Electrochemical and surface studies on the passivity of nitrogen and molybdenum containing laser cladded alloys in 3.5 wt% NaCl solution

Huang, Chong-Cheng; Tsai, Wen‐Ta; Lee, J.T.

doi:10.1016/0010-938x(95)80007-7

Cited by 21 publications

(1 citation statement)

References 34 publications

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“…The laser treatment of metals and alloys has emerged as a novel surface modification technique, and laser application in the surface treatment has grown rapidly in recent years [1][2][3][4][5][6][7][8][9][10][11][12][13]. There are some fields where laser surface treatments have an important chance such as aerospace components, automobile applications and oil and gas industries.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Corrosion Resistance of Stainless Steel 304 Using Laser Surface Treatment

Ghayad

Shoeib

Mattar

et al. 2008

KEM

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Stainless steel AISI 304 was laser treated to enhance corrosion resistance and improve surface properties. . This alloy has many applications in auto industry (car body,) as well as oil and gas industry. Different conditions were applied in the laser surface treatment, namely: laser power density, scan speed, distance between paths, medium gas (air, argon and nitrogen). After laser treatment, the samples microstructures were investigated using optical microscope to examine micro structural changes due to laser irradiation. Specimen surfaces were investigated using XRD, SEM and EDAX before and after laser treatment to examine the surface composition changes brought by laser irradiation. Results showed that laser irradiation enhances the corrosion resistance of AISI 304 Stainless steel to a large extent. Corrosion rates as low as 0.011 mpy for laser treated samples were obtained in comparison to 0.952 mpy obtained for the untreated samples. Superior pitting corrosion resistance was obtained under specific treatment conditions. The enhancement of corrosion resistance depends on the laser irradiation conditions. The corrosion protection afforded by laser treatment is attributed mainly to the grain refinement of the top surface layer. This layer is found to consist of nano-scale grains.

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Section: Introductionmentioning

confidence: 99%

Enhancing Corrosion Resistance of Stainless Steel 304 Using Laser Surface Treatment

Ghayad

Shoeib

Mattar

et al. 2008

KEM

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Modifying a Stainless Steel for PEMFC Bipolar Plates via Electrochemical Nitridation

Wang

Turner

2013

Fuel Cells

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AISI446 stainless steel was electrochemically nitrided at room temperature. X‐ray photoelectron spectroscopy (XPS) analysis indicated that the nitrided steel was covered with surface ammonia and a layer of nitrides (mainly of mixed chromium nitrides). The nitride layer for 4 h nitrided steel at –0.9 V was about 2.5 nm thick. Dominating oxides appear on the steel's surface, so nitrogen incorporated oxides is a suitable term to describe the nitrided surface. The nitrided surface showed very low interfacial contact resistance (ICR) and excellent corrosion resistance in simulated polymer electrolyte membrane fuel cell (PEMFC) environments. The excellent stability of the nitride steel was confirmed by XPS depth profiling before and after testing in the PEMFC environments. Electrochemical nitridation provides an economic way for modifying the steel's surface to approach the U.S. Department of Energy 2015 goal for bipolar plates.

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Nickel-Free High-Nitrogen Stainless Steel

Katada

Taguchi

2015

Springer Series in Biomaterials Science and Engineering

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Electrochemical and surface studies on the passivity of nitrogen and molybdenum containing laser cladded alloys in 3.5 wt% NaCl solution

Cited by 21 publications

References 34 publications

Enhancing Corrosion Resistance of Stainless Steel 304 Using Laser Surface Treatment

Enhancing Corrosion Resistance of Stainless Steel 304 Using Laser Surface Treatment

Modifying a Stainless Steel for PEMFC Bipolar Plates via Electrochemical Nitridation

Nickel-Free High-Nitrogen Stainless Steel

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