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Journal of Central South University of Technology

, Volume 11, Issue 4, pp 348–352 | Cite as

High temperature scaling of Ni-15Cu-5Al alloy in 1×105 Pa pure oxygen

  • Xiang Jun-huai Email author
  • Niu Yan 
  • Wu Wei-tao 
Article

Abstract

The oxidation of the ternary alloy Ni-15Cu-5Al in 1×105 Pa pure oxygen at 700 °C and 800 °C was studied. The results show that the behavior of the Ni-rich alloy is similar to that of the binary Ni-Al alloy with the same Al content in the form of an external NiO layer coupled to the internal oxidation of aluminium. The presence of 15% (mole fraction) Cu cannot modify substantially the values of relevant parameters affecting the transition from the internal to the external oxidation of aluminium. The presence of 5% Al reduces the oxidation rate of the corresponding Ni-Cu alloy during the whole oxidation stages, though 5% Al is still insufficient to form protective external alumina scales.

Key words

Ni-rich alloy high temperature oxidation ternary alloy 

CLC number

TG 146.4 

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Copyright information

© Central South University 2004

Authors and Affiliations

  1. 1.State Key Laboratory for Corrosion and Protection, Institute of Metal ResearchChinese Academy of SciencesShenyangChina
  2. 2.Department of Applied PhysicsJiangxi Science and Technology Normal UniversityNanchangChina

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