Abstract
Burnishing process is considered as the finishing operation to improve surface characteristics of thermal sprayed coatings. The process can be successfully utilized to achieve refined surface layers with ultrafine grains on the surface. The dynamic recrystallization on the surface is achieved due to severe plastic deformation with burnishing process. The decrease in surface roughness and porosity can also be achieved with effectively utilizing the burnishing process. The increase in surface hardness on the surface of coating was due to the compressive residual stresses induced by burnishing operation. The current study reveals the comparative study of burnishing process with different burnishing speeds along with observation of microstructural changes on the surface of thermal spray coatings. The increase in temperature and burnishing forces are also measured to analyze their effect on burnishing properties.
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