Abstract
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The oxidation characteristics, composition profile and phase transition of Ti3SiC2 in the temperature range 20-1400��C have been investigated by in-situ neutron diffraction and secondary ion mass spectroscopy (SIMS). Anatase has been observed to form at ���600��C, rutile at ���750��C and cristobalite at ���1300��C. Depth-profiling results by SIMS and Vickers indentation have revealed a distinct gradient in composition and microhardness within the surface oxide layers.