Published July 2018 | Version v1
Journal article Metadata-only

Oxidation behaviour of Pt modified aluminized NiCrAlYSi coating on a Ni-based single crystal superalloy

Creators

  • 1. School of Materials Science and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei, 230026 (China)
  • 2. Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang, 110016 (China)

Description

Highlights: • Pt modified aluminized NiCrAlYSi coatings were prepared on Ni-based single crystal superalloy. • Pt modified aluminized NiCrAlYSi coatings consisted of Al-enriched outer layer and Cr-enriched internal layer. • The oxidation behaviour of Pt modified aluminized NiCrAlYSi coatings were investigated. • Addition of Pt decreased the oxidation rate and retarded the surface rumpling of coating. - Abstract: An aluminized NiCrAlYSi coating and Pt modified aluminized NiCrAlYSi coating were prepared on a Ni-based superalloy. Isothermal and cyclic oxidation behaviour of both coatings were investigated. The Pt modified aluminized NiCrAlYSi coating showed an enhanced oxidation resistance due to the presence of Pt decreasing the oxidation rate and improving the adherence of alumina scale. The addition of Pt in aluminized NiCrAlYSi coating inhibited the phase transformation from β to γ′. Besides, the surface rumpling of Pt modified aluminized NiCrAlYSi coating was suppressed as compared to the aluminized NiCrAlYSi coating.

Availability note (English)

Available from http://dx.doi.org/10.1016/j.corsci.2018.02.007

Additional details

Identifiers

DOI
10.1016/j.corsci.2018.02.007;
PII
S0010938X17318991;

Publishing Information

Journal Title
Corrosion Science
Journal Volume
139
Journal Page Range
p. 172-184
ISSN
0010-938X
CODEN
CRRSAA

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
51002310
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ALUMINIUM OXIDES; COATINGS; HEAT RESISTING ALLOYS; LAYERS; MONOCRYSTALS; OXIDATION; PHASE TRANSFORMATIONS; PLATINUM; SCANNING ELECTRON MICROSCOPY
Descriptors DEC
ALLOYS; ALUMINIUM COMPOUNDS; CHALCOGENIDES; CHEMICAL REACTIONS; CRYSTALS; ELECTRON MICROSCOPY; ELEMENTS; HEAT RESISTANT MATERIALS; MATERIALS; METALS; MICROSCOPY; OXIDES; OXYGEN COMPOUNDS; PLATINUM METALS; TRANSITION ELEMENTS

Optional Information

Copyright
Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.