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Corresponding Author

C-h Yeh(p8913558@knight.fcu.edu.tw)

Abstract

A PVD process-cathodic arc plasma ion plating was used to deposit Ni-Al films on Inconel 600 superalloy. The oxidation behaviors of PVD Ni-Al coating and the thermal sprayed CoCrAlY coatings were revealed and compared by performing cyclic thermal oxidation test at 1100 ℃ to evaluate its feasibility. Experimental results showed that the films with different compositions of Ni62Al38, Ni63Al37 and Ni69Al31 could be obtained when using Ni52Al48, Ni60Al40 and Ni70Al30 as targets, respectively. During the cyclic thermal oxidation test, the aluminum-rich Ni-Al films were beneficial to form an Al2O3 layer on the surface, which terminats oxidation rapidly to give a consequent oxidation mass change lower than that of thermal sprayed CoCrAlY coatings.

Keywords

Ni-Al intermetallic coatings, Thermal cycle oxidation, Bondcoat

Publication Date

2003-08-28

Online Available Date

2003-08-28

Revised Date

2003-08-20

Received Date

2002-11-21

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