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Tribology of polypropylene and Li-complex greases with ZDDP and MoDTC additives
KTH, School of Industrial Engineering and Management (ITM).
KTH, School of Industrial Engineering and Management (ITM).
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2018 (English)In: Tribology International, ISSN 0301-679X, E-ISSN 1879-2464, Vol. 118, 189-195 p.Article in journal (Refereed) Published
Abstract [en]

The influence of thickener and additive interactions on grease lubricating performance is examined. Polypropylene and lithium complex thickened (Li-complex) greases were tested both as neat greases and with a 2 wt% addition of ZDDP and/or MoDTC. A combination of ZDDP and MoDTC in the polypropylene grease provided the lowest friction with greater longevity compared to the Li-complex grease with the same additives, independent of sliding speed, contact pressure, temperature or type of sliding: continuous vs. reciprocating. The additive combination of ZDDP and MoDTC provided the best antiwear performance in both greases. Depending on the grease sample type, EDS revealed the presence of iron, zinc, phosphorous, sulfur, and molybdenum within the tribofilms.

Place, publisher, year, edition, pages
Elsevier Ltd , 2018. Vol. 118, 189-195 p.
Keyword [en]
Friction, Li-complex grease, MoDTC, Polymer grease, Wear, ZDDP
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-216798DOI: 10.1016/j.triboint.2017.09.028Scopus ID: 2-s2.0-85030721895OAI: oai:DiVA.org:kth-216798DiVA: diva2:1156866
Note

Export Date: 24 October 2017; Article; CODEN: TRBIB; Correspondence Address: Glavatskih, S.; System and Component Design, KTH Royal Institute of TechnologySweden; email: segla@kth.se. QC 20171114

Available from: 2017-11-14 Created: 2017-11-14 Last updated: 2017-11-14Bibliographically approved

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Glavatskih, Sergei

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