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 language | English (US) |
|---|---|
| Pages (from-to) | 1098-1101 |
| Number of pages | 4 |
| Journal | Journal of vacuum science & technology |
| Volume | 18 |
| Issue number | 3 |
| DOIs | |
| State | Published - 1980 |
| Event | Proc of the Natl Symp of the Am Vac Soc, 27th, Pt 2 - Detroit, MI, Engl Duration: Oct 13 1980 → Oct 17 1980 |
All Science Journal Classification (ASJC) codes
- General Engineering