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

doi:10.1016/j.cjche.2019.07.016

中国化学工程学报 ›› 2020, Vol. 28 ›› Issue (2): 340-347.DOI: 10.1016/j.cjche.2019.07.016

• Fluid Dynamics and Transport Phenomena • 上一篇下一篇

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 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

收稿日期:2019-01-22 修回日期:2019-06-25 出版日期:2020-02-28 发布日期:2020-05-21
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.

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 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:2020-02-28 Published:2020-05-21
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.

摘要/Abstract

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

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

M. Lavanya, V. Ramachandra Murthy, Padmalatha Rao. Erosion corrosion control of 6061 aluminum alloy in multi-phase jet impingement conditions with eco-friendly green inhibitor[J]. 中国化学工程学报, 2020, 28(2): 340-347.

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

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

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