Investigation on Tribological Properties of the Pre-oxidized Ti{sub 2}AlN/TiAl Composite

Journal Article · Sun Apr 15 04:00:00 EDT 2018 · Journal of Materials Engineering and Performance

DOI:https://doi.org/10.1007/S11665-018-3263-4· OSTI ID:22860576

Wang, Daqun; Sun, Dongli; Han, Xiuli; Wang, Qing; Wang, Guangwei ^[1]

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1. Harbin Institute of Technology, School of Materials Science and Engineering (China)

Different oxidation layers on the Ti{sub 2}AlN/TiAl substrate which was fabricated by in situ synthesis were prepared through thermal oxidation process. The microstructure, phase identification and elements distribution of the oxidation layers were analyzed. The tribological performance of pre-oxidized composites against Si{sub 3}N{sub 4} ball at 25 and 600 °C, as well as the effect of pre-oxidation layers on tribological performance was systematically investigated. The results show that, compared to Ti{sub 2}AlN/TiAl, the pre-oxidized composites present more excellent tribological properties, especially the wear resistance at 600 °C. It is a significant finding that, different from severe abrasive wear and plastic deformation of Ti{sub 2}AlN/TiAl, the tribo-films formed by the pre-oxidation layers on the worn surface of pre-oxidized composites weaken abrasive wear and suppress the development of plastic deformation to protect the underlying composite substrate from wear. Moreover, the stable cooperation on the interface between tribo-films and Si{sub 3}N{sub 4} ball results in the relatively steady friction coefficient.

• OSTI ID: 22860576
• Journal Information: Journal of Materials Engineering and Performance, Journal Name: Journal of Materials Engineering and Performance Journal Issue: 4 Vol. 27; ISSN 1059-9495; ISSN JMEPEG
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABRASIVES
ALUMINIUM COMPOUNDS
BINARY ALLOY SYSTEMS
COMPOSITE MATERIALS
DISTRIBUTION
FILMS
FRICTION FACTOR
LAYERS
MATRIX MATERIALS
MICROSTRUCTURE
OXIDATION
PLASTICITY
SILICON NITRIDES
SUBSTRATES
SURFACES
SYNTHESIS
TERNARY ALLOY SYSTEMS
TITANIUM COMPOUNDS
TRIBOLOGY
WEAR RESISTANCE