Paper Title:
Investigation of Thin Coatings from Mn-Co-Fe System Deposited by PVD on Metallic Interconnects for SOFC Applications
  Abstract

Ternary Mn-Co-Fe metallic thin films were deposited by RF-magnetron co-sputtering on SiO2/Si wafers and on ZMG232L (Hitachi Metals®), a special ferritic stainless steel for Solid Oxide Fuel Cell applications. The deposition was followed by heat treatment in an oxidizing atmosphere in order to convert the metallic thin films to (Mn,Co,Fe)3O4 spinel oxides. Coated and uncoated steel samples were analyzed after 1 h heat treatment in order to confirm the presence of the spinel structure on top of the steel, as well as to investigate and characterize the growth of oxides, namely (Mn,Cr)3O4 and Cr2O3, at the internal steel/coating interface. From Grazing Incidence X-ray Diffraction (GI-XRD) investigations together with Energy Dispersive X-ray analysis – Scanning Electron Microscopy and Time of Flight – Secondary Ions Mass Spectroscopy sputtering depth profiling the presence of well adherent (Mn,Co,Fe)3O4 coatings with approximately 500 nm thickness and a grain size of about 150 nm was confirmed. After the preparation annealing, some samples were heat-treated in simulated cathodic atmospheres at 800 °C for 500 h in order to assess the stability of the coatings. GI-XRD spectra still showed the presence of the protective coatings, however sputtering depth profile analysis indicated the presence of Cr on the surface.

  Info
Periodical
Materials Science Forum (Volumes 595-598)
Edited by
Pierre Steinmetz, Ian G. Wright, Alain Galerie, Daniel Monceau and Stéphane Mathieu
Pages
797-804
DOI
10.4028/www.scientific.net/MSF.595-598.797
Citation
C. C. Mardare, M. Spiegel, A. Savan, A. Ludwig, "Investigation of Thin Coatings from Mn-Co-Fe System Deposited by PVD on Metallic Interconnects for SOFC Applications", Materials Science Forum, Vols. 595-598, pp. 797-804, 2008
Online since
September 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: M.A.E. Jepson, C.L. Verona, R.L. Higginson
Abstract:including, external oxide layers, internal grain boundary oxidation structures as well as many other forms of internal oxidation. During the...
792
Authors: Hee Soo Moon, Jae Hun Yang, Jae Ho Lee, Seung Ho Ahn, Jong Wan Park
Abstract:Lithium manganese oxide (LiMn2O4) had been a promising material for lithium-ion and thin film batteries. However, the LiMn2O4 had some...
1047
Authors: S. Fontana, M. Vuksa, Sébastien Chevalier, G. Caboche, P. Piccardo
Abstract:Due to the reduction of operating temperature from 1000°C to 800°C, chromia forming alloys are the best candidates for interconnects in...
753
Authors: Ying Bai, Chuan Wu, Feng Wu, Bo Rong Wu, Shi Chen
Abstract:Spinel LiMn2O4 was synthesized via a solid state reaction, and modified with Al2O3 thin layers by a chemical deposition method. The...
37
Authors: Michael Auinger, Sergiy Borodin, Srinivasan Swaminathan, Michael Rohwerder
Abstract:The grain boundary oxidation mechanism in hot rolled chromium – manganese steels during heat exposure at 700 °C was mathematically modeled....
76