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dc.contributor.author Camagu, Sigqibo T
dc.contributor.author Bolokang, Amogelang S
dc.contributor.author Muller, TFG
dc.contributor.author Motaung, David E
dc.contributor.author Arendse, CJ
dc.date.accessioned 2019-08-15T08:51:57Z
dc.date.available 2019-08-15T08:51:57Z
dc.date.issued 2019-06
dc.identifier.citation Camagu, S.T. et al. 2019. Surface characterization and formation mechanism of the ceramic TiO2-xNx spherical powder induced by annealing in air. Powder Technology, vol. 351, pp229-237 en_US
dc.identifier.issn 0032-5910
dc.identifier.issn 1873-328X
dc.identifier.uri https://doi.org/10.1016/j.powtec.2019.04.030
dc.identifier.uri https://www.sciencedirect.com/science/article/pii/S003259101930275X
dc.identifier.uri http://hdl.handle.net/10204/11094
dc.description Copyright: 2019 Elsevier. This is an abstract. The definitive version of the work is published in Powder Technology, Vol. 351, pp 229–237 en_US
dc.description.abstract Mechanism for the formation of titanium oxynitride (TiO(sub2)-(subx)N(subx)) on the surfaces of spherical Ti powder particles upon heat treatment in air at 500, 600, 700 and 800 °C was investigated. The results showed that the first at 500 °C a hexagonal closed packed (HCP) TiO(subx) film was formed while aTiO(sub2) film was observed after annealing at 600 °C and eventually a TiO(sub2)-(subx)-N(subx) layer coated the spherical Ti particles at 700 and 800 °C due to N diffusion within the TiO2 crystal lattice. The resulting surface structure was studied by means of x-ray diffraction (XRD) while the surface morphology of the powders was characterized using the scanning electron microscope (SEM) attached with energy dispersive x-ray spectroscopy (EDS) detector. The AFM images confirmed that when the N content increases (800 °C-heat treated sample) the powder loses its triangular grains (700 °C-annealed sample) to irregular shaped grains. en_US
dc.language.iso en en_US
dc.relation.ispartofseries Workflow;22476
dc.subject Titanium en_US
dc.subject TiO2-x-Nx en_US
dc.subject Oxidation en_US
dc.subject Characterization en_US
dc.subject Thermal analysis en_US
dc.title Surface characterization and formation mechanism of the ceramic TiO2-xNx spherical powder induced by annealing in air en_US
dc.type Article en_US


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