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Microstructure, corrosive-wear and electrochemical performance of laser cladded NiTi–xAl2O3 coatings in 3.5%NaCl solution.
- Source :
-
Industrial Lubrication & Tribology . 2024, Vol. 76 Issue 5, p726-733. 8p. - Publication Year :
- 2024
-
Abstract
- Purpose: The aim of this study is to investigate the effects of Al2O3 mass fraction on the corrosive-wear and electrochemical performance of NiTi coating in 3.5% NaCl solution. Design/methodology/approach: The NiTi–xAl2O3 coatings were fabricated on S355 steel by laser cladding, and their corrosive-wear and electrochemical performance were investigated using a wear tester and electrochemical workstation, respectively. Findings: The wear rates of NiTi–5%Al2O3, –10%Al2O3 and –15%Al2O3 coatings are 82.33, 54.23 and 30.10 µm3 mm−1 N−1, respectively, showing that the wear resistance of NiTi–15%Al2O3 coating is the best. The wear mechanism is abrasive wear, which is attributed to the increase of coating hardness by the Al2O3 addition. The polarization resistance of NiTi–5%Al2O3, –10%Al2O3 and –15%Al2O3 coatings is 3,639, 5,125 and 10,024 O cm2, respectively, exhibiting that the NiTi–15% Al2O3 coating has the best corrosion resistance. Originality/value: The roles of Al2O3 in the corrosive-wear and electrochemical performance of NiTi–xAl2O3 coating were revealed through the experimental investigation. Peer review: The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-02-2024-0044/ [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00368792
- Volume :
- 76
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Industrial Lubrication & Tribology
- Publication Type :
- Academic Journal
- Accession number :
- 178044978
- Full Text :
- https://doi.org/10.1108/ILT-02-2024-0044