Surface properties of the nitrided -Ti-48Al-2Nb-0.7Cr intermetallic alloy after cyclic oxidation was characterized. The nitride coating was successfully deposited after annealing of the Ti-48Al-2Nb-0.7Cr intermetallic alloy at 900 °C under nitrogen atmosphere. As a result, the nitride layer on the Ti-48Al-2Nb-0.7Cr alloy significantly improved its cyclic oxidation and the best performance was recorded at 900 °C after 900 h (h). Atomic force spectroscopy (AFM) analysis confirmed the surface multi-layers with surface roughness and a spectral root mean square (RMS) amplitude of 165 nm. Microstructures were analysed employing scanning electron microscopy (SEM) equipped with energy dispersion spectroscopy (EDS) for micro-analysis. Phase analysis was conducted using X-ray diffraction (XRD).
Reference:
Mathabathe, M.N., Govender, G., Siyasiya, C., Mostert, R. & Bolokang, A.S. 2019. Surface characterization of the cyclically oxidized -Ti-48Al-2Nb-0.7Cr alloy after nitridation. Materials Characterization, 154. http://hdl.handle.net/10204/12700
Mathabathe, M. N., Govender, G., Siyasiya, C., Mostert, R., & Bolokang, A. S. (2019). Surface characterization of the cyclically oxidized -Ti-48Al-2Nb-0.7Cr alloy after nitridation. Materials Characterization, 154, http://hdl.handle.net/10204/12700
Mathabathe, Maria N, Gonasagren Govender, CW Siyasiya, RJ Mostert, and Amogelang S Bolokang "Surface characterization of the cyclically oxidized -Ti-48Al-2Nb-0.7Cr alloy after nitridation." Materials Characterization, 154 (2019) http://hdl.handle.net/10204/12700
Mathabathe MN, Govender G, Siyasiya C, Mostert R, Bolokang AS. Surface characterization of the cyclically oxidized -Ti-48Al-2Nb-0.7Cr alloy after nitridation. Materials Characterization, 154. 2019; http://hdl.handle.net/10204/12700.
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