Oxidation and nitriding tubes of Zr-1%Nb zirconium alloy
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Date
2016
Journal Title
Journal ISSN
Volume Title
Publisher
Lviv Polytechnic Publishing House
Abstract
The work presents results of saturation of Zr-1% Nb tubes after processing in oxygen- and nitrogen- containing gas environments. The distribution of micro-hardness in the
thickness of the tube and the thickness of the hardened layers, the weight gain was determined. It is found that the oxidation of the Zr-1%Nb alloy (Т = 650°С, РО2=2.6·10-1 Pа, τ = 3…20 h) makes a greater weight gain than nitriding (Т = 650°С, τ = 5…20 h). The state of the surface of the inside and outside of Zr-1%Nb tubes for fuel cladding depending of the processings time was shown. The differences in saturation of outside and inside of the tube was showed. In particular, the hardness of internal surface of the tube is smaller relative to the outside after oxidizing and nitriding was found. The results
of study of the outer and inner surface of fuel cladding in contact with gaseous environment containing oxygen and nitrogen are interesting for investigators of reactor materials.
Description
Keywords
zirconium alloy, oxygen, nirtrogen, surface hardnes, hardened layer, weight gain
Citation
Trush V. Oxidation and nitriding tubes of Zr-1%Nb zirconium alloy / Vasyl Trush, Alexander Luk’yanenko, Volodymyr Chvalbota // Litteris et Artibus : proceedings of the 6th International youth science forum, November 24–26, 2016, Lviv, Ukraine / Lviv Polytechnic National University. – Lviv : Lviv Polytechnic Publishing House, 2016. – P. 308–311. – Bibliography: 8 titles.