The effects of passivation parameters on pitting potential of biomedical stainless steel

Petković, Dušan; Madić, Miloš; Radenković, Goran

doi:10.2298/ciceq151127020p

Cited by 5 publications

(8 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For this specimen, the positive effect of the high-temperature oxides chemical removal was registered [ 16 , 17 ]. Nitric acid as a part of the pickling solution could strengthen the passive surface film [ 30 , 31 , 32 ], which partially retained its protectiveness. This was reflected in the curve with a narrow passivity region.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Corrosion Behavior of Sensitized AISI 304 Stainless Steel in Acid Chloride Solution

et al. 2022

View full text Add to dashboard Cite

Corrosion resistance of sensitized austenitic stainless steel (SS) in chloride environments is currently the subject of numerous studies. Most of them are focused on neutral chloride solutions at room temperature and the experiments are carried out on ground stainless steels surfaces. This paper deals with the corrosion behavior of sensitized AISI 304 stainless steel in acid 1 M chloride solution (pH = 1.1) at the temperatures of 20 ± 3 °C and 50 °C. The specimens after sensitization are tested as covered by high-temperature surface oxides (“heat tinted”), and also after their chemical removal to assess the impact of the surface state on corrosion resistance. Potentiodynamic polarization (PP) and exposure immersion test are used as the independent corrosion tests. Microstructure before/after exposure immersion test is evaluated by optical microscopy (OM) and SEM. The results obtained showed that sensitization significantly conditions corrosion regardless of the removal of high-temperature oxides, and the elevated temperature mainly acts as its accelerating factor.

show abstract

Section: Resultsmentioning

confidence: 99%

“…This was reflected in the curve with a narrow passivity region. The authors [ 30 , 31 , 32 ] recorded that nitric acid passivation contributes to the changes in the surface chemistry by oxidation of chromium and dissolution of iron oxides. The result is an increase in the Cr/Fe ratio.…”

Section: Resultsmentioning

confidence: 99%

Corrosion Behavior of Sensitized AISI 304 Stainless Steel in Acid Chloride Solution

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The pitting corrosion in stainless steel was explored utilizing statistical and ANN modeling of AISI 316 LVM passivation process, which aims to provide a passive protective layer on the steel surface for biomedical applications 28 . In this case, pitting corrosion and passivation were used as variables for the models.…”

Section: Introductionmentioning

confidence: 99%

Neural network based corrosion modeling of Stainless Steel 316L elbow using electric field mapping data

Memon

Imran

Alhems

2023

Preprint

View full text Add to dashboard Cite

Stainless steel (SS) is used in many industrial applications that demand superior corrosion resistance. Modeling its corrosion behavior in common structural and various operational scenarios is beneficial to provide wall-thickness (WT) information, thus leading to a predictive asset integrity regime. In this spirit, modeling of SS 316L corrosion behavior using artificial neural networks (ANNs) is presented, whereby saline water at different concentrations is flown through an elbow structure at different flow rates and salt concentrations. Voltage, current, and temperature data are recorded hourly using electric field mapping (EFM) pins installed on the elbow surface and used for training the model. The performance of corrosion modeling is verified by comparing the predicted WT with actual measurements obtained from experimental tests. Moreover, a concise account of the observed scale formation is also reported.‏

show abstract

“…AISI 316L is the Cr-Ni-Mo grade of austenitic stainless steel (SS) widely used in the medical field preferred for its excellent corrosion resistance and appropriate mechanical properties [ 1 , 2 , 3 , 4 , 5 ]. Due to the high-quality passive surface film, AISI 316L exhibits exceptional resistance to general corrosion in oxidation environments [ 6 , 7 , 8 , 9 ]. Molybdenum addition suppresses a susceptibility to the localized corrosion, such as pitting and crevice corrosion in chloride environments [ 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

“…Pits can grow in size and depth, compromising the integrity and strength of the stainless steel. This can result in premature failure, especially in environments where pitting corrosion is prevalent, such as chloride-rich solutions [ 8 , 9 , 36 , 37 ].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Sensitization on the Susceptibility of AISI 316L Biomaterial to Pitting Corrosion

Zatkalíková,

Uhríčik,

Markovičová

et al. 2023

Materials

View full text Add to dashboard Cite

Due to the combination of high corrosion resistance and suitable mechanical properties, AISI 316L stainless steel is extensively used as the biomaterial for surgical implants. However, heat exposure in inappropriate temperatures can cause its sensitization accompanied by chromium depletion along the grain boundaries. This study deals with an assessment of the susceptibility of sensitized AISI 316L biomaterial to pitting under conditions simulating the internal environment of the human body (Hank’s balanced salt solution, 37 ± 0.5 °C). The resistance to pitting corrosion is tested by the potentiodynamic polarization and by the 50-day exposure immersion test. Corrosion damage after the exposure immersion test is evaluated in the specimens’ cross-sections by optical microscope and SEM. Despite passive behavior in potentiodynamic polarization and shallow, slight corrosion damage observed after exposure, the sensitized AISI 316L biomaterial could represent a risk, especially in long-term implantation even after the chemical removal of high-temperature oxides.

show abstract

The effects of passivation parameters on pitting potential of biomedical stainless steel

Cited by 5 publications

References 19 publications

Corrosion Behavior of Sensitized AISI 304 Stainless Steel in Acid Chloride Solution

Corrosion Behavior of Sensitized AISI 304 Stainless Steel in Acid Chloride Solution

Neural network based corrosion modeling of Stainless Steel 316L elbow using electric field mapping data

The Effect of Sensitization on the Susceptibility of AISI 316L Biomaterial to Pitting Corrosion

Contact Info

Product

Resources

About