| Type | Conference |
|---|---|
| Title | Comparison of tribological performance of zinc dialkyldithiophosphate (ZDDP) in poly-alpha-olefin (PAO) and palm oil-based trimethylopropane (TMP) ester |
| Source | MITC2015-pp 201-202 |
| Author | Rehan Zahid, H.H. Masjuki, Mahendra Varman, R.A. Mufti, Md. Abul Kalam, Mubashir Gulzar, R. Yunus |
Due to environmental legislations,
automotive industry is striving hard to shift from
mineral/synthetic oils to environmental friendly ones
such as vegetable oils. In this study, effectiveness of
ZDDP in enhancing the tribological properties of
steel/steel contact, when used in combination with
palm-oil based TMP ester, has been investigated and the
results are compared with that of PAO. Friction and
wear experiments were carried out using four-ball tribotesting machine. TMP and TMP+PAO offered low
values of friction compared to PAO. In addition, ZDDPderived tribofilm was detected on the interacting
surfaces, when TMP+PAO+ZDDP lubricant was used,
resulting in decreased wear.