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A mathematical model of powder components oxidation during thermal spray process
Author(s) -
Kossenko Alexey,
Lugovskoy Alex,
Zinigrad Michael
Publication year - 2008
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1560/ijc.47.3-4.273
Subject(s) - chemistry , diffusion , thermal spraying , particle (ecology) , process (computing) , thermal , mass transfer , heat transfer , particle size , chemical engineering , degree (music) , thermodynamics , organic chemistry , chromatography , physics , oceanography , computer science , acoustics , engineering , operating system , geology , coating
A model developed on the basis of kinetic principles of mass transfer allows performing computer simulation of the oxidation of powder materials during the thermal spray process. Such simulation enables one to determine the oxidation degree of the powder. The calculation is based on determining quasi‐stationary oxygen diffusion flow on a flying particle. Calculations performed for various spray powders and various flammable gases demonstrate a significant decrease of the oxidation degree with the growth of the particle diameter and density of a spray powder. The calculation results were confirmed by experiments.