Oxidation behaviour of sputtered Ni-3Cr-20Al alloy

J Mater Sci Technol ›› 2000, Vol. 16 ›› Issue (01): 88-90.

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Oxidation behaviour of sputtered Ni-3Cr-20Al alloy

Guofeng CHEN, Hanyi LOU

State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, China

Received:1998-12-31 Revised:1999-04-02 Online:2000-01-28 Published:2009-10-10
Contact: Guofeng CHEN

Abstract

Abstract: The oxidation behavior of sputtered Ni-3Cr-20Al coating at 900 degrees C in air was investigated. A dense Al2O3 layer was formed on the sputtered Ni-3Cr-20Al coating after 200 h oxidation. However, owing to the segregation of Ni3Al during oxidation process at high temperature, the spinel NiAl2O4 was also formed in the Al2O3 layer. It was found that the formation of NiAl2O4 had no detrimental effect on the oxidation resistance of the sputtered Ni-3Cr-20Al coating due to the excellent adhesion shown by the Al2O3 and NiAl2O4 complex oxide scale.

Key words:

Guofeng CHEN, Hanyi LOU. Oxidation behaviour of sputtered Ni-3Cr-20Al alloy[J]. J Mater Sci Technol, 2000, 16(01): 88-90.

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Oxidation behaviour of sputtered Ni-3Cr-20Al alloy

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