High temperature oxidation and chromium volatilisation of AISI 430 stainless steel coated by Mn-Co and Mn-Co-Cu oxides for SOFC interconnect application

In order to investigate the high temperature oxidation behavior of AISI 430 stainless steel in atmosphere with humidity, the thermogravimetric analysis (TGA) has been conducted for different duration under air with variable absolute humidity (from 0% to 5%) at 800 °C and 900 °C. XRD has been used to determine residual stresses in each layer and in substrate. It has been found that the oxidation kinetics and residual stresses were affected by the water vapor. After oxidation, the oxide scale composed of an inner Chromia (Cr2O3) layer and an outer Mn1.5Cr1.5O4 spinel layer, while breakaway oxidation happened with the introduction of water vapor at 900 °C. The residual stresses in each of oxide layer are in compression and their levels varied with oxidation conditions.

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Residual Stress Study in Oxide Scale Obtained on High Temperature Oxidation of AISI 430 Stainless Steel

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.996.918 ◽

2014 ◽

Vol 996 ◽

pp. 918-923

Author(s):

Ning Li ◽

Ji Xiao ◽

Nathalie Prud’homme ◽

Vincent Ji

Keyword(s):

Residual Stress ◽

Stainless Steel ◽

High Temperature ◽

Oxide Scale ◽

High Temperature Oxidation ◽

Oxide Surface ◽

Gravimetric Analysis ◽

Temperature Oxidation ◽

430 Stainless Steel ◽

Aisi 430

The objective of this work was to investigate high temperature oxidation behavior of AISI 430 stainless steel, which was proposed to use as interconnector in the planar solid oxide fuel cells (SOFCs). The oxidation of the alloy has been conducted at 700°C, 800°C and 900°C for 12h-96h by thermal gravimetric analysis (TGA) system. The oxide surface morphology, cross-section microstructure and the chemical composition of the oxide scales were performed by FEG-SEM and EDX. The X-ray diffraction (XRD) was used to identify the oxide phases formed on the alloy and to determine the residual stress in the scale. It has been found that the oxide scale composed of a inner Cr2O3 layer and an outer Mn1.5Cr1.5O4 layer. The residual stresses in both oxide layers are compressive and the residual stress evolutions in the two layers are different according the oxidation temperature.

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High temperature oxidation of Co-W electroplated type 430 stainless steel for the interconnect of solid oxide fuel cells

Corrosion Science ◽

10.1016/j.corsci.2018.02.026 ◽

2018 ◽

Vol 134 ◽

pp. 162-168 ◽

Cited By ~ 8

Author(s):

Lu Gan ◽

Hideyuki Murakami ◽

Isao Saeki

Keyword(s):

Stainless Steel ◽

Fuel Cells ◽

High Temperature ◽

Solid Oxide Fuel Cells ◽

High Temperature Oxidation ◽

Solid Oxide ◽

Oxide Fuel ◽

Oxidation Of Co ◽

Temperature Oxidation ◽

430 Stainless Steel

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AK STEEL 441

Alloy Digest ◽

10.31399/asm.ad.ss0965 ◽

2006 ◽

Vol 55 (6) ◽

Keyword(s):

Stainless Steel ◽

Corrosion Resistance ◽

High Temperature ◽

Tensile Properties ◽

Oxidation Resistance ◽

Ferritic Stainless Steel ◽

High Temperature Oxidation ◽

High Temperature Strength ◽

Temperature Oxidation ◽

Temperature Performance

Abstract AK Steel 441 has good high-temperature strength, an equiaxed microstructure, and good high-temperature oxidation resistance. The alloy is a niobium-bearing ferritic stainless steel. This datasheet provides information on composition, hardness, and tensile properties as well as deformation. It also includes information on high temperature performance and corrosion resistance as well as forming and joining. Filing Code: SS-965. Producer or source: AK Steel.

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