Oxidation of Metals

, Volume 88, Issue 1–2, pp 203–210 | Cite as

Initial Oxidation Behavior of Ferritic Stainless Steel with Sputtered Mn–Cu Coating

  • Shujiang Geng
  • Qingqing Zhao
  • Hechang Wang
  • Fuhui Wang
Original Paper
  • 144 Downloads

Abstract

Initial oxidation behavior of SUS 430 steel with a sputtered Mn–Cu coating was investigated in air at 800 °C. It was found that Mn was preferrentially oxidized upon thermal exposure from 2 to 10 min. The surface scale mainly consisted of MnO inner layer and Mn3O4 outer layer, although a small amount of Fe was observable in the scale. In addition, CuO developed on the outer surface of the scale after 10 min of oxidation. However, the scale formed on the coated steel upon oxidation for 20–300 min was obviously different from that upon oxidation for 2–10 min. It was composed of a tri-layer containing a top layer of CuO, a middle layer of (Mn,Cu)3O4 with some Fe, and an inner layer of Cr-rich oxide from the outer surface to the interface between scale and steel. With increasing oxidation time, furthermore, the top layer of CuO thickened first and then became thin. The oxidation mechanism was discussed.

Keywords

Early stage Thermal exposure Steel with Mn–Cu coating Oxidation mechanism 

Notes

Acknowledgements

This research was sponsored by the National Natural Science Foundation of China (NSFC) under Grant No. 51371048 and the National Key Basic Research Program of China (973 Program, No. 2012CB625100).

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Copyright information

© Springer Science+Business Media New York 2017

Authors and Affiliations

  • Shujiang Geng
    • 1
    • 2
  • Qingqing Zhao
    • 1
  • Hechang Wang
    • 1
  • Fuhui Wang
    • 2
  1. 1.School of MetallurgyNortheastern UniversityShenyangChina
  2. 2.Institute of Metal ResearchChinese Academy of SciencesShenyangChina

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