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High‐temperature oxidation of iron covered by electroless NiP coating: A GDOS depth profiling study
Author(s) -
Weiss Zdeněk
Publication year - 1992
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.740180910
Subject(s) - annealing (glass) , materials science , coating , austenite , metallurgy , diffusion barrier , oxide , nickel , analytical chemistry (journal) , kinetics , chemical engineering , layer (electronics) , chemistry , composite material , microstructure , physics , engineering , chromatography , quantum mechanics
Steel samples coated by electroless nickel were annealed in air. Oxide growth kinetics and iron diffusion through the structure were investigated by glow discharge optical emission spectroscopy (GDOS) depth profiling. Protection against high‐temperature oxidation was found to be given mostly by the austenitic interdiffusion layer formed at the interface between the substrate and the NiP film during annealing of the sample, which acts as a diffusion barrier for diffusion of iron to the surface.