Spectroscopic Investigations of 316L Stainless Steel under Simulated Inflammatory Conditions for Implant Applications: The Effect of Tryptophan as Corrosion Inhibitor/Hydrophobicity Marker

Święch, Dominika; Palumbo, Gaetano; Piergies, Natalia; Pięta, Ewa; Szkudlarek, Aleksandra; Paluszkiewicz, C.

doi:10.3390/coatings11091097

Cited by 10 publications

(8 citation statements)

References 72 publications

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“…The active domain referred to the metal dissolution (Eq. 8) [16]. The change in the shape observed is likely attributed to the formation of a thin passive protective surface film on the metal surface due to the presence of Ti, in agreement with the literature [12,23,25].…”

Section: Electrochemical Experimentssupporting

confidence: 89%

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Assessment of Foundry Chromite Sand Crushability under Thermal-Mechanical Loading

Kabasele,

Nyembwe,

Polzin

2022

Archives of Foundry Engineering

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A problem is defined to investigate the effect of titanium traces on the corrosion behaviour of low carbon steel. In theory titanium effects surface properties like abrasion resistance in medium carbon steels and corrosion resistance in low as well as medium carbon steels. The present research as indicated by the topic is aimed to experimentally mark the effect of titanium traces on corrosion resistance in the available low carbon steel specimens. The effect of microalloying with titanium (i.e.0.02wt.%) on the corrosion behavior of low carbon steel in a 3.5 wt.% NaCl solution was studied by electrochemical, SEM, and Raman spectroscopy techniques. The electrochemical results showed that the corrosion of the Tibearing steel improved by around 30% compared with the Ti-free steel. The titanium microalloying led to the formation of a more compact corrosion product layer on the metal surface. The SEM analysis showed that the Ti-bearing sample had a smoother surface compared with the Ti-free steel.

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Section: Electrochemical Experimentssupporting

confidence: 89%

“…The Raman measurements were performed by using an InVia Raman Spectrometer Renishaw equipped with a charge-coupled device (CCD) camera and the confocal microscope. The spectra were collected with a spectral resolution of 1 cm -1 and in the 4000-50 cm -1 spectral range in three different pints of the surface [16][17].…”

Section: Surface Analysismentioning

confidence: 99%

Assessment of Foundry Chromite Sand Crushability under Thermal-Mechanical Loading

Kabasele,

Nyembwe,

Polzin

2022

Archives of Foundry Engineering

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“…Raman spectra give a fingerprint of a molecule and can be analyzed for molecules in different states [30,31]. Raman scattering can be drastically enhanced for molecules adsorbed or in close proximity to the metallic surface, resulting in a very sensitive surface-enhanced Raman spectroscopy technique [32][33][34][35][36]. Vibration fingerprints depend on many parameters, i.e., that is, the molecular environment (pH of the buffer solution) [37,38] and properties of the metallic surface [39].…”

Section: Of 11mentioning

confidence: 99%

In Situ and Ex Situ Raman Studies of Cysteine’s Behavior on a Titanium Surface in Buffer Solution

et al. 2023

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In this paper, surface-enhanced Raman spectroscopy (SERS) was used to investigate the adsorption process of cysteine (Cys). Studies were carried out in the presence of phosphate-buffered saline solution (PBS), at pH 7.4, and acidified to pH 5, 3, and 1, on the surface of Ti for implant application. In situ SERS spectra obtained for the Cys/Ti solution system, after 24 h of immersion time, indicated that the buffer solution strongly influences the adsorption behavior of Cys on the Ti surface. This results in a decrease in Cys adsorption on the Ti surface, in the range of pH 7.4 to 3. The strong interaction between a sulfur atom of Cys and a Ti surface was observed only at pH = 1, under strongly acidic conditions. In contrast, ex situ SERS spectra recorded for the same samples but in a dried Cys/Ti system show a completely different behavior of Cys on the Ti surface. Formation of a disulfide (S-S) bond has occurred as a result of the dimerization or aggregation of Cys molecules on the Ti surface. Detailed analysis of the adsorption behavior of Cys on the Ti surface can be very important in the preparation of bioactive materials (i.e., coated by organic layers).

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“…In bulk form, Ti 20 Zr 20 Nb 20 Ta 20 Mo 20 HEA showed E corr = −607 ± 55 mV vs. SCE in PBS at 37 • C [30]. Furthermore, the present HEA showed superior corrosion resistance compared to 316L stainless steel at 37 • C in PBS [61].…”

Section: Solution-timementioning

confidence: 64%

Time-Resolved Corrosion Behavior of Transition-Metal-Based High-Entropy Alloy in Saline and Phosphate Buffer Solutions

Sarac

2023

Metals

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This study focuses on time-resolved surface modifications of a single-phase Ti25Zr25Nb15V15Ta20 high-entropy alloy (HEA) when immersed in 0.9 wt% NaCl and phosphate-buffer solutions (PBS) at 37 °C. A remarkable transition from high ionic diffusion to electron conduction was observed in PBS, whereas the existing conductivity in NaCl solution was further enhanced after 3 h of exposure. During in-situ testing, NaCl improved passivation conceived by the decrease in passivation-current density and increase in Tafel slope. Heterogeneously dispersed oxide particles with NaCl could have accounted for the moderate increase in conductivity while not affecting the capacitive behavior. The Tafel slope decreased after 2 h of immersion in PBS linked to K+ and P−3 accumulation on the surface. The pronounced change in the post-PBS treated sample was also revealed by a four-fold increase in HEA-electrolyte resistance. A visible decrease in the constant-phase-element parameter of the HEA-electrolyte interface after long-term PBS immersion indicated a rise in electrode conductivity and ionic build-up on the surface. The findings suggest that compared to PBS, the selected HEA has a faster passive-layer formation in NaCl with smaller changes in interface resistivity upon long-term immersion, which is promising for enhanced protein-adsorption rates and loading amount.

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Spectroscopic Investigations of 316L Stainless Steel under Simulated Inflammatory Conditions for Implant Applications: The Effect of Tryptophan as Corrosion Inhibitor/Hydrophobicity Marker

Cited by 10 publications

References 72 publications

Assessment of Foundry Chromite Sand Crushability under Thermal-Mechanical Loading

Assessment of Foundry Chromite Sand Crushability under Thermal-Mechanical Loading

In Situ and Ex Situ Raman Studies of Cysteine’s Behavior on a Titanium Surface in Buffer Solution

Time-Resolved Corrosion Behavior of Transition-Metal-Based High-Entropy Alloy in Saline and Phosphate Buffer Solutions

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