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Laser & Optoelectronics Progress, Volume. 55, Issue 4, 043102(2018)

Effect of Pulsed Current on Mechanical and Anticorrosion Properties of Laser Cladded Coating

Yuchen Xi1, Jianbo Zhu1, Shuang Liu1, Yirong Tang1, Qinying Wang、*, and Shulin Bai1
Author Affiliations
  • 1 Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China
  • 1 School of Materials Science and Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (10)
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    (a) Laser cladding equipment; (b) schematic of coating fabrication; (c) schematic of pulsed current processing

    Fig. 1. (a) Laser cladding equipment; (b) schematic of coating fabrication; (c) schematic of pulsed current processing

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    XRD patterns of cladded coatings under different pulsed current processing time

    Fig. 2. XRD patterns of cladded coatings under different pulsed current processing time

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    Surface morphologies of cladded coatings under different pulsed current processing time. (a) 0 h; (b) 1 h; (c) 2 h

    Fig. 3. Surface morphologies of cladded coatings under different pulsed current processing time. (a) 0 h; (b) 1 h; (c) 2 h

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    Elementary compositions of cladded coating treated by pulsed current for 2 h. (a) Primary crystal structure; (b) eutectic crystal structure

    Fig. 4. Elementary compositions of cladded coating treated by pulsed current for 2 h. (a) Primary crystal structure; (b) eutectic crystal structure

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    Hardness distributions of cladded coatings under different pulsed current processing time

    Fig. 5. Hardness distributions of cladded coatings under different pulsed current processing time

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    Nyquist plots of cladded coatings under different pulsed current processing time. (a) 0 h; (b) 1 h; (c) 2 h

    Fig. 6. Nyquist plots of cladded coatings under different pulsed current processing time. (a) 0 h; (b) 1 h; (c) 2 h

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    (a) Rox curves of cladded coatings under different pulsed current processing time; (b) equivalent circuit

    Fig. 7. (a) Rox curves of cladded coatings under different pulsed current processing time; (b) equivalent circuit

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    Potentiodynamic polarization curves of cladded coatings under different pulsed current processing time

    Fig. 8. Potentiodynamic polarization curves of cladded coatings under different pulsed current processing time

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    • Table 1. Chemical compositions of Q235 steel and Ni-Cr-Mo alloy powder (mass fraction, %)

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      Table 1. Chemical compositions of Q235 steel and Ni-Cr-Mo alloy powder (mass fraction, %)

      MaterialCrMoFeWNiSiMnSPC
      Q235 steel--Bal.--0.370.080.040.040.16
      Ni-Cr-Mo alloy powders211355Bal.-----

    • Table 2. Corrosion results of cladded coatings under different pulsed current processing time

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      Table 2. Corrosion results of cladded coatings under different pulsed current processing time

      Time /h012
      Average molemass /(g·mol-1)About 60About 60About 60
      Icorr /(10-7 A·cm-2)5.913.245.04
      Corrosionrate /(mm·y-1)0.00430.00230.036
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    Yuchen Xi, Jianbo Zhu, Shuang Liu, Yirong Tang, Qinying Wang, Shulin Bai. Effect of Pulsed Current on Mechanical and Anticorrosion Properties of Laser Cladded Coating[J]. Laser & Optoelectronics Progress, 2018, 55(4): 043102

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    Paper Information

    Category: Thin films

    Received: Oct. 16, 2017

    Accepted: --

    Published Online: Sep. 11, 2018

    The Author Email:

    DOI:10.3788/LOP55.043102

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology