Effect of chromium content on the corrosion resistance of ferritic stainless steels in sulfuric acid solution

Yu, Yang; Shironita, Sayoko; Souma, Kenichi; Umeda, Minoru

doi:10.1016/j.heliyon.2018.e00958

Cited by 65 publications

(27 citation statements)

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“…The SSCs friction such as interproximal and intraoral wear during mastication may lead to a greater surface corrosion and increase the release of sizeable amounts of salivary Ni and Cr elements (63) . This interpretation is consistent with the interpretation of Bhaskar and Subba Reddy (64) , and Yu et al (65) who explained that stainless steel is a corrosion resistance family of iron alloys that have a minimum of 10.5% chromium. Chromium in SSCs plays a dominant role in reacting with oxygen and moisture intraoral and air to form anticorrosive passive chromium III oxide film, approximately 1-5 nanometres thick, on the steel surface.…”

Section: Discussionsupporting

confidence: 91%

Effect of Multiple Stainless Steel Crowns on Salivary pH, Nickel, and Chromium Levels

Beltagy

2020

Egyptian Dental Journal

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Background: The use of stainless steel crowns (SSCs) in pediatric dentistry is widely used. Recently, there has been an increasing ecological and global public health concern associated with environmental contamination by metallic alloys. Aim of the study: To determine the in-vitro and in-vivo effect of multiple stainless steel crowns on the salivary pH, nickel and chromium levels at different periods. Materials and methods:This study consisted of: I-In-vitro study: A total of 200 standard sizes of SSCs were divided into 4 groups (10 samples/each). Each sample/group contained 2, 4, 6, and 8 SSCs, respectively. All SSCs were trimmed 1mm circumferentially, smoothed, re-contoured, fitted, and cemented on standard crowns of plastic teeth models. Each group was placed in a closed container containing artificial saliva with a standard pH. II-In-vivo study: A total of 40 patients indicated for SSC restorations were selected, aged 5-9 years. Similar to in-vitro, they were allocated into 4 groups according to the numbers of SSCs restorations used. 5ml of unstimulated saliva was taken for pH, nickel, and chromium analysis at 5-intervals: baseline, and 1day, 1week, 2weeks, 1month, and 2-months post-cementation. Data analysis: The mean and standard deviations, one way ANOVA, and the Person correlation coefficient were used. The level of significance was adopted at p≤0.05. Results: In both studies:The more the increase in the number of SSCs, the more the increase in acidity and release of ions. As regards pH value; within the groups at 5 intervals, there was only a significant difference in groups containing 8 SSCs and 6 SSCs, and between the intervals and the baseline (p≤0.05). The group that has 8 SSCs recorded the lowest pH value. Among groups: in-vitro: all groups showed a significant difference during 3-time intervals (p≤0.05) except at 2-months; the difference was not significant (p>0.05), while in-vivo, the difference was not significant (p>0.05). As regards the released ions: Within groups, both studies showed a significant difference among all intervals, and between the intervals and the baseline (p≤0.05). Among groups: In-vitro, all groups showed significant differences during the intervals (p≤0.05), while the only period showing no significant difference was at 2 months in the chromium group (p>0.05). The group that has 8 SSCs recorded the highest level and the difference was significant (p≤0.05). The peak level of the released ions and reduced pH value was at 1day and 1week for in-vitro and in-vivo study, respectively. Conclusion:The released nickel and chromium ions were directly proportional to the number of stainless steel crowns whereas the pH value was inversely proportional. The maximum level recorded was 1day and 1-week post-cementation for in-vitro and in-vivo study, respectively. The peak released of ions was much lower than the toxic level or the level of dietary intake.

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Section: Discussionsupporting

confidence: 91%

Effect of Multiple Stainless Steel Crowns on Salivary pH, Nickel, and Chromium Levels

Beltagy

2020

Egyptian Dental Journal

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“…This means also that MS is more corroded in the tested solutions than LRBS specimens. It is widely recognized that the presence of other elements such as Cr and Co in LRBS specimens reinforced the corrosion resistance of LRBS in comparison with MS [3,4].…”

Section: Potentiodynamic Polarization Curves (Ppc's)mentioning

confidence: 99%

Comparative study on the corrosion behaviour of Lord Razor Blade Steel (LRBS) in aqueous environments

