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There has been a growing concern for the use of mineral oils because of the worldwide interest in environmental issues. This has promoted the use of ashless additives as environmental friendly lubricants. A potential ashless additive, S-[2-S-(2-hydroxylpropyl)benthiazole]dioctyldithiocarbamic acid ester, was prepared in this work. The friction and wear behaviors of the synthesized compound as an additive...
In this paper, an organic compound containing S, N, B and O elements is synthesized with the reaction of 2-mercaptobenzothiazole and chloroethanol in aqueous solution firstly, then the product reacts with butanol and boric acid in toluene solution at reflex for 6 h. Its friction and wear properties as additives in liquid paraffin were evaluated using four-ball machine and antiwear mechanisms were...
The friction and wear performance of heterocyclic compounds (2-mercaptobenzoxazole, 2-mercaptobenzothiazole and 2-mercaptobenzimidazole), which have the same cyclic structure except for the one-location atom difference, added to liquid paraffin and synthesized diester were evaluated using a four-ball machine. The results show that there is a ranking of the antiwear performance: 2-mercaptobenzoxazole>2-mercaptobenzothiazole>2-mercaptobenzimidazole,...
A TiN coating, deposited by PVD, was rubbed against corundum balls in a laboratory fretting experiment for different number of cycles. The surface composition and chemical state of the wear tracks, debris found on the TiN coating and the transfer layer on the corundum counterbody were determined with X-ray photoelectron spectroscopy and Auger electron spectroscopy. The worn surfaces in all the wear...
The synthesis of 2-(n-Dodecyldithio)-benzothiazole is described. Their antiwear, antifriction, extreme pressure and antioxidation performance is examined in liquid paraffin. The synthesized product has been found to exhibit appreciable antiwear. The film formed by the additive during sliding process was investigated by using X-ray photoelectron spectroscopy and EPMA.
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