Synthesis and Characteristics of Ultra-Fine Superconducting Powders in the Nb–N, Nb–N–C, Nb–Ti–N–C systems

Plasma Synthesis of Nanoparticles

“…It may be interesting to realize that high-temperature plasma applications are perhaps driven with microwave power sources, too 19) .…”

“…This design with two consecutive inputs for precursors allows the production of something like coated nanoparticles. [30][31][32][33][34] laser processes working with gaseous targets. These processes have in common that the beam of a laser is focused to a spot.…”

Facile synthesis of superconducting NbN nanoparticles

“…Therefore, the synthesis of nitrides in general is more difficult than the synthesis of the corresponding oxides. In the last decades, many new synthesis methods for producing transition metal nitrides nanoparticles have been developed including benzene-thermal reaction [9], the microwave discharge method [10], plasma-gas-condensation-type cluster deposition [11], ammonolysis of sulfide [2], bromide [3], thermal decomposition of metallo-organic intermediates [4], reaction of lithium amides and chlorides [5], activated reactive evaporation [12], solid-state metathesis [13], combustion synthesis under high nitrogen pressure-temperature and mechanical alloying of the reactants in the presence of nitrogen flow [14,15]. Compared with the above methods, the arc-discharge technique with the advantages of simplicity, low-cost and high-purity in practical applications has been used to synthesize different kinds of nanoparticles e.g., transition metal nanoparticles [16].…”

Promotional Effect of Iron for the Nitridation of Niobium Oxide to Niobium Nitride

“…A lot of work with ETMN catalysts has been performed [2][3][4][5][6][7][8][9][10], however, NbN has seldom been investigated, because of the difficulty in the preparation of high surface area forms [11]. It is well known that since the nitridation of bulk Nb 2 O 5 into NbN under an NH 3 atmosphere requires temperatures as high as 1470 K [12], its surface area tends to be low.…”