[Kovove materialy - Metallic materials]
    Wed - November 13, 2024 - 18:39 No. of hits : 1798066 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 38 (2000), Issue 5

Microstructure of the plasma sprayed NiCrAlY coating isothermally exposed at 850 °C for 6 minutes
IZDINSKY, K., IVAN, J., ZEMANKOVA, M.
vol. 38 (2000), no. 5, pp. 329 - 338

Abstract
Results of structural studies performed with light microscopy and transmission electron microscopy on plasma sprayed NiCrAlY coating isothermally exposed at 850 °C for 6 minutes are presented in this paper. The applied thermal treatment led to the decomposition of initial phases and to precipitation of α-Cr and γ'-Ni3Al. It is shown that the precipitation of α-Cr and γ'-Ni3Al as well as the decomposition of martensitic NiAl obeyed orientation relationships. Dissolution of Ni5Y yttride was not observed. All the oxide inclusions remained amorphous and their transformation into crystalline structures is expected after longer exposures at 850 °C or at higher exposure temperatures.

Key words
NiCrAlY coating, microstructure, thermal treatment, TEM studies

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Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
The official abbreviation in accordance with JCR ISI is Kovove Mater.


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