Open AccessProperties of protective NiCr coatings, deposited by Cold Spray technology
Author(s) -
Šárka Houdková,
Petra Šulcová,
Anna Keslová,
Kateřina Lencová,
Josef Duliškovič
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/1178/1/012020
Subject(s) - materials science , nichrome , tribology , thermal spraying , microstructure , gas dynamic cold spray , metallurgy , corrosion , porosity , nozzle , spray nozzle , composite material , coating , mechanical engineering , engineering
The NiCr coatings, deposited by modern Cold Spray technology, and by well-established Twin Wire Arc Spraying and High Velocity Oxygen Fuel technologies, was studied in terms of microstructure, mechanical, tribological and corrosion properties. Compared to other thermal spraying technologies, CS coatings achieve higher cohesive strength and associated tribological properties. The dense structure is responsible for the coatings’ high corrosion protection ability. The influence of CS technological parameters was found negligible, except the usage of nozzle for internal diameter spraying, which results to significant increase of coatings porosity.