Oxidation inhibition of 3D printed porous steel by ceria-activated multilayers

Zhipeng Zhou*, Venkata Karthik Nadimpalli, Aakil Raj Lalwani, Shu Wang, Yijing Shang, Zhihao Pan, David Bue Pedersen, Vincenzo Esposito*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

A 3D-printed porous 410 L steel support with a novel ceramic multi-coating is fabricated to improve the oxidation resistance of porous metal components for extreme conditions. Simplified support´s morphology with straight channels fabricated by laser powder bed fusion enhances the applicability of wet-chemical coating methods. A multi-coating method combining electrophoretic deposition and infiltration improves the ceramic/steel interface. Ceria-based coatings with catalytic activity towards H2O and O2 provide both physical and dynamic chemical protection mechanisms. Excellent electro-chemo-mechanical stability and superior corrosion resistance (0.26×10-15 g2 cm4 s-1) are shown at 750 °C in air-3% H2O for 122h.
Original languageEnglish
Article number111010
JournalCorrosion Science
Volume214
Number of pages11
ISSN0010-938X
DOIs
Publication statusPublished - 2023

Keywords

  • Ceria
  • Coating
  • Laser powder bed fusion
  • Oxidation inhibition
  • Stainless steels

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