Open AccessInitiating Potential of Centrifugally Accelerated Metal Particles in the Inorganic Synthesis Reactions
Author(s) -
Г. И. Ксандопуло,
A. N. Baidel'dinova,
Kainzhamal Omarova,
Ardak Ainabаyev
Publication year - 2013
Publication title -
eurasian chemico-technological journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.227
H-Index - 9
eISSN - 2522-4867
pISSN - 1562-3920
DOI - 10.18321/ectj168
Subject(s) - adiabatic process , combustion , centrifugal force , materials science , endothermic process , self propagating high temperature synthesis , acceleration , ceramic , oxide , rotation (mathematics) , tungsten , metal , composite number , composite material , mechanics , chemistry , thermodynamics , metallurgy , physics , flow (mathematics) , classical mechanics , microstructure , geometry , adsorption , mathematics
The method of producing clusters of various metals by using self-propagating high-temperature synthesis (SHS) in the conditions of high-speed rotation is presented. The purpose of a study is development of the technology of the acceleration of strong- endothermic reactions and synthesis of ceramic materials and products. The task of a experimental study consists of the observation of the wave of combustion in the effective layer, the determination of the coordinate of its passage in the adiabatic regime and the arrangement here of less effective layer for the purpose of obtaining gradient and composite materials. The possibility of the output of the process of the combustion of oxide system to the adiabatic regime is shown. The limits of inflammability in the centrifugal-force field come down by the attack of the adiabatic wave of combustion by accelerating the front of combustion with the molten particles of metal, returned into the zone of reaction by centrifugal acceleration. The potential possibility of using the centrifugal efforts for the production of ceramic materials was demonstrated for the multilayer aluminothermic systems. The speed of motion of metal particles under the influence of centrifugal acceleration is calculated. In the reactor of 30 cm long the speed of particles of tungsten reaches 94 m/s with a frequency of rotation of 3 000 rev/min received accelerated clusters of metals that are considered as possible sources of initiation of the chemical processes having about MJ/mol of activation energy. This method was allowed to produce gradient materials.