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APPLICATION OF X-RAY ABSORPTION SPECTROSCOPY IN TRIBOLOGY

Department of Chemistry, University of Western Ontario, London, Ontario, Canada N6A 5B7, Canada

Phone: (519)-661-2111 Ext. 6332

Fax: (519)661-3022

Department of Chemistry, University of Western Ontario, London, Ontario, Canada N6A 5B7, Canada

Phone: (519)-661-2111 Ext. 6332

Fax: (519)661-3022

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Department of Chemistry, University of Western Ontario, London, Ontario, Canada N6A 5B7, Canada

Phone: (519)-661-2111 Ext. 6332

Fax: (519)661-3022

Abstract:

The following sections are included:

Introduction
- X-ray Absorption Spectroscopy Using Synchrotron Radiation
- Detection Methods
- Comparison of Laboratory XPS and XANES

XANES Characterization of Model Compounds
- Polyphosphate Chain Length Effect on P K and L Edge XANES
- Cation Effect P K and L Edge XANES
- O K Edge XANES Spectra of Model Compounds
- S K Edge XANES of Model Compounds

Characterization of Tribochemical Films Using XAS
- EXAFS Characterization of Antiwear Films and Wear Particles Generated from ZDDPs
- XANES Characterization of Antiwear Films Generated from ZDDPs

ZDDP in Combination with Other Additives
- ZDDP + Detergents and Dispersants
- ZDDP + Molybdenum Dithiocarbamate (MoDTC)

X-ray Spectromicroscopy
- X-ray Spectromicroscopy of Alkyl and Aryl ZDDP Derived Antiwear Films
- Neutral and Overbased Ca Sulphonate in Combination with and without ZDDP