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Titanium aluminides have low surface hardness and poor tribological properties, which could limit their applications in such areas where contact and wear are involved, e.g. valves in an auto-engine. In this study, a γ-based titanium aluminide has undergone a series of thermal oxidation processing to produce an oxide layer on the aluminide surface. The mechanical properties, the scratch resistance,...
A surface modification technique, namely thermal oxidation (TO) treatment has been developed to improve the tribological properties of B2 iron aluminide. The composition, the microstructure and the mechanical properties, e.g. hardness and elastic modulus of the surface treated layers have been characterised using a number of analytical techniques including XRD, SEM, AFM and microindentation and nanoindentation...
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