English, Article edition: SALT BATH OXINITRIDING OF GRAY CAST IRON M. AHMADI; M. TEIMOURI; M. ALIOFKHAZRAEE; ...

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Bookmark: http://trove.nla.gov.au/version/83597
Physical Description
  • article
Language
  • English

Edition details

Title
  • SALT BATH OXINITRIDING OF GRAY CAST IRON
Author
  • M. AHMADI
  • M. TEIMOURI
  • M. ALIOFKHAZRAEE
  • S. M. MOUSAVI KHOEE
Physical Description
  • article
Notes
  • Salt bath oxinitriding is a duplex surface treatment developed to improve tribological and corrosion properties of ferrous materials. In this research, gray cast iron samples were nitrided at the temperature range of 480°Câ580°C, and then oxidized in an oxidative salt bath. The phase composition of surface layer was identified by X-ray diffraction. Using a microhardness tester, hardness of nitrided gray cast iron was measured. Corrosion behavior of treated (nitrided and oxinitrided) samples was evaluated using potentiodynamic polarization technique in 3.5% NaCl solution. XRD analyses indicate that the surface layer in nitrided and oxinitrided samples is composed of ε-iron nitride (Fe2-3N) and magnetite (Fe3O4), respectively. Results show that the corrosion resistance of gray cast iron can be improved up to 170%.
  • Salt bath nitriding, oxinitriding, gray cast iron, corrosion
  • RePEc:wsi:srlxxx:v:15:y:2008:i:05:p:669-674
Language
  • English
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