Open AccessMathematical modeling of the formation and decomposition of a metastable product during MSHS
Author(s) -
О. В. Лапшин
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1709/1/012016
Subject(s) - metastability , non equilibrium thermodynamics , thermodynamics , decomposition , chemical reaction , thermal decomposition , quenching (fluorescence) , materials science , chemistry , chemical physics , physics , organic chemistry , quantum mechanics , fluorescence
Synthesis and decomposition of nonequilibrium phases are studied in a thin-layer gas-free system that forms metastable products, using a developed mathematical model and numerical methods. The model uses the chemical transformation equation, which takes into account the possibility of the formation and decomposition of a metastable product, as well as the energy equation with the possibility of external heating and cooling of the reaction sample. The development of a chemical reaction is considered under two extremely different conditions: wave synthesis and thermal explosion. Characteristic modes of the process are found. The possibility of multiple synthesis of a metastable product, determined by external heat input and heat removal in a reacting condensed system, is shown. It is revealed that for the reaction wave propagation, three modes of formation and decomposition of metastable phases can take place: breaking, merging, and quenching.