Electroplating Ni-doped Mn-Co films on AISI 430 stainless steel as interconnects in solid oxide fuel cells (SOFC)

Worapan Kanyarat; Piyapon Limprapard; Thamrongsin Siripongsakul; Somrerk Chandra-ambhorn; Patama Visuttipitukul; Kattareeya Taweesup

doi:10.3139/120.111093

Article

Electroplating Ni-doped Mn-Co films on AISI 430 stainless steel as interconnects in solid oxide fuel cells (SOFC)

Worapan Kanyarat , Piyapon Limprapard , Thamrongsin Siripongsakul , Somrerk Chandra-ambhorn , Patama Visuttipitukul and Kattareeya Taweesup

Published/Copyright: November 21, 2017

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From the journal Materials Testing Volume 59 Issue 11-12

Abstract

The addition of Ni to Mn-Co films was prepared by electroplating process. Film behavior under corrosive environment was investigated by oxidation techniques. The samples were kept under stagnant air at 800 °C in heat treatment furnace at operating temperature of SOFC for 100 hours. The surface morphology and films compositions were then examined. Mn-Co films with nickel amount of 18.8 wt.-% exhibited the best oxidation resistance. Ni-doped Mn-Co films show high antioxidation behavior because of high film density and crack-free film. The film is composed of many small particles with close packing, and the average particle size is about 1 μm. Film thickness is around 11 μm with surface roughness of 82.97 nm and it has good coherence with substrates. Optimization of nickel amount also plays an important role in antioxidation performance.

Kurzfassung

Die Zugabe von Ni zu Mn-Co-Filmen wurde mittels Elektroplattierens ausgeführt. Das Verhalten der Filme in korrosiven Umgebungen wurde mittels Oxidationstechniken untersucht. Die Proben wurden hierzu statisch bei 800 °C in einem Ofen für 100 Stunden wärmebehandelt, was der Betriebstemperatur einer Brennstoffzelle entspricht. Anschließend wurden die Oberflächenmorphologie und die Filmzusammensetzung untersucht. Die Mn-Co-Filme mit einem Nickelzusatz von 18,8 gew.-% zeigten die beste Oxidationsresistenz. Die Mn-Co-Filme mit Nickelzugabe wiesen ein gutes Antioxidationsverhalten aufgrund ihrer hohen Dichte und Rissfreiheit auf. Der Film ist aus vielen kleinen Partikeln in enger Packung aufgebaut, wobei die mittlere Partikelgröße etwa 1 μm entsprach. Die Filmdicke betrug 11 μm mit einer Oberflächenrauheit von 82.97 nm und sie hatte eine gute Kohärenz mit den Substraten. Die Optimierung des Nickelanteils hat eine wichtige Bedeutung hinsichtlich des Antioxidationsverhaltens.

*Correspondence Address, Dr. Kattareeya Taweesup, Department of Materials and Production Technology Engineering, Faculty of Engineering, King Mongkut's University of Technology North Bangkok, 1518 Pracharat 1 Rd., Wongsawang, Bangsue, Bangkok10800, Thailand, E-mail: kattareeya.t@eng.kmutnb.ac.th, Thamrongsin.s@eng.kmutnb.ac.th, Patama.V@Chula.ac.th, somrerk.c@eng.kmutnb.ac.th

Worapan Kanyarat, born in 1995, received a bachelor degree in Materials and Production Technology Engineering from King Mongkut's University of Technology North Bangkok, Thailand in 2016.

Piyapon Limprapard, born in 1995, received a bachelor degree in Materials and Production Technology Engineering from King Mongkut's University of Technology North Bangkok, Thailand in 2016.

Dr. Thamrongsin Siripongsakul, born in 1979, is a member of the High Temperature Corrosion Research Center, Department of Materials and Production Technology Engineering, King Mongkut's University of Technology North Bangkok, Thailand. He received a PhD in Applied Physics Engineering from Tohoku University Graduate School of Engineering, Sendai, Japan, in 2012. His areas of expertise are thin film technology, surface coating technology and high temperature corrosion.

Dr. Somrerk Chandra-ambhorn, born in 1977, received his bachelor and master degrees in Metallurgical Engineering from Chulalongkorn University, Bangkok, Thailand in 2000 and 2002, respectively. He earned a PhD, Docteur de l'INP Grenoble, France in 2010. At present, he is working on high temperature corrosion and is the Head of the High Temperature Corrosion Research Center, King Mongkut's University of Technology North Bangkok, Thailand. He has published papers about corrosion science and oxidation of metals.

Assist. Prof. Patama Visuttipitukul, born in 1977, received her PhD in Metallurgy from the University of Tokyo, Japan, in 2003. She is Assistant Professor in the Department of Metallurgical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand. She received her bachelor and master degrees in Metallurgical Engineering from Chulalongkorn University in 1998 and 2000, respectively, and an International Welding Engineer Certificate from The International Welding Institute in 2006. Her areas of expertise include surface treatment, heat treatment and thin film.

Dr. Eng. Kattareeya Taweesup, born in 1983, is currently a lecturer at King Mongkut's University of Technology North Bangkok, Thailand. She received her DEng and MSc degrees in Metallurgical Engineering from Chulalongkorn University, Bangkok, Thailand in 2014 and 2008, respectively. Her research scope is related to surface materials development by nitriding treatment, DC magnetron sputtering, electroplating, anodizing and corrosion characterizations.

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Published Online: 2017-11-21

Published in Print: 2017-11-15

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https://doi.org/10.3139/120.111093