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Comparative Study Of Corrosion Behavior For Plasma Nitrided 1045 Carbon Steel With And Without Pretreatment Of Sand Blasting

Author

Listed:
  • SHIJING LU

    (Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou 213164, P. R. China)

  • XIAOBING ZHAO

    (Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou 213164, P. R. China†Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Changzhou University, Changzhou 213164, P. R. China)

  • BIN MIAO

    (Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou 213164, P. R. China†Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Changzhou University, Changzhou 213164, P. R. China)

  • LU SONG

    (Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou 213164, P. R. China†Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Changzhou University, Changzhou 213164, P. R. China)

  • KUNXIA WEI

    (Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou 213164, P. R. China†Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Changzhou University, Changzhou 213164, P. R. China)

  • JING HU

    (Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou 213164, P. R. China†Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Changzhou University, Changzhou 213164, P. R. China‡Materials Research and Education Center, Auburn University, AL 36849, USA)

Abstract

A pretreatment of sand blasting with the duration of 15min was carried out prior to plasma nitriding for 1045 carbon steel in this study. The corrosion behavior was evaluated by means of electrochemical polarization, electrochemical impedance spectroscopy (EIS) and soaking test, and compared with that without pretreatment of sand blasting. The results show that the pretreatment of sand blasting can significantly enhance the corrosion resistance, the corrosion potential shift to the noble direction, with higher corrosion potential of −1.067×103mV and lower corrosion current of 0.0853μA/cm2, and exhibit larger diameter, higher phase angle and wider frequency region, there exists no corrosion pit after soaking test, and the corrosion rate is decreased from 0.0387g/mm2 to 0.01341g/mm2, only 1/3 comparing with that of sample without pretreatment of sand blasting. The enhancement mechanism of corrosion behavior is mainly ascribed to the excellent protection from the thicker and denser compound layer with higher amount of ε-Fe2−3N.

Suggested Citation

  • Shijing Lu & Xiaobing Zhao & Bin Miao & Lu Song & Kunxia Wei & Jing Hu, 2018. "Comparative Study Of Corrosion Behavior For Plasma Nitrided 1045 Carbon Steel With And Without Pretreatment Of Sand Blasting," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 25(01), pages 1-6, January.
    • Handle: RePEc:wsi:srlxxx:v:25:y:2018:i:01:n:s0218625x18500361
    DOI: 10.1142/S0218625X18500361
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