AN EXAMINATION OF THE REACTIVITY OF ZINC DI-ALKYL-DI-THIOPHOSPHATE INRELATION TO ITS USE AS AN ANTIWEAR AND ANTICORROSION ADDITIVE IN LUBRICATING OILS

Authors
ARMSTRONG DR FERRARI ES ROBERTS KJ ADAMS D
Citation
Dr. Armstrong et al., AN EXAMINATION OF THE REACTIVITY OF ZINC DI-ALKYL-DI-THIOPHOSPHATE INRELATION TO ITS USE AS AN ANTIWEAR AND ANTICORROSION ADDITIVE IN LUBRICATING OILS, Wear, 217(2), 1998, pp. 276-287
Citations number
21
Categorie Soggetti
Material Science","Engineering, Mechanical
Journal title
Wear → ACNP
ISSN journal
00431648
Volume
217
Issue
2
Year of publication
1998
Pages
276 - 287
Database
ISI
SICI code
0043-1648(1998)217:2<276:AEOTRO>2.0.ZU;2-N
Abstract
The reactivity of the lubricating oil additive zinc di-alkyl-di-thioph osphate (ZDDP) was investigated by molecular orbital techniques. Semi- empirical quantum chemistry methods were used to model the structures of some of the complexes expected to form during the reaction of the a dditive with an oxygen rich steel surface. The results showed that the most stable of the complexes resulting from these reaction are those in which a short S-O bond is formed, thus suggesting that the sulphur atom is the most likely point of attack during the surface reaction. ( C) 1998 Elsevier Science S.A. All rights reserved.