Boraei

Ibrahim

2020

Journal of Taibah University for Science

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The corrosion resistance of Lord Razor Blade Steel (LRBS) specimens made of low carbon steel has been compared in aqueous borate (pH 9.0), 1.0 M NaOH and 0.5 M NaCl solutions at 25°C. The investigation was accomplished utilizing potentiodynamic polarization curves (PPC's), cyclic potentiodynamic polarization (CPP), electrochemical impedance spectroscopy (EIS), open circuit potential (OCP) and chronoamperometric (j-t transients) techniques, complemented by SEM study. The study was also carried out on mild steel (MS) for comparison. It was found that the corrosion resistance of LRBS specimens in the borate solution is higher than that in NaCl and NaOH solutions. Moreover, the LRBS specimens possess a higher corrosion resistance than the MS in the same tested solutions.

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“…Ferritic stainless steels (FSs) are usually the heat‐resistant type of steel and frequently have been used for exhaust systems, furnace components, heat exchanger tubing, and similar high‐temperature applications. [ 8 ] Application in some special fields is also their notable feature. Ferritic steels serve as the high‐performance materials for the innovative advanced technologies in the energy sector.…”

Section: Introductionmentioning

confidence: 99%

“…As 1.4713 steel has a low concentration of chromium, which is the most important for the corrosion resistance in sulfuric acid solutions, [ 8 ] the heat treatment may not be sufficient for high protection of steel. Alumina coatings can provide better protection of steel in highly corrosive environments and act as a thermal barrier.…”

Section: Introductionmentioning

confidence: 99%

“…It was found that at high temperatures (800°C), the thick protective chromium scales on ferritic steels were observed, regardless of the exposure conditions, in the air atmosphere. [28] As 1.4713 steel has a low concentration of chromium, which is the most important for the corrosion resistance in sulfuric acid solutions, [8] the heat treatment may not be sufficient for high protection of steel. Alumina coatings can provide better protection of steel in highly corrosive environments and act as a thermal barrier.…”

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confidence: 99%

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Improvement of the corrosion characteristics of 1.4713 ferritic steel in 0.1 M sulfuric acid by heat treatment and Al₂O₃–TiO₂ coating

Stevanović¹,

Dimitrijević

Kamberović

et al. 2020

Materials & Corrosion

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This study addresses the influence of heat treatment and alumina coating on the corrosion of EN 1.4713 steel in 0.1 mol dm−3 sulfuric acid. The corrosion characteristics of three different samples are examined using the open circuit potential measurements, Tafel extrapolation, linear polarization resistance, weight‐loss method, and electrochemical impedance spectroscopy. The results showed that the application of the weight‐loss method yielded similar values to the electrochemical method in the first 24 h. A decrease in corrosion rate, in a similar manner, was observed for all three samples. The largest deacceleration was obtained for the alumina/titania‐coated sample. It was obtained that the heat treatment significantly increased the corrosion resistance, but only in the first 24 h. The alumina/titania coating decreases the corrosion rate by approximately 30 times at the beginning of the corrosion exposure and by nearly 300 times after 240 h. This coating could have a significant influence on construction design, which uses ferritic stainless steel as the material.

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Effect of chromium content on the corrosion resistance of ferritic stainless steels in sulfuric acid solution

Cited by 65 publications

References 35 publications

Effect of Multiple Stainless Steel Crowns on Salivary pH, Nickel, and Chromium Levels

Effect of Multiple Stainless Steel Crowns on Salivary pH, Nickel, and Chromium Levels

Comparative study on the corrosion behaviour of Lord Razor Blade Steel (LRBS) in aqueous environments

Improvement of the corrosion characteristics of 1.4713 ferritic steel in 0.1 M sulfuric acid by heat treatment and Al₂O₃–TiO₂ coating

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Effect of chromium content on the corrosion resistance of ferritic stainless steels in sulfuric acid solution

Cited by 65 publications

References 35 publications

Effect of Multiple Stainless Steel Crowns on Salivary pH, Nickel, and Chromium Levels

Effect of Multiple Stainless Steel Crowns on Salivary pH, Nickel, and Chromium Levels

Comparative study on the corrosion behaviour of Lord Razor Blade Steel (LRBS) in aqueous environments

Improvement of the corrosion characteristics of 1.4713 ferritic steel in 0.1 M sulfuric acid by heat treatment and Al2O3–TiO2 coating

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Improvement of the corrosion characteristics of 1.4713 ferritic steel in 0.1 M sulfuric acid by heat treatment and Al₂O₃–TiO₂ coating