Detail publikačního výsledku

Lubricant-surface interactions of polymer-coated engine journal bearings

REPKA, M.; DOERR, N., BRENNER, J., GABLER, CH.,MCALEESE, C.,ISHIGO, O., KOSHIMA, M.

Originální název

Lubricant-surface interactions of polymer-coated engine journal bearings

Anglický název

Lubricant-surface interactions of polymer-coated engine journal bearings

Druh

Článek WoS

Originální abstrakt

This work provides the methodology for the improved understanding of tribocontacts with tribolayers formed from the interactions of an engine oil and the surface of a journal bearing under boundary lubricating conditions. In particular, advanced surface characterisation combining X-ray photoelectron spectroscopy (XPS) and high resolution mass spectroscopy (MS) contributed to integrated knowledge on tribochemical and tribomechanical processes in the tribocontact studied. An engine connecting rod bearing lubricated with commercial OW-20 GF5 engine oil was evaluated as part of the tribosystem. Bearing material was a recently developed polymer-based overlay which increased in popularity in the automotive market owing to the durability and superior tribological properties. After engine bench tests and fatigue experiments, conventional oil analyses showed only minor changes regarding oil chemistry whereas MS revealed significant additive degradation, e.g., formation of organic phosphates from ZDDP and depletion of tris(2,4-di-tert-butylphenyl) phosphite additive. Regarding the fatigue experiments, surface analysis by XPS showed the formation of tribofilms with a thickness only in the range of a few nanometers and composed of P, S and Zn, i.e., mainly elements in ZDDP. This publication reports for the first time on surface characterisation by laser desorption ionisation MS applied to engine journal bearings: the presence of an organic phosphorus compound the origin of which is assumed from ZDDP could be revealed by this approach.

Anglický abstrakt

This work provides the methodology for the improved understanding of tribocontacts with tribolayers formed from the interactions of an engine oil and the surface of a journal bearing under boundary lubricating conditions. In particular, advanced surface characterisation combining X-ray photoelectron spectroscopy (XPS) and high resolution mass spectroscopy (MS) contributed to integrated knowledge on tribochemical and tribomechanical processes in the tribocontact studied. An engine connecting rod bearing lubricated with commercial OW-20 GF5 engine oil was evaluated as part of the tribosystem. Bearing material was a recently developed polymer-based overlay which increased in popularity in the automotive market owing to the durability and superior tribological properties. After engine bench tests and fatigue experiments, conventional oil analyses showed only minor changes regarding oil chemistry whereas MS revealed significant additive degradation, e.g., formation of organic phosphates from ZDDP and depletion of tris(2,4-di-tert-butylphenyl) phosphite additive. Regarding the fatigue experiments, surface analysis by XPS showed the formation of tribofilms with a thickness only in the range of a few nanometers and composed of P, S and Zn, i.e., mainly elements in ZDDP. This publication reports for the first time on surface characterisation by laser desorption ionisation MS applied to engine journal bearings: the presence of an organic phosphorus compound the origin of which is assumed from ZDDP could be revealed by this approach.

Klíčová slova

Bearing; Journal Plain Bearings; Failures Tribochemistry Surface; Chemical analysis Spectroscopy; X-ray photoelectron

Klíčová slova v angličtině

Bearing; Journal Plain Bearings; Failures Tribochemistry Surface; Chemical analysis Spectroscopy; X-ray photoelectron

Autoři

REPKA, M.; DOERR, N., BRENNER, J., GABLER, CH.,MCALEESE, C.,ISHIGO, O., KOSHIMA, M.

Rok RIV

2021

Vydáno

01.05.2017

Nakladatel

ELSEVIER SCI LTD

Místo

OXFORD

ISSN

0301-679X

Periodikum

Tribology International

Svazek

109

Číslo

1

Stát

Spojené království Velké Británie a Severního Irska

Strany od

519

Strany do

528

Strany počet

10

URL

http://apps.webofknowledge.com.ezproxy.lib.vutbr.cz/full_record.do?product=WOS&search_mode=GeneralSearch&qid=9&SID=E6JXvEJHJpsw8EibggE&page=1&doc=1

BibTex

@article{BUT163548,
  author="REPKA, M. and DOERR, N., BRENNER, J., GABLER, CH.,MCALEESE, C.,ISHIGO, O., KOSHIMA, M.",
  title="Lubricant-surface interactions of polymer-coated engine journal bearings",
  journal="Tribology International",
  year="2017",
  volume="109",
  number="1",
  pages="519--528",
  doi="10.1016/j.triboint.2017.01.017",
  issn="0301-679X",
  url="http://apps.webofknowledge.com.ezproxy.lib.vutbr.cz/full_record.do?product=WOS&search_mode=GeneralSearch&qid=9&SID=E6JXvEJHJpsw8EibggE&page=1&doc=1"
}