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Influence Of Process Parameters On Anodic Plasma Electrolytic Polishing Of Q235 Low-Carbon Steel In (Nh4)2so4 Electrolyte

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  • CHUANLI GAO

    (Key Laboratory of Beam Technology of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, P. R. China†Institute of Radiation Technology, Beijing Academy of Science and Technology, Beijing 100875, P. R. China)

  • BIN WANG

    (��Department of Basic Sciences, Shanxi Agricultural University, Taigu, Jinzhong 030801, Shanxi, P. R. China)

  • YIZHAO LIAO

    (Key Laboratory of Beam Technology of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, P. R. China†Institute of Radiation Technology, Beijing Academy of Science and Technology, Beijing 100875, P. R. China)

  • QIAN ZHOU

    (Key Laboratory of Beam Technology of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, P. R. China†Institute of Radiation Technology, Beijing Academy of Science and Technology, Beijing 100875, P. R. China)

  • HUI LI

    (Key Laboratory of Beam Technology of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, P. R. China†Institute of Radiation Technology, Beijing Academy of Science and Technology, Beijing 100875, P. R. China)

  • XIAOYUE JIN

    (��Institute of Radiation Technology, Beijing Academy of Science and Technology, Beijing 100875, P. R. China)

  • CHI XU

    (Key Laboratory of Beam Technology of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, P. R. China†Institute of Radiation Technology, Beijing Academy of Science and Technology, Beijing 100875, P. R. China)

  • JIANCHENG DU

    (Key Laboratory of Beam Technology of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, P. R. China†Institute of Radiation Technology, Beijing Academy of Science and Technology, Beijing 100875, P. R. China)

  • WENBIN XUE

    (Key Laboratory of Beam Technology of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, P. R. China†Institute of Radiation Technology, Beijing Academy of Science and Technology, Beijing 100875, P. R. China)

Abstract

The plasma electrolytic polishing (PEP) process on Q235 low-carbon steel anode in (NH4)2SO4 electrolyte was investigated, and its surface properties under different PEP conditions were evaluated. The surface roughness of PEP samples under different electrolyte concentrations, initial roughness, voltages and treating times were measured. The surface morphologies and compositions of typical PEP samples were analyzed, and their wettability and surface free energy under different polishing times were evaluated. It was found that the near-surface temperature of the steel sample raised quickly with increasing the voltage, and then remained at about 100°C after 200V, which is beneficial to keep the microstructure and mechanical properties of Q235 low-carbon steel. Under the parameters of 3.0wt.% (NH4)2SO4 aqueous solution and applied voltage of 200V, the 8min PEP treatment could reduce the surface roughness of Q235 low-carbon steel from 2.100μm to 0.437μm. In addition, the polishing efficiency was the highest in the initial PEP stage, meanwhile, it also increased with the increase of initial roughness of the sample. After the PEP treatment, the contact angle of water on low-carbon steel decreased, and its surface free energy was slightly reduced. Moreover, the thickness of natural oxide film on Q235 low-carbon steel was reduced by about 30% after 8 min polishing treatment.

Suggested Citation

  • Chuanli Gao & Bin Wang & Yizhao Liao & Qian Zhou & Hui Li & Xiaoyue Jin & Chi Xu & Jiancheng Du & Wenbin Xue, 2025. "Influence Of Process Parameters On Anodic Plasma Electrolytic Polishing Of Q235 Low-Carbon Steel In (Nh4)2so4 Electrolyte," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 32(12), pages 1-13, December.
    • Handle: RePEc:wsi:srlxxx:v:32:y:2025:i:12:n:s0218625x2550009x
    DOI: 10.1142/S0218625X2550009X
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