Preparation of Composites from Al and Ti3AlC2 and its Tribo-Chemistry Reactions against Low Carbon Steel

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Al/Ti3AlC2 composites containing 50vol% Al were prepared with high purity of polycrystalline Ti3AlC2 and aluminum powders by pressureless-sintering route at temperatures of 700°C~ 800°C The tribological properties of the composites were investigated by sliding the composites block dryly against low carbon steel disk under high sliding speed. Before and after friction test, the morphology and phase analysis were observed by scanning electron microscope (SEM) and X-ray diffraction (XRD), separately. A definite tribo-glazing layer was found over the worn surface of the composite block, which was the results of tribo-chemical oxidation reaction and the cause forming it could be the high frictional temperature and the mechanical catabolism between the surface of Al/Ti3AlC2 and low carbon steel during sliding friction. The effect of Ti3AlC2 on tribological properties of Al/Ti3AlC2 composite and the possible tribo-chemical reaction mechanism on surface layer of Al/Ti3AlC2 were suggested.

Info:

Periodical:

Key Engineering Materials (Volumes 368-372)

Edited by:

Wei Pan and Jianghong Gong

Pages:

989-991

DOI:

10.4028/www.scientific.net/KEM.368-372.989

Citation:

Z. L. Zhang et al., "Preparation of Composites from Al and Ti3AlC2 and its Tribo-Chemistry Reactions against Low Carbon Steel", Key Engineering Materials, Vols. 368-372, pp. 989-991, 2008

Online since:

February 2008

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Price:

$35.00

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