High Temperature Oxidation of Superalloys in Steam Environment

  • Zhiyuan Liang
  • Miao Yu
  • Yong Gui
  • Preet Singh
  • Qinxin Zhao
Conference paper

Abstract

High temperature oxidation of superalloys in steam environment was studied. The experimental results showed that the oxidation resistance of the superalloys in steam environment was superior to heat resistant steel HR3C. Only the oxide scale formed on Super 304H steel was spalled at 800 °C. The oxide scales formed on superalloys Haynes 282 were composed of an external oxide layer of TiO2 and Cr2O3 and an internal oxide layer of Al2O3, TiO2 and Cr2O3. A uniform MnCr2O4 and Cr2O3 formed at the surface of superalloys Haynes 120 and Haynes 625. It was concluded that Cr and Ni improved the oxidation resistance in steam environment. The penetration depth of internal oxides was decided by the contents of Al and Ti. Finally, the oxidation resistance index of superalloys was comprehensively evaluated by the weight gain, oxide scale thickness and Cr depletion depth.

Keywords

Steam oxidation Microstructure Superalloys 

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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  • Zhiyuan Liang
    • 1
  • Miao Yu
    • 1
  • Yong Gui
    • 1
  • Preet Singh
    • 2
  • Qinxin Zhao
    • 1
  1. 1.Xi’anChina
  2. 2.AtlantaUSA

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