Importance of low-energy triboelectrons for the initiation of tribochemical reactions

Molina, G.J.; Kajdas, C.; Furey, M.J.; Ritter, A.L.

Artykuł - szczegóły

Tytuł artykułu

Importance of low-energy triboelectrons for the initiation of tribochemical reactions

Autorzy

Molina G.J. , Kajdas C. , Furey M.J. , Ritter A.L.

Wybrane pełne teksty z tego czasopisma

http://t.tribologia.eu

Identyfikatory

Warianty tytułu

Triboelektrony o niskiej energii i ich znaczenie w inicjowaniu reakcji tribochemicznych

Języki publikacji

Abstrakty

Mechanical energy associated with the boundary lubrication process releases a large number of physical phenomena. Energy outputs from rubbing can be the cause of tribochemical reactions between the friction components and lubricant molecules. In this, different charged-particles, e.g., electrons and positive ions, may be emitted from solids during rubbing. This paper discusses the role of triboemitted charged-particles on the initiation of tribochemical reactions. The hypotheses and mechanisms regarding the possible action of charged-particles, in particular lowenergy electrons, on tribochemical processes are reviewed. Connections are made between relevant tribochemical reactions, tribopolymerization among them, the Negative-Ion Radical Action Mechanism (NIRAM) and recent experimental results in the fields of triboemission and tribochemistry. A new instrument for the measurement of charge intensity and energy spectrum of triboemitted particles is briefly described. The authors' experimental findings, that mostly low-energy electrons (0-5eV) are triboemitted from alumina and sapphire sliding-contacts, are discussed with a focus on the mechanism of vinyl-type tribopolymerization. Finally, future plans are presented to use this instrument for further investigating the role of triboemission on tribochemistry.

Energia mechaniczna związana z procesem smarowania granicznego wywołuje szereg zjawisk fizycznych, które inicjują reakcje tribochemiczne. W artykule omówiono rolę triboelektronów w inicjowaniu procesu tribopolimeryzacji winylowej, zgodnie z koncepcją NIRAM. Opisano nowe urządzenie do badania procesu triboemisji. Najważniejszym osiągnięciem zrealizowanych badań na nowym urządzeniu jest stwierdzenie, że energia głównej części triboelektronów emitowanych z korundu i szafiru w styku ślizgowym jest zawarta w przedziale od O do 5 eV. Przedstawiono plan wykorzystania zbudowanego urządzenia do dalszych badań wpływu procesu triboemisji na proces inicjowania i przebiegu reakcji tribochemicznych.

Słowa kluczowe

tribochemistry triboemission exoemission negative-ion concept NIRAM tribopolymerization

tribochemia triboemisja egzoemisja jony ujemne NIRAM tribopolimeryzacja

Wydawca

Stowarzyszenie Inżynierów i Techników Mechaników Polskich

Czasopismo

Tribologia

Rocznik

2003

Tom

nr 1

Strony

103--121

Opis fizyczny

Bibliogr. 31 poz., rys.

Twórcy

autor

Molina G.J.

School of Technology, Georgia Southern University, Statesboro, GA 30460-8047, USA, e-mail: gmolina@gasou.edu

autor

Kajdas C.

ckajdas@zto.pw.plock.pl

Warsaw University of Technology, Institute of Chemistry at Plock, 09-400 Plock, Poland

autor

Furey M.J.

Department of Mechanical Engineering., Virginia Tech, Blacksburg, VA 24061-0238, USA, e-mail: mfurey@vt.edu

autor

Ritter A.L.

Department of Physics, Virginia Tech, Blacksburg, VA 24061-0435, USA, e-mail: aritter@vt.edu

Bibliografia

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Typ dokumentu

Bibliografia

Identyfikator YADDA

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