Document Type
Article
Publication Date
2013
Publication Source
Friction and Wear Research
Abstract
The reaction of metal carbides with polyol esters found in aerospace lubricants and phosphate esters commonly used as additives was investigated. Carbides were of particular interest since modern materials under consideration at high temperature bearings have surfaces that are primarily metal carbides. Vanadium and chromium carbide were found to react with the ester and phosphate ester by a transesterification reaction, producing an alkyl phosphate which is less stable than the aromatic phosphate esters. In the process, the metal carbide is converted to the metal phosphate and metal polyphosphate, evidenced by the infrared and Raman spectra of the solid residue and presence of a large amount of phosphorus found on the surface of the material. Arguments for the mechanism of this reaction are based on the examination of the reaction vanadium carbide and chromium carbide with an extensive series of model compounds, prepared for this study. The model compounds allow several intermediates to be identified and the reaction pathway to be determined.
Inclusive pages
1-9
ISBN/ISSN
2329-3349
Document Version
Published Version
Copyright
Copyright © 2013 by the authors. Its content is licensed under the Creative Commons Attribution-Noncommercial-No Derivatives 2.5 License (CC-BY-NC-ND).
Publisher
Science and Engineering Publishing Company
Volume
1
Peer Reviewed
yes
Issue
1
eCommons Citation
Johnson, David W.; Iacullo, Carolyn; and Hils, John E., "Reaction Between Polyol-Esters and Phosphate Esters in the Presence of Metal Carbides" (2013). Chemistry Faculty Publications. 42.
https://ecommons.udayton.edu/chm_fac_pub/42
Included in
Analytical Chemistry Commons, Biochemical Phenomena, Metabolism, and Nutrition Commons, Chemical and Pharmacologic Phenomena Commons, Environmental Chemistry Commons, Inorganic Chemistry Commons, Materials Chemistry Commons, Medical Biochemistry Commons, Medicinal-Pharmaceutical Chemistry Commons, Organic Chemistry Commons, Other Chemistry Commons, Physical Chemistry Commons
Comments
Friction and Wear Research is an open-access journal. The document is available for download in compliance with publisher policies. Permission documentation is on file.