Abstract
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.
Original language | English |
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Pages (from-to) | 1579-1585 |
Number of pages | 7 |
Journal | Russian Journal of Applied Chemistry |
Volume | 90 |
Issue number | 10 |
DOIs | |
Publication status | Published - 1 Oct 2017 |
Keywords
- ZRB2 POWDER
- TEMPERATURE SYNTHESIS
- BORO/CARBOTHERMAL REDUCTION
- BOROTHERMAL REDUCTION
- METAL BORIDES
- ZRO2
- SHS
- PRECURSORS
- EVOLUTION
- TITANIUM