the combustion process of tio2- 2mg- c and 3tio2-4al-3c systems in a tubular furnace was investigated. tic has been synthesized by the magnesiothermic reaction from a mixture of compacted powders of tio2, mg and charcoal as starting materials in the presence and absence of nacl. the effects of temperature, pressure, and the stoichiometry ratio in the reaction yield have been studied. the result...

The value of the nitrogen compositional stability coefficient has been determined for alloys Fe-Cr-Mn-Mo-N system obtained by self-propagating synthesis, namely, aluminothermy under pressure. It is shown that heat treatment alloy containing 14.3 wt.% chromium, 12.2 manganese, 4.0 molybdenum and 0.92 at 1250°C 2 h leads to dissolution a pseudo-perlitic structure (ferrite-nitride mixture) complet...

This work explores the possibility of involving aluminothermy in processing donor-doped zinc oxide-based thermoelectrics by relying on local, strong exothermic effects developed during sintering, with a potential positive impact electrical and thermal transport properties. The strategy was exemplified using aluminium as dopant, due to its recognized ability generate additional, available charge...

A solid waste coming from the secondary aluminium industry was successfully vitrified in the ternary CaO-Al(2)O(3)-SiO(2) system at 1500 degrees C. This waste is a complex material which is considered hazardous because of its behaviour in the presence of water or moisture. In these conditions, the dust can generate gases such as H(2), NH(3), CH(4), H(2)S, along with heat and potential aluminoth...

The combustion process of TiO2- 2Mg- C and 3TiO2-4Al-3C systems in a tubular furnace was investigated. TiC has been synthesized by the magnesiothermic reaction from a mixture of compacted powders of TiO2, Mg and charcoal as starting materials in the presence and absence of NaCl. The effects of temperature, pressure, and the stoichiometry ratio in the reactio...