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Electrochemical Investigation of Duplex Stainless Steel Cladded Carbon Steel Manufactured via Powder

The duplex stainless steels find extensive applications where there is a need for highly corrosion resistant materials i.e. oil and gas industry nuclear power generation seawater applications. This study aims to investigate the electrochemical and corrosion properties of duplex stainless steel cladded carbon steel manufactured using powder bed the selective laser melting (PB-SLM) technique in 3.56 wt.% NaCl solution. The PB-SLM technique involves spreading of a thin layer of duplex stainless steel powder on a mild steel substrate and localized melting with Yb - fiber laser. Crucial parameters of the PB-SLM process such as laser power laser-scanning speed and layer thickness were optimized and fine-tuned to achieve the best possible bonding between the clad material and the carbon steel substrate. Using the optimized process parameters carbon steel substrates were cladded with stainless steel of various thicknesses. Several mechanical and microscopic tests (viz. nano-indentation X-ray diffraction Scanning electron microscopy) were performed to characterize both the bulk properties of the stainless steel layer and the interface between the cladding and the substrate. Electrochemical and corrosion properties were tested via. open-circuit potential monitoring electrochemical impedance spectroscopy (EIS) and cyclic polarization (CP) in the said electrolyte. Scanning vibrating electrode technique was employed to study the galvanic corrosion properties of the duplex stainless steel and carbon steel at the clad-substrate interface.

Product Number: 51319-13538-SG
Author: Pratik Murkute
Publication Date: 2019
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$20.00
$20.00
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03398 SELECTIVE CORROSION IN DUPLEX STAINLESS STEEL

Product Number: 51300-03398-SG
ISBN: 03398 2003 CP
Author: Wen-Ta Tsai, Kuen-Ming Tsai, Changjan Lin
$20.00