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@inproceedings{Hoshino:2010,
author = {Hoshino, K and Yagishita, K and Tagawa, K and Spikes, H},
pages = {178--184},
title = {Sulphur-free antiwear additives zinc dialkylphosphates (ZPs) - Film forming and friction properties},
year = {2010}
}
TY - CPAPER
AB - ZPs (zinc dialkylphosphates) are sulphur-free analogues of ZDDPs (zinc dialkyldithiophosphates) and have been attracting considerable attention from the environmental viewpoint. In this study, to clarify their mechanism of action as antiwear additives, the film-forming and friction properties of ZPs were investigated using a spacer layer interferometry imaging system (SLIM) attached to a rolling-sliding mini-traction machine (MTM). The results show that ZPs form thick tribo-films, although the film-forming rates are slower and the films are thinner than those of ZDDPs. It is also shown that there is no noticeable difference in friction behaviour between ZPs and ZDDPs. In addition, these properties are strongly affected by the structure of the alkyl chains of ZPs and ZDDPs. The antiwear performance of the additives was also studied. Generally, under the condition employed in this study, the antiwear performance of ZPs is better than that of ZDDPs at low sliding speeds, while the performance of ZDDPs is better than that of ZPs at high speeds. The antiwear performance is also influenced by the structure of the alkyl chains.
AU - Hoshino,K
AU - Yagishita,K
AU - Tagawa,K
AU - Spikes,H
EP - 184
PY - 2010///
SP - 178
TI - Sulphur-free antiwear additives zinc dialkylphosphates (ZPs) - Film forming and friction properties
ER -