Open AccessRole of micro-factors on microstructure and on the tribological performance of HVOF coatings: A review
Author(s) -
Alok Vats,
Amar Patnaik,
Makkhan Lal Meena,
Dinesh Shringi
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1017/1/012010
Subject(s) - thermal spraying , tribology , materials science , microstructure , coating , porosity , deposition (geology) , corrosion , metallurgy , composite material , adhesion , paleontology , sediment , biology
Mechanical components, whether stationary or moving are subjected to wear and corrosion. A combined effect of these two is even more deleterious. Thermal spray technique proves to be an effective solution to address these issues. HVOF coatings owing to their inherent characteristics like high hardness, adhesion, density (porosity <1%) its provide enhanced mechanical and tribological performance and so are widely used across industries. Micro-factors like presence of pores, oxides and cracks, matrix and binder properties, addition of Cr, cohesive strength and boundary regions etc. do influence the coating behaviour, besides the deposition parameters. The objective of this paper is to review the effect of above mentioned factors on the wear and corrosive performance of the coatings for industrial and research viewpoint.