| AVS 55th International Symposium & Exhibition | |
| Applied Surface Science | Monday Sessions |
| Session AS-MoA |
| Session: | Electron Spectroscopies |
| Presenter: | P.M.A. Sherwood, Oklahoma State University |
| Authors: | Y. Wang, Oklahoma State University P.M.A. Sherwood, Oklahoma State University |
| Correspondent: | Click to Email |
It is generally very important to understand the chemical interactions that may occur at a buried interface in order to evaluate the choice of surface coatings that might be used in many practical applications. In order to make such a study it is generally possible to produce a very thin film of surface coating that is sufficiently thin to allow photoelectron spectroscopic data to be obtained from the interfacial region. The use of core and valence band photoemission to probe shallow buried interfaces will be illustrated using a number of examples of thin films on metals and carbon fibers. In particular the presentation will illustrate how thin oxide-free films of phosphate on steel surfaces can be studied, and their interaction with polymer films investigated. The effect of corrosive environments using water and saline solutions on these surfaces will be reported. It will be seen that the oxide-free phosphate films provide corrosion protection for the steel, and that the corrosion behavior is impacted by the addition of thin polymer films. The surface chemistry can be determined by using difference spectra, and by interpreting the valence band data by comparison with calculated spectra obtained from band-structure and other calculations.