Aluminothermic reduction of K 2 TiF 6 in the presence of C, B, or N 2 was investigated as a low exothermic combustion process for synthesizing nanoparticles of titanium ceramics such as TiC, TiB 2 , and TiN. Sample pellets were prepared by mixing powders of K 2 TiF 6 , Al, and non-metal (C, B) powders in stoichiometric ratios. Experiments were conducted at room temperature under either an Ar or N 2 atmosphere. The combustion parameters were estimated from the temperature-time profiles, measured in the combustion wave using thermocouples. The reaction drastically proceeds within seconds, raising the temperature to 890-1170 C. The size of TiC, TiB 2 , and TiN nanoparticles prepared by the developed approach were, respectively, 5-30 nm, 10-60 nm, and 70-100 nm.
Effect of Zr concentration on the microstructure of Al and the magnetoresistance properties of the magnetic tunnel junction with a Zr-alloyed Al-oxide barrier
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