Wear mechanisms occuring in plastic gears

• Autorzy: Goffin B. , Legras R. , Debier D.
• Języki publikacji: EN

Abstrakty

EN

The surface and bulk of injection moulded spur gears made of glass fibres reinforced polyamide internally lubricated with polytetrafluoroethylene PTFE have been characterised before and after wear testing on a gear test rig. The use of irradiated PTFE proved to be essential to obtain the best wear behaviour. The evolution of surface morphology across testing time allowed to visualise the formation and breaking of a film layer between the two running gears. This film, formed through the melting of the polymers at the surface, plays an important role in polymer tribology in reducing the dry wear. In long lasting tests, the film is not only observed around the pitch line, but everywhere at the worn tooth surface. Generated wear debris could be parts of the film, broken through high shear and abrasive effect of fibre fragments, as confirmed by thermogravimetric and elemental analysis. The conclusions could be extended to various polyamide based composite gears. Running dissimilar materials against each other showed that the film is formed from the bulk of the gear. Therefore the film formation does not involve material transfer from one surface to its counterpart.

Słowa kluczowe

EN

polymer gear; wear mechanism; transfer film; dry wear behaviour; polymer composites

PL

polimery; kompozyty polimerowe; mechanizm zużycia

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2002
• Tom: Vol. 7, no 3
• Strony: 783--790
• Opis fizyczny: Bibliogr. 14 poz., rys., wykr.

Twórcy

autor

Goffin B.

• CERTECH (CEntre de Ressources TEchnologiques en Chimie) - UCL Zone Industrielle C, B-7180 Seneffe, BELGIUM

autor

Legras R.

• CERTECH (CEntre de Ressources TEchnologiques en Chimie) - UCL Zone Industrielle C, B-7180 Seneffe, BELGIUM

autor

Debier D.

• CERTECH (CEntre de Ressources TEchnologiques en Chimie) - UCL Zone Industrielle C, B-7180 Seneffe, BELGIUM

Bibliografia

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