Synthesis of Nanosized FeS, CoS and NiS Crystals
in a Wave of Flameless RDX Combustion
Yu. M. Mikhailova, V. V. Aleshina, *, L. V. Zhemchugovaa, A. V. Bakeshkoa, and D. Yu. Kovalevb, **
a Institute of Problems of Chemical Physics (IPCP), Russian Academy of Sciences, Chernogolovka, 142432 Russia
b Merzhanov Institute of Structural Macrokinetics and Materials Science (ISMAN),
Russian Academy of Sciences, Chernogolovka, 142432 Russia
Correspondence to: *e-mail: vva@icp.ac.ru
Correspondence to: **e-mail: kovalev@ism.ac.ru
Received 31 May, 2021
Abstract—Thermochemical interactions of Fe, Co and Ni precursors with thiourea, ammonium thiocyanate, and sulfur in the wave of flameless combustion of RDX in ballasted systems were explored. In case of thiourea or ammonium thiocyanate as a source of sulfur, combustion-synthesized sulfides CoS, NiS and oxides Fe2O3, Fe3O4 turn encapsulated in a viscous material formed upon thermal decomposition of organic binder and sulfur-containing compounds. The replacement of thiourea or ammonium thiocyanate by elemental sulfur afforded for the combustion synthesis of FeS, CoS, and NiS powders with a specific surface of 37–72 m2/g.
Keywords: RDX, combustion, nanosized particles, Fe, Co, Ni sulfides
DOI: 10.3103/S1061386221040063