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Segregation in some Nickel‐based hard‐facing alloys prepared by melt‐spinning
Author(s) -
HamarThibault Sylvaine,
Ajao John,
Lebaili Soltane
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.7401901116
Subject(s) - materials science , auger , auger electron spectroscopy , nickel , tungsten , alloy , melt spinning , carbon fibers , carbide , sputtering , transmission electron microscopy , microstructure , ribbon , analytical chemistry (journal) , metallurgy , crystallography , spinning , chemistry , composite material , atomic physics , thin film , nanotechnology , composite number , physics , chromatography , nuclear physics
The segregation of a series of nickel‐based alloys rapidly quenched by melt‐spinning has been investigated in order to understand the distribution of the elements. These alloys have complex composition with metallic (Ni, Cr, W) and non‐metallic elements (C, B, Si). The microstructure of the ribbons obtained by melt‐spinning are examined by transmission electron microscopy and Auger spectometry. Even though the Auger spectra obtained on the two surfaces of the ribbon are generally identical, they differ from each other on the structure in the energy domain covering the Auger peaks of boron, tungsten and carbon. After sputtering the carbon appears with a fine well‐resolved structure towards the low‐energy region with low‐intensity peaks at 260, 252 and 244 eV, as in stable or unstable carbides.