Synthesis of Highly Dispersed Zirconium Diboride for Fabrication of Special-Purpose Ceramic

Yu L. Krutskii, E. A. Maksimovskii, M. V. Popov, O. V. Netskina, T. M. Krutskaya, N. Yu Cherkasova, T. S. Kvashina, E. A. Drobyaz

Результат исследования: Научные публикации в периодических изданияхстатья

Аннотация

Reduction of zirconium dioxide with boron carbide and nanofibrous carbon in argon yielded a highly dispersed powder of zirconium diboride. Characteristics of zirconium diboride powders were examined by various analytical methods. The material obtained is represented by a single phase, zirconium diboride. Powder particles are for the most part aggregated. The average size of particles and aggregates is 10.9–12.9 μm with a wide size distribution. The specific surface area of the samples is 1.8–3.6 m2 g–1. The oxidation of zirconium diboride begins at a temperature of 640°C The optimal synthesis parameters were determined: ZrO2: B4C: C molar ratio of 2: 1: 3 (in accordance with stoichiometry), process temperature 1600–1700°C, synthesis duration 20 min.

Язык оригиналаанглийский
Страницы (с-по)1579-1585
Число страниц7
ЖурналRussian Journal of Applied Chemistry
Том90
Номер выпуска10
DOI
СостояниеОпубликовано - 1 окт 2017

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