A theoretical investigation on the abrasive wear prevention mechanism of ZDDP and ZP tribofilms

Tasuku Onodera, Yusuke Morita, Ai Suzuki, Riadh Sahnoun, Michihisa Koyama, Hideyuki Tsuboi, Nozomu Hatakeyama, Akira Endou, Hiromitsu Takaba, Momoji Kubo, Carlos A. Del Carpio, Clotilde Minfray, Jean Michel Martin, Akira Miyamoto

    Research output: Contribution to journalArticlepeer-review

    20 Citations (Scopus)

    Abstract

    We investigated wear prevention mechanism of tribofilms generated from zinc dialkyldithiophosphate (ZDDP) and zinc dialkylphosphate (ZP) anti-wear additive using molecular dynamics simulations. The friction behavior of two model materials, zinc metathiophosphate and zinc metaphosphate, was studied. The results indicated that zinc metathiophosphate prevents the abrasive wear due to the atomistic digestion of the wear particles in the tribofilm. We also investigated wear prevention mechanism of zinc metaphosphate and found that it has a better wear prevention performance than zinc metathiophosphate as far as abrasive wear is concerned. Our study showed that zinc metaphosphate can achieve good wear prevention and reduce the environmental load since it does not contain sulfur.

    Original languageEnglish
    Pages (from-to)7976-7979
    Number of pages4
    JournalApplied Surface Science
    Volume254
    Issue number23
    DOIs
    Publication statusPublished - Sep 30 2008

    All Science Journal Classification (ASJC) codes

    • Chemistry(all)
    • Condensed Matter Physics
    • Physics and Astronomy(all)
    • Surfaces and Interfaces
    • Surfaces, Coatings and Films

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