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- Title
Enhanced Pitting Corrosion Resistance of Nanostructured AISI 304 Stainless Steel via Pipe Inner Surface Grinding Treatment.
- Authors
Han, Xiaolei; Wei, Ping; Zhao, Yiming; Wang, Zuohua; Li, Changji; Wu, Xinqiang; Zhang, Hongwang
- Abstract
By means of a pipe's inner surface grinding, a single-phase nanostructured austenite was formed on the surface of an AISI 304 stainless steel. The electrochemical corrosion behavior was compared with a coarse-grained counterpart of identical surface roughness. Experimental results show that the nanostructured austenite shows a higher pitting potential and a wider passivation interval than those of its coarse-grained counterpart. The enhanced corrosion resistance was attributed to the fast diffusion of Cr within the nanostructure and, hence, the formation of a thicker passive film to efficiently protect the surface against the ion attack. This work provides insights into a simple processing method to improve the surface strength and pitting resistance of stainless steel.
- Subjects
STAINLESS steel; CORROSION resistance; STEEL pipe; STAINLESS steel corrosion; PITTING corrosion; ELECTROLYTIC corrosion; SURFACE roughness
- Publication
Nanomaterials (2079-4991), 2023, Vol 13, Issue 2, p318
- ISSN
2079-4991
- Publication type
Article
- DOI
10.3390/nano13020318