The resistance to localized corrosion in neutral chloride medium of an AISI 304l stainless steel implanted with nitrogen and neon ions

“…The XPS depth profiles of the natural oxide films developed on both unimplanted stainless steels showed that films were very similar and could be described as a mixed Cr-Fe oxide with the outermost layer enriched in iron species (Fe 2+ and Fe 3+ ). In agreement with other authors, [7,8] a significant enrichment in Ni 0 was detected at the oxide-metal interface. Only traces of Ni 2+ were detected on AISI 304L.…”

Section: Resultssupporting

confidence: 94%

Mo implantation in austenitic stainless steels: effect on the corrosion resistance in chloride acidic media

Abreu

Cristóbal

Figueroa

et al. 2010

Surface & Interface Analysis

View full text Add to dashboard Cite

The objective of this work is to investigate the effect of Mo implantation at a dose of 3.5 × 10 15 ions/cm 2 on the corrosion resistance on 304L and 316 austenitic stainless steels. Electrochemical measurements were used to investigate the corrosion behavior of the alloys in sulfuric acid in presence of chlorides. The obtained results show that Mo implantation at the considered dose induces an increase in the Cr/Fe ratio of the passive layer of both alloys, but its effect on the corrosion properties is not well defined.

show abstract

“…The Ar + etching induces only small changes in the 304L crystalline structure, in contrast to metal ion etching. A similar effect was observed for the implantation of another inert gas (Ne) on 304L steel and was related to the creation of a high density of dislocations in the crystalline structure [65]. On the other hand, the metal Ti and Zr almost disappeared from the sample surface after electrochemical tests, suggesting that their initial amounts may not have been sufficient to form a perennial Ti or Zr oxide layer.…”

Section: Characterization Of the Electrochemically Investigated Surfacesupporting

confidence: 60%

Surface Modification of 304L Stainless Steel and Interface Engineering by HiPIMS Pre-Treatment

et al. 2022

View full text Add to dashboard Cite

A clean and defect-free substrate/coating interface is required to guarantee good adhesion of coatings under service conditions. For this purpose, an etching pre-treatment using High-Power Impulse Magnetron Sputtering (HiPIMS) was performed to modify the surface of 304L stainless steel. The effect of three etching procedures on the substrate properties, such as corrosion resistance and adhesion, was investigated with unprecedented spatial resolution and spectroscopic details. Glancing angle X-ray diffraction showed modification in phase content but no neoformation after steel etching. X-ray photoelectron spectroscopy confirmed the presence of etchant species (6–7 at.%) on the extreme surface of the substrate. Transmission Electron Microscopy and Atomic Probe Tomography showed that the interface was less than a few nanometers wide. Polarization curves in a nitric acid solution at boiling temperature showed, for the first time, that the Ti+ and Zr+ etchings decreased the corrosion current density compared to the untreated original surface. Scratch-test measurements indicated better substrate/coating adhesion using HiPIMS metal ion etching. Electrochemical characterization revealed that Zr etching and thin coating improve the anti-corrosion properties of stainless steel in strong nitric acid conditions.

show abstract

The resistance to localized corrosion in neutral chloride medium of an AISI 304l stainless steel implanted with nitrogen and neon ions

Cited by 29 publications

References 21 publications

High frequency impedance spectroscopy study of passive films formed on AISI 316 stainless steel in alkaline medium

High frequency impedance spectroscopy study of passive films formed on AISI 316 stainless steel in alkaline medium

Mo implantation in austenitic stainless steels: effect on the corrosion resistance in chloride acidic media

Surface Modification of 304L Stainless Steel and Interface Engineering by HiPIMS Pre-Treatment

Contact Info

Product

Resources

About