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Fluidized bed CrN coating formation on prenitrocarburized plain carbon steel
journal contribution
posted on 2004-08-01, 00:00 authored by P King, R Reynoldson, Allan Brownrigg, John LongJohn LongCrN coatings were formed on plain carbon steel by prenitrocarburizing, followed by thermoreactive deposition and diffusion (TRD) in a fluidized bed furnace at 570 °C. During TRD, Cr was transferred from Cr powder in the fluidized bed to the nitrocarburized substrates by gas-phase reactions initiated by reaction of HCl gas with the Cr. The microstructural processes occurring in the white layer, caused by N diffusion toward the surface during this stage were studied. This study compares TRD atmospheres employing inert gas and HCl or inert gas, H2, and HCl. Surface characterization was performed by scanning electron microscopy (SEM), x-ray diffraction (XRD), and glow-discharge optical-emission spectroscopy (GDOES).
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Journal
Journal of materials engineering and performanceVolume
13Issue
4Pagination
431 - 438Publisher
SpringerLocation
New York, N.Y.Publisher DOI
ISSN
1059-9495Language
engPublication classification
C1 Refereed article in a scholarly journalCopyright notice
2004, ASM InternationalUsage metrics
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