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Influence of Nickel on the Oxidation Resistance at High Temperatures of Thin Chromium Coatings

Authors
  • Smola, Grzegorz1
  • Gawel, Richard1
  • Kyziol, Karol1
  • Miszczak, Maria1
  • Grzesik, Zbigniew1
  • 1 AGH University of Science and Technology, Faculty of Materials Science and Technology, Al. A. Mickiewicza 30, Kraków, 30-059, Poland , Kraków (Poland)
Type
Published Article
Journal
Oxidation of Metals
Publisher
Springer US
Publication Date
Feb 12, 2019
Volume
91
Issue
5-6
Pages
625–640
Identifiers
DOI: 10.1007/s11085-019-09899-w
Source
Springer Nature
Keywords
License
Green

Abstract

The oxidation behavior of four valve steels (X33CrNiMn23-8, X50CrMnNiNbN21-9, X53CrMnNiN20-8 and X55CrMnNiN20-8) covered with thin sputter-deposited coatings containing chromium and nickel was studied under isothermal and thermal shock conditions. It was determined that coated steels exhibit greater resistance against oxidation than steels with unmodified surfaces. This effect results from the formation of chromium-rich oxides (e.g., Cr2O3, NiCr2O4, MnCr2O4) during oxidation of the surface modified steel. These oxides exhibited better protective properties than the products grown on unmodified steels (namely Fe3O4 and Fe2O3). The entirety of the obtained experimental results confirms the possibility of increasing the scaling resistance of valve steels by using around 1-µm-thick chromium-rich protective Cr–Ni coatings.

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