Improved High Temperature Oxidation Behaviour of AISI 347 Grade Stainless Steel by Superficial Coating of CeO2.

Roy, Shibayan; Bottino, C.; Rakesh, V. R.; Kuiry, S. C.; Bose, Saswata

doi:10.2355/isijinternational.35.433

Cited by 7 publications

(3 citation statements)

References 2 publications

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“…This reactive element effect is well-known to substantially reduce hightemperature oxidation rates of chromia-forming FSS alloys. [44][45][46][47] For all the samples (uncoated and coated) in the dual-atmosphere exposure the air-side Cr/Mn oxide sublayer was found to be relatively depleted in Mn at the the LSM contact region. Sabioni, et al, investigated Mn diffusion in chromia polycrystals and films, and showed that the barrier effect provided by chromia against the diffusion of other elements, when present as a protective layer for high temperature…”

Section: Resultsmentioning

confidence: 96%

Interactions between Metallic Interconnects and Ceramic Electrodes in SOFC Operating Environments: Air Side

Amendola

Gannon

Sofie

et al. 2012

J. Electrochem. Soc.

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Ferritic stainless steel (FSS) bipolar plates are widely used to interconnect individual cells in planar Solid Oxide Fuel Cell (SOFC) stacks. In this study, thin films of ceramic and cermet electrode materials, La 0.8 Sr 0.2 MnO 3 (LSM) for the cathode and Ni-Y 2 O 3 /ZrO 2 (Ni-YSZ) for the anode, were screen printed on Sanvik's Sanergy HT, a specialty FSS alloy (with and without Co or Co/Ce surface coatings). Samples were then placed in a test rig which allows simultaneous exposures to humidified (3% H 2 O) single (air/air) and dual atmospheres (air/H 2 ) at 800 • C for 100 hours. This research is focused on the FSS surface oxide layers and the phenomena governing materials interactions during realistic SOFC exposures that drive degradation. The surface oxide layer composition and morphology are heavily influenced by the dual atmosphere exposures and contact with electrode materials. For example, air-side surface oxide layers are generally thicker and contain more Fe than those formed in single-atmospheres, and surface oxide layer thickness and composition is altered in the presence of contacting electrodes in comparison with gas-only exposures. These and other recent data suggest that corrosion studies performed without relevant SOFC stack environments (e.g., air-only and without contacting electrodes) may not reveal all of the pertinent high-temperature behaviors.

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Section: Resultsmentioning

confidence: 96%

Interactions between Metallic Interconnects and Ceramic Electrodes in SOFC Operating Environments: Air Side

Amendola

Gannon

Sofie

et al. 2012

J. Electrochem. Soc.

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“…The beneficial effects of superficially applied CeO 2 coating on pure-Fe, Fe-Cr and Fe-Cr-Ni ternary alloys during their high temperature oxidation in reducing the rate of oxidation as well as improving the scale adherence, have already been established through a number of studies [9][10][11] from this laboratory and also from others [12][13][14]. However, Fe-based alloys are known to undergo oxidation by outward migration of cations, while the oxide (rutile) scale grown on Ti up to a temperature of 1173 K involves predominant role played by inward diffusion of anions, whereas at higher temperatures outward cationic diffusion is the predominant migration process [15].…”

Section: Introductionmentioning

confidence: 98%

Influence of superficial CeO2 coating on high temperature oxidation behavior of Ti–6Al–4V

Sreedhar

Das

Mitra

et al. 2012

Journal of Alloys and Compounds

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“…In recent years, 347H austenitic stainless steel has been widely used as thermal strength steel in the hydrogenation reactor and its accessory parts in the petrochemical industry because of its good strength and oxidation resistance at high temperature [1,2]. 347H stainless steel whose carbon content is high contains Nb element.…”

Section: Introductionmentioning

confidence: 99%

Effect of Twice Stablizing Heat Treatment on the Properties of 347H Stainless Steel

Zhao

Zhang

Dai

et al. 2021

KEM

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In this study, the mechanical properties and intergranular corrosion properties of 347H austenitic stainless steel were studied by tensile test, impact test, double-ring electrochemical potentiodynamic reactivation test (DL-EPR) and microstructure observation in three states of solution, primary and twice stabilized state. Results showed that the key mechanical properties of 347H stainless steel under three different conditions had little change, and the mechanical properties at room temperature were not affected by the stabilizing heat treatment. After 12h of sensitization, the solution material showed obvious sensitization behavior, and the Ir/Ia index exceeded 0.3, indicating that the material entered the range of complete sensitization. Both primary and twice stabilizing heat treatment can significantly reduce the occurrence time of sensitization and prevent the sensitization process. However, the stabilizing heat treatment cannot completely prevent the material sensitization, and it must be combined with other methods .

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Improved High Temperature Oxidation Behaviour of AISI 347 Grade Stainless Steel by Superficial Coating of CeO2.

Cited by 7 publications

References 2 publications

Interactions between Metallic Interconnects and Ceramic Electrodes in SOFC Operating Environments: Air Side

Interactions between Metallic Interconnects and Ceramic Electrodes in SOFC Operating Environments: Air Side

Influence of superficial CeO2 coating on high temperature oxidation behavior of Ti–6Al–4V

Effect of Twice Stablizing Heat Treatment on the Properties of 347H Stainless Steel

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