Structure of ceramics produced through high-temperature nitridation of hafnium foil

K. B. Kuznetsov; I. A. Kovalev; A. I. Ogarkov; S. V. Shevtsov; S. V. Kannykin; A. S. Chernyavskii; K. A. Solntsev

doi:10.1134/S0020168517040100

Structure of ceramics produced through high-temperature nitridation of hafnium foil

Authors: Kuznetsov K.B.¹, Kovalev I.A.¹, Ogarkov A.I.¹, Shevtsov S.V.¹, Kannykin S.V.², Chernyavskii A.S.¹, Solntsev K.A.¹
Affiliations:
1. Baikov Institute of Metallurgy and Materials Science
2. Voronezh State University
Issue: Vol 53, No 4 (2017)
Pages: 424-428
Section: Article
URL: https://journals.rcsi.science/0020-1685/article/view/158208
DOI: https://doi.org/10.1134/S0020168517040100
ID: 158208

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Abstract

The high-temperature hafnium nitridation process, with HfN_x formation, comprises two stages. With increasing nitridation temperature and time, the lattice parameter of the nitride decreases. The observed discrete nucleation of nitride microcrystals on the surface is a consequence of metal diffusion through an amorphous carboxynitride. No structural defects were detected by high-resolution transmission electron microscopy in selected areas.