Synthesis of nano-titanium diboride powders by carbothermal reduction |
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| Affiliation: | 1. Laboratory of Hydrides Investigation, Boreskov Institute of Catalysis SB RAS, Pr. Akademika Lavrentieva 5, Novosibirsk 630090, Russia;2. Laboratory of Quantum Chemistry and Spectroscopy, Institute of Solid State Chemistry UrB RAS, Pervomaiskaya Street 91, Ekaterinburg 620219, Russia;3. International Center of Aerophysical Studies, Institute of Theoretical and Applied Mechanics SB RAS, Institutskaya str. 4/1, Novosibirsk 630090, Russia;4. Laboratory of Perspective Combustion Technologies, Engineering School, Far Eastern Federal University, Vladivostok, Suhanova str. 8, Vladivostok 690950, Russia;1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, China;2. Institute for Advance Materials and Technology, University of Science and Technology Beijing, Beijing, 100083, China;3. Department of Physical Chemistry of Metallurgy, School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China |
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| Abstract: | The nano-sized titanium diboride particles were synthesized by carbothermal reduction process. In this study, carbothermal reduction process was used by controlling reaction rate and duration time. TiO2, B2O3 and carbon resin were used as starting materials with a molar composition; TiO2:B2O3:C = 1:2:5. The mixture was placed in a graphite crucible and pushed into a heating zone maintained at 1500 °C and Ar was flown for a period of 20 min. After reaction, the crucible was pulled out from the heating zone to cooling zone of the furnace for the rapid cooling. The average particle size of the agglomerated product was found to be ∼500 nm, which was composed with small primary particles of <100 nm in size. After milling, the large agglomerate was reduced to primary particles. |
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