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Fabrication Processing and Tribological Properties of Al2O3/TiFeCrWMoV Based High Temperature Self-Lubrication Composites

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Abstract:

Metal ceramic preforms were fabricated by vacuum sintering method in this work. Ti-Fe-Cr-W-Mo-V powder was used as the basic material, TiH2 and CaCO3 were used as the composite pore-forming material and Al2O3 was used as dispersal particles. The influences of fabricating parameters on infiltrating qualities and mechanical properties were discussed. The friction and wear behaviors under high temperature were investigated by pin on disk wear tester. Moreover, the microstructure and the worn surface morphology of the preforms and the composites were analyzed using scanning electron microscope (SEM) and energy dispersive spectrometer (EDS). The experimental results showed that the composite, which was sintered at 1230 oC with a holding time of 60min and was infiltrated by melt solid lubricant under a pressure of 5 MPa at 750 oC, exhibits good friction and wear behavior. The composites composed of metal ceramic hard phase and multi-lubricant soft phase with an interpenetrating network exhibit good self-lubricating properties, high obdurability and wear resistance over a range of temperature at 400-700 oC.

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Periodical:

Applied Mechanics and Materials (Volume 364)

Pages:

711-715

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.364.711

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Online since:

August 2013

Authors:

Ying Han, Yan Jun Wang, Shou Ren Wang

Keywords:

Composite, Friction, Metal Ceramics, Self-Lubrication, Wear Behavior

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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