Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Microstructure and Corrosion Properties of AlCrFeCoNi High-Entropy Alloy Coatings Prepared by HVAF and HVOF
Materials and Surface Engineering Group, Institute of Materials Science and Engineering, Chemnitz University of Technology, Chemnitz, (DEU).
Materials and Surface Engineering Group, Institute of Materials Science and Engineering, Chemnitz University of Technology, 09107, Chemnitz, (DEU).
Materials and Surface Engineering Group, Institute of Materials Science and Engineering, Chemnitz University of Technology, 09107, Chemnitz, (DEU).
Materials and Surface Engineering Group, Institute of Materials Science and Engineering, Chemnitz University of Technology, 09107, Chemnitz, (DEU).
Show others and affiliations
2022 (English)In: Journal of thermal spray technology (Print), ISSN 1059-9630, E-ISSN 1544-1016, no 1-2, p. 247-255Article in journal (Refereed) Published
Abstract [en]

High-entropy alloys (HEAs) represent an innovative development approach for new alloy systems. These materials have been found to yield promising properties, such as high strength in combination with sufficient ductility as well as high wear and corrosion resistance. Especially for alloys with a body-centered cubic (bcc) structure, advantageous surface properties have been revealed. However, typical HEA systems contain high contents of expensive or scarce elements. Consequently, applying them as coatings where their use is limited to the surface represents an exciting pathway enabling economical exploitation of their superior properties. Nevertheless, processing conditions strongly influence the resulting microstructure and phase formation, which in turn has a considerable effect on the functional properties of HEAs. In the presented study, microstructural differences between high-velocity oxygen fuel (HVOF) and high-velocity air fuel (HVAF) sprayed coatings of the alloy AlCrFeCoNi are investigated. A metastable bcc structure is formed in both coating processes. Precipitation reactions are suppressed by the rapid solidification during atomization and by the relatively low thermal input during spraying. The coating resistance to corrosive media was investigated in detail, and an improved passivation behavior was observed in the HVAF coatings. 

Place, publisher, year, edition, pages
Springer, 2022. no 1-2, p. 247-255
Keywords [en]
Air; Aluminum alloys; Aluminum corrosion; Chromium alloys; Cobalt alloys; Corrosion resistance; Corrosive effects; Crystal structure; Entropy; High-entropy alloys; HVOF thermal spraying; Iron alloys; Microstructure; Rapid solidification; Wear resistance, Body-centered cubic (bcc) structure; Development approach; Functional properties; High velocity air fuels; High velocity oxygen fuel(HVOF); Precipitation reaction; Processing condition; Wear and corrosion resistance, Sprayed coatings
National Category
Manufacturing, Surface and Joining Technology
Research subject
Production Technology
Identifiers
URN: urn:nbn:se:hv:diva-17471DOI: 10.1007/s11666-021-01255-2ISI: 000694622600002Scopus ID: 2-s2.0-85114623447OAI: oai:DiVA.org:hv-17471DiVA, id: diva2:1595717
Note

cited By 0

Available from: 2021-09-20 Created: 2021-09-20 Last updated: 2023-01-25Bibliographically approved

Open Access in DiVA

fulltext(1621 kB)252 downloads
File information
File name FULLTEXT01.pdfFile size 1621 kBChecksum SHA-512
a64342759e96a78ba7ce0a3e68d2890f25f56bf228263fb97679101e866ed973190d9acb542ad4e2615ec708fa135320c4f3095316509cb191c55d4906e49ac6
Type fulltextMimetype application/pdf

Other links

Publisher's full textScopus

Authority records

Björklund, StefanJoshi, Shrikant V.

Search in DiVA

By author/editor
Björklund, StefanJoshi, Shrikant V.
By organisation
Division of Subtractive and Additive Manufacturing
In the same journal
Journal of thermal spray technology (Print)
Manufacturing, Surface and Joining Technology

Search outside of DiVA

GoogleGoogle Scholar
Total: 252 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 72 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf