)1098-1101
Number of pages4
JournalJournal of vacuum science & technology
Volume18
Issue number3
DOIs
StatePublished - Jan 1 1980
EventProc of the Natl Symp of the Am Vac Soc, 27th, Pt 2 - Detroit, MI, Engl
Duration: Oct 13 1980Oct 17 1980

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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