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Tribological properties of in situ Fe3Al-20 wt% Al2O3 composites.
- Source :
- Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology (Sage Publications, Ltd.); Jan2013, Vol. 227 Issue 1, p67-78, 12p
- Publication Year :
- 2013
-
Abstract
- The tribological properties of Fe3Al-20 wt% Al2O3 composites, prepared by means of mechanical alloying and plasma-activated sintering, were investigated under air atmosphere against GCr15 bearing steels from room temperature to 500 °C. It was found that the friction coefficient of the composites (at 200 °C/350 °C) decreased with increasing temperature and the value was lower than that of Fe3Al alloys at the same temperature, and the friction coefficient increased again at 500 °C. Moreover, the wear rates of all the pins and discs were low at the medium/high temperatures. The dominant wear mechanism of the composites is microplowing and a little oxidation wear at room temperature. However, at elevated temperatures, oxidation wear and a little microplowing are found to be the main wear mechanism. There is also spalling induced by microfracture at 500 °C. The in situ Fe3Al-20 wt% Al2O3 composites have excellent wear resistance at a wide temperature range. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13506501
- Volume :
- 227
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology (Sage Publications, Ltd.)
- Publication Type :
- Academic Journal
- Accession number :
- 84490500
- Full Text :
- https://doi.org/10.1177/1350650112455773