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Journal of Applied Mechanics and Technical Physics

2017 year, number 5

Synthesis of Diamond Structure from the Jet of the H2 + CH4 Mixture in a Cocurrent Axisymmetric Hydrogen Flow

A. K. Rebrov, A. A. Emel'yanov, M. Yu. Plotnikov, I. B. Yudin
Kutateladze Institute of Thermophysics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
Keywords: алмазные структуры, газоструйное осаждение, термическая активация, прямое статистическое моделирование, diamond structures, gas jet deposition, thermal activation, Direct Simulation Monte Carlo method


The flow of a hydrogen-methane mixture through heated coaxial cylindrical tungsten channels with a built-in tungsten wire is studied by the Direct Simulation Monte Carlo method. The purpose of the study is further development of the gas-phase method of deposition of diamond structures. The axial distributions of the concentrations of the components of the hydrogen-carbon mixture are calculated by means of solving a system of chemical kinetics equations. A series of experiments on deposition of diamond structures from various flows of the hydrogen-methane mixture is performed. The calculated results are compared with the experimental data. Based on these comparisons, it is concluded that numerical optimization of operation modes of gas-dynamic reactors can be used for deposition of diamond structures.