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Metallurgical and Materials Transactions B

, Volume 48, Issue 1, pp 642–654 | Cite as

Corrosion Performance of Fe-Based Alloys in Simulated Oxy-Fuel Environment

  • Zuotao ZengEmail author
  • Ken Natesan
  • Zhonghou Cai
  • David L. Rink
Article

Abstract

The long-term corrosion of Fe-based alloys in simulated oxy-fuel environment at 1023 K (750 °C) was studied. Detailed results are presented on weight change, scale thickness, internal penetration, microstructural characteristics of the corrosion products, and the cracking of scales for the alloys after exposure at 1023 K (750 °C) for up to 3600 hours. An incubation period during which the corrosion rate was low was observed for the alloys. After the incubation period, the corrosion accelerated, and the corrosion process followed linear kinetics. Effects of alloy, CaO-containing ash, and gas composition on the corrosion rate were also studied. In addition, synchrotron nanobeam X-ray analysis was employed to determine the phase and chemical composition of the oxide layers on the alloy surface. Results from these studies are being used to address the long-term corrosion performance of Fe-based alloys in various coal-ash combustion environments and to develop methods to mitigate high-temperature ash corrosion.

Keywords

Corrosion Rate Oxide Scale SiO2 Layer Alloy 602CA Coal Power Plant 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

This work was supported by the U.S. Department of Energy, Office of Fossil Energy, Advanced Research Materials Program, Work Breakdown Structure Element ANL-4, under Contract DE-AC02-06CH11357. Use of the Advanced Photon Source, the Center for Nanoscale Materials, and the Electron Microscopy Center for Materials Research was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract DE-AC02-06CH11357.

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Copyright information

© The Minerals, Metals & Materials Society and ASM International 2016

Authors and Affiliations

  • Zuotao Zeng
    • 1
    Email author
  • Ken Natesan
    • 1
  • Zhonghou Cai
    • 2
  • David L. Rink
    • 1
  1. 1.Nuclear Engineering DivisionArgonne National LaboratoryLemontUSA
  2. 2.Advanced Photon SourceArgonne National LaboratoryLemontUSA

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