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Laser shock peening (LSP): Electrochemical and hydrodynamic investigation of corrosion protection pre-treatment for a copper surface in 3.5 % NaCl medium

Type
Articles dans des revues avec comité de lecture
Author
CHUKWUIKE, V.I.
1060096 Academy of Scientific & Innovative Research [AcSIR], CSIR - HRDC Campus, Ghaziabad, Uttar Pradesh 201002, India
ECHEM, O.G.
PRABHAKARAN, S.
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
489892 PSG College of Technology [Coimbatore]
ANANDKUMAR, S.
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
525437 Indian Institute of Technology [Jammu] [IIT Jammu]
BARIK, R.C.
1060096 Academy of Scientific & Innovative Research [AcSIR], CSIR - HRDC Campus, Ghaziabad, Uttar Pradesh 201002, India

URI
http://hdl.handle.net/10985/20096
DOI
10.1016/j.corsci.2020.109156
Date
2021
Journal
Corrosion Science

Abstract

Besides electrochemical corrosion protection, laser shock peening provides extended fatigue life and mechanical properties for metals, as reported in the literature. However, most of the studies were performed under static conditions. The effectiveness of this method under flow conditions and prolonged immersion duration is addressed in this study. Copper discs were peened with Nd: YAG laser in the presence of similar to 2 mm thickness of water and polyvinyl chloride to absorb the intensity and provide residual stress without surface damage. Electrochemical and hydrodynamic analyses indicate that the peened surface showed higher corrosion resistance in 3.5 % NaCl compared to the unpeened.

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