Morphological study of nitrides of NbTi (50:50, by weight) alloy
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Elsevier B.V.
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Plates of NbTi (50:50, by weight) were nitrided in a nitrogen atmosphere in the temperature range 800-1000 °C for 15, 30, 60, 120 and 180 min. X-Ray diffraction and optical and electronic microscopy were used to characterize the samples. Two nitride layers were identified on the substrate: an external and continuous phase of TiN, named δ, and a deeper and discontinuous phase of Ti 2N, named ε{lunate}. The electron micrographs reveal the presence of paths rich in Nb which may be responsible for the diffusion of nitrogen into the matrix. © 1993.
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Journal of Alloys and Compounds, v. 194, n. 1, p. 53-57, 1993.
