Premium
In‐Flight Reactions of Metallic Particles during Thermal Spraying
Author(s) -
Zhao L.,
HerbstDederichs C.,
Lugscheider E.
Publication year - 2002
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.200290005
Subject(s) - materials science , gas dynamic cold spray , thermal spraying , metallurgy , nitriding , coating , plasma , metal , thermal , particle (ecology) , temperature cycling , titanium , chemical reaction , atmospheric pressure plasma , chemical engineering , composite material , layer (electronics) , chemistry , thermodynamics , biochemistry , oceanography , physics , quantum mechanics , engineering , geology
During thermal spraying of metal materials reactions between the spray materials and the gaseous species from plasma gas, atomization gas or surrounding atmosphere occur. Some reactions like nitriding during reactive spraying are designed to improve coating properties, while other reactions like oxidation during atmospheric plasma spraying of stainless steels impair the coating properties. In this study, the reaction of titanium particles in‐flight during reactive plasma spraying and the reaction of the 316 L stainless steel in‐flight during HVOF spraying were investigated. It was found that the melting degree of the powders was essentially important for the reactions in‐flight. The convection movement within a molten particle significantly accelerated the reactions.