Abstract
Due to its low thermal expansion coefficient and superior water/oxygen isolation properties, smooth 304 stainless steel may become the main substrate material for flexible organic light-emitting diode (FOLED) screens. However, in order to achieve a nano-scale smooth surface, 304 stainless steel substrates must undergo chemical mechanical polishing (CMP). A new type of polishing slurry consisting of hydrogen peroxide and ferric chloride was used to polish 304 stainless steel in our work. The material removal rate exceeds 700 nm/min and the surface roughness is below 5 nm after polishing using the optimized ratio of hydrogen peroxide and ferric chloride. Furthermore, the influence of the Fenton-like reaction between hydrogen peroxide and ferric chloride on chemical mechanical polishing 304 stainless steel is revealed by analyzing the concentration of Fe2+ ion and Fe element in the waste polishing slurry. A Fenton-like reaction occurs, including 2Fe3+ + Fe → 3Fe2+ and 2Fe2+ + H2O2 + 2H+ → 2Fe3+ + 2H2O, which enhances the polishing effect by metal-catalyzed oxidation. Hydrogen peroxide not only acts as an initiator of the Fenton reaction, but also as an inhibitor of the Fenton-like reaction, as it can react with hydroxyl radicals to generate peroxyl radicals.







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The authors appreciate financial supports from Jiangsu Key Laboratory of Precision and Micro-Manufacturing Technology, and National Natural Science Foundation of China (Grant Nos. 52075318 and U20A20293).
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Jiapeng Chen*: Conceptualization, Methodology, Software, Validation, Formal analysis, Investigation, Writing—Original Draft, Writing—Review & Editing, Visualization.
Yanan Peng*: Conceptualization, Methodology, Resources, Writing—Review & Editing, Supervision, Funding acquisition, Validation.
Zhankui Wang: Conceptualization, Methodology, Writing—Review & Editing, Supervision.
Fenggang Lv: Writing—Review & Editing.
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Chen, J., Peng, Y., Wang, Z. et al. Influence of Fenton-like reactions between hydrogen peroxide and ferric chloride on chemical mechanical polishing 304 stainless steel. Int J Adv Manuf Technol 131, 2667–2675 (2024). https://doi.org/10.1007/s00170-023-12117-2
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DOI: https://doi.org/10.1007/s00170-023-12117-2