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Microstructure and Thermo-Mechanical Behavior of NiAl Coatings

  • G. Dehm (a1), J. Riethmüller (a1), P. Wellner (a1), O. Kraft (a2), H. Clemens (a3) and E. Arzt (a1)...

Abstract

In this study the thermo-mechanical behavior of a commercial Pt containing NiAl coating deposited on a Ni-base superalloy is compared with a Ni-rich NiAl coating sputter-deposited on a Si substrate. Both types of coatings possess high tensile room temperature stresses after thermal straining. The Pt-NiAl coating shows negligible plasticity as a result of solid solution and dispersion strengthening. In contrast, for the NiAl coatings on Si noticeable plasticity can be obtained if the film thickness exceeds the sub-micrometer range.

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Microstructure and Thermo-Mechanical Behavior of NiAl Coatings

  • G. Dehm (a1), J. Riethmüller (a1), P. Wellner (a1), O. Kraft (a2), H. Clemens (a3) and E. Arzt (a1)...

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