Increase in Corrosion Resistance of Stainless Steels by Passivation Treatment using (H2O2+O3) Solution

俊夫, 柴田

doi:10.3323/jcorr.59.464

Cited by 5 publications

(1 citation statement)

References 2 publications

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“…Besides, other minority metals in stainless steel, such as nickel and manganese, exhibited the same trend (not shown). The beneficial effects of the controlled contact between stainless steel and hydrogen peroxide in order to form an effective passivation layer which improves the pitting resistance of the material have been clearly reported . However, other authors have demonstrated the potential of hydrogen peroxide and strong inorganic acids mixtures to pickle stainless steel which involves an important contribution of metallic impurities from the steel surface to the hydrogen peroxide.…”

Section: Resultsmentioning

confidence: 99%

Hydrogen peroxide obtained via direct synthesis as alternative raw material for ultrapurification process to produce electronic grade chemical

Abejón

Biasi

et al. 2015

J of Chemical Tech & Biotech

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BACKGROUND:The catalytic direct synthesis of hydrogen peroxide is a highly interesting alternative process to avoid the current anthraquinone route because implies significant sustainability improvements. Among all the peroxide applications, its use as electronic chemical requires very low metallic content. The employment of direct synthesis peroxide as raw material for ultrapurification process has not been investigated before, so its viability is still pending of evaluation. RESULTS:Although the improvements of the catalyst or reactor performances of the direct synthesis process were not defined as objectives of the work, a maximal peroxide concentration of 2.3% was obtained, which is a very good result considering the low pressure used. Some relationships between the measured metallic concentrations in the obtained chemical and the operation conditions have been very useful to identify the most important conditions (selection of appropriate quality for the chemicals and proper materials for the installation) to promote the production of hydrogen peroxide with low metallic content. The technical competitiveness of this alternative ultrapurification process was clearly demonstrated as the number of required membrane stages (from 1 to 6 depending on the product quality) is lower than the required one by the traditional case. Besides, the process can be considered economically viable if the direct synthesis peroxide can be produced with a total cost below 36.5 $/m 3 . CONCLUSION:Further investigation, specifically focused to holistic approaches, is still necessary in order to assess the total costs of hydrogen peroxide production by direct synthesis. This way, the current available information could be complemented and the competitiveness of this direct route to obtain hydrogen peroxide for electronic grade chemical production could be more clearly defined.

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Section: Resultsmentioning

confidence: 99%

Hydrogen peroxide obtained via direct synthesis as alternative raw material for ultrapurification process to produce electronic grade chemical

Abejón

Biasi

et al. 2015

J of Chemical Tech & Biotech

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Effect of ozone on corrosion behavior of mild steel in seawater

et al. 2012

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Passivation Treatment of Electro-polished Type 304 Stainless Steel with H<sub>2</sub>O<sub>2</sub> Solutions

Ishimi

Ida

Tsutaka

et al. 2014

Journal of The Surface Finishing Society of Japan

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To develop a safe and environmentally friendly passivation treatment, the pitting resistance of Type 304 stainless steels, which were finished with different polishing methods and then passivated in H 2 O 2 solutions under various conditions, were examined by measuring their pitting potentials in deaerated 3.5 %NaCl. Results show that pitting potentials were strongly dependent on the surface polishing conditions. A remarkable increase in pitting potential was attained on an electro-polished surface. The highest resistance to pitting was obtained on a surface treated in 3.5 %H 2 O 2 at 25 ℃ for 2 h. The steels treated under this condition showed extremely high pitting potential of 1075 mV （vs. Ag/AgCl （sat. KCl）） in 3.5 %NaCl, but they showed no change in pitting potential after immersion in aerated 3.5 %NaCl for 100 d. Change in anodic polarization curves of electro-polished and passivation-treated Type 304 stainless steel in deaerated 3.5 %NaCl with immersion time in aerated 3.5 %NaCl. The electro-polished steel was passivated in 3.5 %H O for 2h and then immersed in aerated 3.5 %NaCl for 1-100d before the measurement of anodic polarization curves in deaerated 3.5 %NaCl.Contents of

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Increase in Corrosion Resistance of Stainless Steels by Passivation Treatment using (H2O2+O3) Solution

Cited by 5 publications

References 2 publications

Hydrogen peroxide obtained via direct synthesis as alternative raw material for ultrapurification process to produce electronic grade chemical

Hydrogen peroxide obtained via direct synthesis as alternative raw material for ultrapurification process to produce electronic grade chemical

Effect of ozone on corrosion behavior of mild steel in seawater

Passivation Treatment of Electro-polished Type 304 Stainless Steel with H<sub>2</sub>O<sub>2</sub> Solutions

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