Influence of cold work on electrochemical behavior of 316L ASS in PEMFC environment

Vipin Tandon; Awanikumar P. Patil; Ramesh C. Rathod; Sourabh Shukla

doi:10.1088/2053-1591/aaaf27

Influence of cold work on electrochemical behavior of 316L ASS in PEMFC environment

Vipin Tandon, Awanikumar P. Patil, Ramesh C. Rathod, Sourabh Shukla

Manipal School of Architecture and Planning, Manipal

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

The influence of cold work (CW) on electrochemical behavior of 316L ASS in PEMFC (0.5M H₂SO₄ + 2 ppm HF at 70 °C) environment was investigated by microstructural observations, x-ray diffraction (XRD), polarization, electrochemical impedance spectroscopy (EIS) and Mott-Schottky (M-S) techniques. The XRD is used to analyze the increase in dislocation density and formation of α′-martensite with increasing CW degree. The EIS is used to find out the effect of substrate dislocation density on the film resistance. The EIS result show that with increasing CW, the diameter of depressed semi-circular arc and consequently film resistance decreased. This indicates the formation of highly disordered and porous film on CW. From PDP results, it is found that icrit, i_p and i_corr increased on increasing CW degree. Moreover, the direct relationship was drawn from the dislocation density of the substrate to the defect density of the passive film from M-S technique.

Original language	English
Article number	026528
Journal	Materials Research Express
Volume	5
Issue number	2
DOIs	https://doi.org/10.1088/2053-1591/aaaf27
Publication status	Published - 02-2018

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Biomaterials
Surfaces, Coatings and Films
Polymers and Plastics
Metals and Alloys

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10.1088/2053-1591/aaaf27

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title = "Influence of cold work on electrochemical behavior of 316L ASS in PEMFC environment",

abstract = "The influence of cold work (CW) on electrochemical behavior of 316L ASS in PEMFC (0.5M H2SO4 + 2 ppm HF at 70 °C) environment was investigated by microstructural observations, x-ray diffraction (XRD), polarization, electrochemical impedance spectroscopy (EIS) and Mott-Schottky (M-S) techniques. The XRD is used to analyze the increase in dislocation density and formation of α′-martensite with increasing CW degree. The EIS is used to find out the effect of substrate dislocation density on the film resistance. The EIS result show that with increasing CW, the diameter of depressed semi-circular arc and consequently film resistance decreased. This indicates the formation of highly disordered and porous film on CW. From PDP results, it is found that icrit, ip and icorr increased on increasing CW degree. Moreover, the direct relationship was drawn from the dislocation density of the substrate to the defect density of the passive film from M-S technique.",

author = "Vipin Tandon and Patil, {Awanikumar P.} and Rathod, {Ramesh C.} and Sourabh Shukla",

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AU - Tandon, Vipin

AU - Patil, Awanikumar P.

AU - Rathod, Ramesh C.

AU - Shukla, Sourabh

PY - 2018/2

Y1 - 2018/2

N2 - The influence of cold work (CW) on electrochemical behavior of 316L ASS in PEMFC (0.5M H2SO4 + 2 ppm HF at 70 °C) environment was investigated by microstructural observations, x-ray diffraction (XRD), polarization, electrochemical impedance spectroscopy (EIS) and Mott-Schottky (M-S) techniques. The XRD is used to analyze the increase in dislocation density and formation of α′-martensite with increasing CW degree. The EIS is used to find out the effect of substrate dislocation density on the film resistance. The EIS result show that with increasing CW, the diameter of depressed semi-circular arc and consequently film resistance decreased. This indicates the formation of highly disordered and porous film on CW. From PDP results, it is found that icrit, ip and icorr increased on increasing CW degree. Moreover, the direct relationship was drawn from the dislocation density of the substrate to the defect density of the passive film from M-S technique.

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Influence of cold work on electrochemical behavior of 316L ASS in PEMFC environment

Abstract

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