Preferential Adsorption in the Lubrication Process of Zinc Dialkyldithiophosphate
作者:
D.B. Barton,
E.E. Klaus,
E.J. Tewksbury,
J.R. Strang,
期刊:
A S L E Transactions
(Taylor Available online 1973)
卷期:
Volume 16,
issue 3
页码: 161-167
ISSN:0569-8197
年代: 1973
DOI:10.1080/05698197308982717
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Paper chromatography has been used in combination with neutron activation analysis to analyze the polar lubricity additive zinc dihexyldithiophosphate. This additive is shown to contain small but significant quantities of both phosphorous and zinc-containing polar impurities. Results of lubricity tests suggest that these polar impurities are adsorbed preferentially on a metal surface and therefore are available for the lubrication reaction in preference to the zinc dihexyldithiophosphate molecule itself. An acid phosphate-type compound is believed to be the active polar impurity controlling the wear behavior of zinc dihexyldithiophosphate.
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