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Microstructure Characterization of Alloy 625 Deposited on Nickel Foam using Air Plasma Spraying
Author(s) -
Azarmi F.,
Saaedi J.,
Coyle T. W.,
Mostaghimi J.
Publication year - 2008
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.200700196
Subject(s) - materials science , microstructure , scanning electron microscope , superalloy , alloy , metallurgy , gas dynamic cold spray , substrate (aquarium) , energy dispersive x ray spectroscopy , nickel , coating , optical microscope , thermal spraying , composite material , oceanography , geology
Ni‐based superalloy 625 has been deposited on nickel foam by air plasma spraying (APS) using an optimized set of spraying parameters under two different substrate conditions. For condition (i) the substrate was not cooled during spraying and for condition (ii) the substrate constantly cooled using air jets during spraying. Microstructural characteristics of the as‐sprayed coating microstructure were examined by a combination of optical and scanning electron microscopy (SEM), energy dispersive X‐ray spectroscopy (EDS), image analysis, and X‐ray diffraction (XRD) analysis, and compared to those of the alloy 625 powder used for spraying.