Particle melting behavior during high-velocity oxygen fuel thermal spraying
作者： M. Ice , E. Lavernia
DOI: 10.1361/105996301770349547
关键词: Thermal spraying 、 Materials science 、 Metal powder 、 Porosity 、 Composite material 、 Volume fraction 、 Metallurgy 、 Particle size 、 Range (particle radiation) 、 Grain size 、 Particle
摘要: Particle melting behavior during high-velocity oxygen fuel (HVOF) thermal spraying was investigated using Inconel 625 powders. The powder characteristics and coating properties were scanning electron microscopy (SEM), x-ray, microhardness studies. Results indicated that the volume fraction of unmelted particles in coatings dependent on proportion within a specified size range, these experiments, 30 to 50 µm. This particle range primarily determined by temperature, which measured spraying. temperature significantly decreased as increased. values for containing predicted simple rule-of-mixtures equation case low particles. However, condition high particles, did not compare favorably with calculated values, probably due presence porosity, occurred form voids found among microstructure feedstock retained corresponding under certain spray conditions.
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