Influence of Soot on the Anti-Wear Property of MoDTC and ZDDP

Influence of Soot on the Anti-Wear Property of MoDTC and ZDDP

Blog Article

In order to investigate the influence of soot on the anti-wear property of molybdenum dialkyldithiocarbamate(MoDTC) and zinc dialkyldithiophosphate(ZDDP), the soot was added into different oil samples and then a four-ball machine friction experiment was carried out on the samples.Results showed that when the mass fractions of MoDTC and ZDDP were 0.3% and 0.

9% respectively in the partially synthetic diesel engine oil base oil added with soot, the wear scar diameters of the oil samples were about 0.59 mm and 0.49 mm.

Compared with the base oil, the wear scar diameter of the oil samples containing ZDDP decreased by about 17.86%, while that of the oil samples containing MoDTC had no significant change.The existence of soot reduced the anti-wear property of MoDTC and ZDDP, and the deva curl arc angel main reason was that the soot scratched the protective film on the surface of the friction pair and so aggravated the wear.

However, the combination of MoDTC and ZDDP led to a synergistic effect, and the anti-wear property of oil sample was improved.The corresponding wear scar diameter was about 0.46 mm, merlin wizard costume which was reduced by about 22.

09% and 6.10% respectively compared with the single-agent oil samples.Through the analysis of the elements on the surface of the wear scar, it was found that the improvement of the anti-wear property after compounding was attributed to the synergistic effect between molybdenum element and sulfur and phosphorus elements, which resulted in a chemical reaction film formed and adsorbed on the surface of the friction pair, and thus leading to a more excellent anti-wear property.