Microstructure and oxidation resistance of aluminide layer produced on Inconel 100 nickel alloy by CVD method

Ryszard Sitek , Tomasz Bolek , Romuald Dobosz , Tomasz Płociński , Jarosław Mizera

Abstract

The study was concerned with heat-protection of the IN 100 nickel superalloy by covering it with a diffusive β-NiAl intermetallic layer produced by the CVD method. Oxidation resistance tests were conducted at 950 °C in air. The alloy samples, with and without the intermetallic layer, were subjected to 24 heating-cooling cycles each lasting for 24 h and then their oxidation resistance was compared. During the oxidation tests, the stress induced in the coatings was analyzed by the finite element method which was also used for monitoring the growth of the α-Al2O3 scale during the successive thermal cycles (birth & death element analysis). The aluminum oxide scale appeared to be continuous and compact. The stress level depended on the surface roughness of the interface between the intermetallic layer and the oxide scale and was the highest in the region of its surface peaks and the lowest in the valleys where it was compressive. The coatings composed of the diffusive β-NiAl intermetallic layer, about 11 μm thick, and the α-Al2O3 scale had a high thermal shock resistance and very good corrosion resistance. © 2016
Author Ryszard Sitek ZPM
Ryszard Sitek,,
- Division of Materials Design
, Tomasz Bolek ZPM
Tomasz Bolek,,
- Division of Materials Design
, Romuald Dobosz ZPM
Romuald Dobosz,,
- Division of Materials Design
, Tomasz Płociński ZPM
Tomasz Płociński,,
- Division of Materials Design
, Jarosław Mizera ZPM
Jarosław Mizera,,
- Division of Materials Design
Journal seriesSurface and Coatings Technology, ISSN 0257-8972
Issue year2016
Vol304
Pages584 - 591
Publication size in sheets0.5
Keywords in EnglishAluminide layer; Finite element method; Inconel 100; Oxidation resistance; STEM
DOIDOI:10.1016/j.surfcoat.2016.07.072
URL https://www.scopus.com/inward/record.uri?eid=2-s2.0-84979741980&partnerID=40&md5=802074a8216513b1f7fc0370c27f68d6
Languageen angielski
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4 Microstructure and oxidation resistance of aluminide layer produced on Inconel 100 nickel alloy by CVD method.pdf 2.66 MB
Score (nominal)35
ScoreMinisterial score [Punktacja MNiSW] = 35.0, 28-11-2017, ArticleFromJournal
Ministerial score (2013-2016) [Punktacja MNiSW (2013-2016)] = 35.0, 28-11-2017, ArticleFromJournal
Publication indicators WoS Impact Factor [Impact Factor WoS]: 2016 = 2.589 (2) - 2016=2.538 (5)
Citation count*2 (2018-06-17)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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