SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2020, Vol. 28 ›› Issue (2): 340-347.DOI: 10.1016/j.cjche.2019.07.016

• Fluid Dynamics and Transport Phenomena • Previous Articles     Next Articles

Erosion corrosion control of 6061 aluminum alloy in multi-phase jet impingement conditions with eco-friendly green inhibitor

M. Lavanya1, V. Ramachandra Murthy1, Padmalatha Rao2   

  1. 1 Department of Biotechnology, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, India;
    2 Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, India
  • Received:2019-01-22 Revised:2019-06-25 Online:2020-05-21 Published:2020-02-28
  • Contact: Padmalatha Rao
  • Supported by:
    The authors are thankful to Department of Chemistry and Department of Biotechnology, Manipal Institute of Technology, MAHE, Manipal for providing facilities to carry out this work.

Erosion corrosion control of 6061 aluminum alloy in multi-phase jet impingement conditions with eco-friendly green inhibitor

M. Lavanya1, V. Ramachandra Murthy1, Padmalatha Rao2   

  1. 1 Department of Biotechnology, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, India;
    2 Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, India
  • 通讯作者: Padmalatha Rao
  • 基金资助:
    The authors are thankful to Department of Chemistry and Department of Biotechnology, Manipal Institute of Technology, MAHE, Manipal for providing facilities to carry out this work.

Abstract: Erosion corrosion performance of 6061 aluminum alloy in simulated sea water slurry was investigated under multi-phase jet impingement conditions. The main objective of the work is to study erosion-corrosion of a material with engineering application and mitigate it using eco- friendly green inhibitor. Experiments were performed with the sand concentration of 0.3% and 0.3 μm size. The effect of temperature and flow rate on the performance of inhibitor was explored. Electrochemical methods were adopted for erosion-corrosion measurements. Experiments revealed that starch could mitigate erosion-corrosion with a maximum reduction efficiency of 58% at temperature of 303 K and flow rate of 4 L·min-1. Inhibition efficiency decreased with increase in flowrate and temperature. EIS spectrum demonstrated that the corrosion process in the presence on inhibitor was both charge transfer and mass transfer controlled. A key role of hydrodynamics in the performance of corrosion inhibitor was confirmed by the present study.

Key words: Erosion-corrosion, Green-inhibitor, Electrochemical studies, Aluminum alloy, Simulated sea water

摘要: Erosion corrosion performance of 6061 aluminum alloy in simulated sea water slurry was investigated under multi-phase jet impingement conditions. The main objective of the work is to study erosion-corrosion of a material with engineering application and mitigate it using eco- friendly green inhibitor. Experiments were performed with the sand concentration of 0.3% and 0.3 μm size. The effect of temperature and flow rate on the performance of inhibitor was explored. Electrochemical methods were adopted for erosion-corrosion measurements. Experiments revealed that starch could mitigate erosion-corrosion with a maximum reduction efficiency of 58% at temperature of 303 K and flow rate of 4 L·min-1. Inhibition efficiency decreased with increase in flowrate and temperature. EIS spectrum demonstrated that the corrosion process in the presence on inhibitor was both charge transfer and mass transfer controlled. A key role of hydrodynamics in the performance of corrosion inhibitor was confirmed by the present study.

关键词: Erosion-corrosion, Green-inhibitor, Electrochemical studies, Aluminum alloy, Simulated sea water