Yu. A. Kuznetsov, D. D. Yakovlev, A. V. Dobychin, A. A. Gribakin, S. I. Matyukhin, I. N. Kravchenko
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引用次数: 0
Abstract
A mathematical model of coating formation during supersonic gas-flame spraying (SGFS) is presented, describing the physical processes occurring at the microscopic level when particles of the sprayed material impact the substrate, forming splats. The influence of melt solidification processes on the splat size due to the heat exchange with the substrate is studied. A relationship between the technological parameters of spraying and the performance characteristics of the coating is established. It is shown that the porosity of the coating for poorly wetting materials is inversely proportional to the cube of the flattening factor. Recommendations for optimizing spraying technology (by increasing particle velocity, improving wettability, controlling substrate temperature to reduce thermal stress and minimize porosity) are formulated.
期刊介绍：
Technical Physics is a journal that contains practical information on all aspects of applied physics, especially instrumentation and measurement techniques. Particular emphasis is put on plasma physics and related fields such as studies of charged particles in electromagnetic fields, synchrotron radiation, electron and ion beams, gas lasers and discharges. Other journal topics are the properties of condensed matter, including semiconductors, superconductors, gases, liquids, and different materials.
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