Effect of interstitial carbon and nitrogen on corrosion of FeCoCrNi multi-principal element alloys made by selective laser melting
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
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Detail(s)
Original language | English |
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Pages (from-to) | 52-63 |
Journal / Publication | Journal of Materials Science and Technology |
Volume | 148 |
Online published | 30 Nov 2022 |
Publication status | Published - 10 Jun 2023 |
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DOI | DOI |
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Attachment(s) | Documents
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Link to Scopus | https://www.scopus.com/record/display.uri?eid=2-s2.0-85146292595&origin=recordpage |
Permanent Link | https://scholars.cityu.edu.hk/en/publications/publication(45efabbb-caf6-4112-8d57-e4aac834b9d0).html |
Abstract
The corrosion behaviors of selective laser melted (SLMed) FeCoCrNi multi-principal element alloys (MPEAs) with carbon or nitrogen addition in 0.5 M H2SO4 solution were investigated. Both C and N addition refined the grains and introduced a heterogeneous structure in SLMed FeCoCrNi MPEA, but they had opposite effects on the corrosion behavior. The doped carbon participated as nano-sized carbides in SLMed MPEA, and localized galvanic corrosion occurred, degrading the corrosion resistance. The doped nitrogen was gathered with chromium and formed CrN chemical clusters in SLMed MPEA, and a protective passive film with a higher Cr2O3/Cr(OH)3 ratio formed, which improved corrosion resistance.
Research Area(s)
- Selective laser melting, Interstitial element, Multi-principal element alloys, Acid corrosion
Citation Format(s)
Effect of interstitial carbon and nitrogen on corrosion of FeCoCrNi multi-principal element alloys made by selective laser melting. / Chen, Wenyu; Zhou, Rui; Li, Wanpeng et al.
In: Journal of Materials Science and Technology, Vol. 148, 10.06.2023, p. 52-63.
In: Journal of Materials Science and Technology, Vol. 148, 10.06.2023, p. 52-63.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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