Oxidation performance of a Fe–13Cr alloy with additions of rare earth elements

Martínez‐Villafañe, A.; Chacón-Nava, J.G.; Gaona-Tiburcio, C.; Almeraya-Calderón, Facundo; Domínguez-Patiño, G.

doi:10.1016/s0921-5093(03)00346-0

Cited by 23 publications

(22 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, it was found to lose its uniformity at 800°C depending on varying oxidation periods, thus resulting in formation of other mixed oxides at the interface . Impairment of structural and protective characteristics of oxides, forming at the interface, depending on the initial alloy composition, was also reported in other studies . At this point, the findings of the present research that involves the use of FeCr slag coating for industrial purposes, differ from those of the similar works in which commercially available FeCr coating powders were used for the same purpose, and FeCr slag coating proved to be a candidate for its particular use on caster rolls against high‐temperature oxidation in steel production.…”

Section: Resultscontrasting

confidence: 56%

“…27 Impairment of structural and protective characteristics of oxides, forming at the interface, depending on the initial alloy composition, was also reported in other studies. [28][29][30] At this point, the findings of the present research that involves the use of FeCr slag coating for industrial purposes, differ from those of the similar works in which commercially available FeCr coating powders were used for the same purpose, and FeCr slag coating proved to be a candidate for its particular use on caster rolls against high-temperature oxidation in steel production. At 900°C, which was applied to determine the upper critical resistance temperature of the coating system coated with FeCr slag, the coating system lost its resistance and failed with spallation.…”

Section: Oxidation Testsmentioning

confidence: 66%

See 1 more Smart Citation

Ferrochromium slag as a protective coating material against oxidation for caster rolls

Küçük

Öge

Gök

et al. 2018

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

In this study, ferrochromium (FeCr) slag, which is available as an industrial waste, is proposed as a protective surface coating material particularly for protection of continuous casting rolls against oxidation. FeCr slag was successfully deposited with atmospheric plasma spray (APS) method. Before the coating process, FeCr slag powder prepared in the particle size range of 5‐38 μm, was investigated using conventional characterization methods (XRD, SEM, TGA etc.). Thermal Barrier Coating (TBC) system was used as a basis for deposition processes. Accordingly, NiCoCrAlY (Amdry, −45 + 5 μm) was firstly deposited as metallic bond coat layer onto the surface of AISI 420 substrate, and then FeCr slag layer was deposited as the top coating layer. After the deposition of FeCr slag powder, the resulting coating layer was found to have low porosity with a homogeneous microstructure. The deposited FeCr slag coatings were subjected to isothermal oxidation tests at different temperatures and test durations for determination of their oxidation behavior and upper operating temperature limits. The results obtained from this study indicate that FeCr slag can be considered as an alternative protective coating material for caster rolls which are subjected to high temperatures up to 800°C.

show abstract

Section: Resultscontrasting

confidence: 56%

Section: Oxidation Testsmentioning

confidence: 66%

Ferrochromium slag as a protective coating material against oxidation for caster rolls

Küçük

Öge

Gök

et al. 2018

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

show abstract

“…Many efforts have been undertaken to alleviate or reduce the aforementioned disadvantages of using a Cr-contained alloy for IC materials. It has been found that adding thin layers of surface dopants or a coating of a reactive element such as yttrium [25,26], ruthenium [27], neodymium [28], praseodymium [28], lithium [29] or erbium [30] can change the growth mechanism of the oxide scale, effectively improving the adhesion of oxide and slowing its growth rate. Thinner and denser oxide scales have been observed for the reactive-element doped alloy.…”

Section: Introductionmentioning

confidence: 99%

Effect of Creep of Ferritic Interconnect on Long‐Term Performance of Solid Oxide Fuel Cell Stacks

Liu

Khaleel

2010

Fuel Cells

View full text Add to dashboard Cite

High‐temperature ferritic alloys are potential candidates as interconnect (IC) materials and spacers due to their low cost and coefficient of thermal expansion (CTE) compatibility with other components for most of the solid oxide fuel cells (SOFCs). However, creep deformation becomes relevant for a material when the operating temperature exceeds or even is less than half of its melting temperature (in degrees of Kelvin). The operating temperatures for most of the SOFCs under development are around 1,073 K. With around 1,800 K of the melting temperature for most stainless steel (SS), possible creep deformation of ferritic IC under the typical cell operating temperature should not be neglected. In this paper, the effects of IC creep behaviour on stack geometry change and the stress redistribution of different cell components are predicted and summarised. The goal of the study is to investigate the performance of the fuel cell stack by obtaining the changes in fuel‐ and air‐channel geometry due to creep of the ferritic SS IC, therefore indicating possible changes in SOFC performance under long‐term operations. The ferritic IC creep model was incorporated into software SOFC‐MP and Mentat‐FC, and finite element analyses (FEAs) were performed to quantify the deformed configuration of the SOFC stack under the long‐term steady‐state operating temperature. It was found that the creep behaviour of the ferritic SS IC contributes to narrowing of both the fuel‐ and the air‐flow channels. In addition, stress re‐distribution of the cell components suggests the need for a compliant sealing material that also relaxes at operating temperature.

show abstract

“…It has been found that adding thin layers of surface dopants or a coating of reactive elements such as yttrium, [6,7] ruthenium, [8] neodymium, [9] praseodymium, [9] lithium, [10] or erbium [11] can change the growth mechanism of the oxide scale, effectively improving the adhesion of oxide and slowing the rate of growth. Thinner and denser oxide scales have been observed for the reactive-element doped alloy.…”

Section: Introductionmentioning

confidence: 99%

“…These differences in morphology can be explained by the selective oxidation of the protective oxide-forming element. [9] The reasons of growth-rate reduction are proposed. It has also been suggested that the reduction might be because of the larger ionic radii of reactive elements, which may be segregated mainly at the grain boundary of the oxide scale.…”

Section: Introductionmentioning

confidence: 99%

Interfacial Shear Strength of Oxide Scale and SS 441 Substrate

Liu

Stephens

et al. 2010

Metall Mater Trans A

View full text Add to dashboard Cite

Recent developments on decreasing the operating temperature for solid oxide fuel cells (SOFCs) have enabled the use of high-temperature ferritic alloys as interconnect materials. Oxide scale will inevitably grow on the ferritic interconnects in a high-temperature oxidation environment of SOFCs. The growth of the oxide scale induces growth stresses in the scale layer and on the scale/ substrate interface. These growth stresses combined with the thermal stresses induced after stacking cooling by the thermal expansion coefficient mismatch between the oxide scale and the substrate may lead to scale delamination/buckling and eventual spallation, which may lead to serious cell performance degradation. Hence, the interfacial adhesion strength between the oxide scale and the substrate is crucial to the reliability and durability of the metallic interconnect in SOFC operating environments. In this article, we applied an integrated experimental/modeling methodology to quantify the interfacial adhesion strength between the oxide scale and the SS 441 metallic interconnect. The predicted interfacial strength is discussed in detail.

show abstract

Oxidation performance of a Fe–13Cr alloy with additions of rare earth elements

Cited by 23 publications

References 18 publications

Ferrochromium slag as a protective coating material against oxidation for caster rolls

Ferrochromium slag as a protective coating material against oxidation for caster rolls

Effect of Creep of Ferritic Interconnect on Long‐Term Performance of Solid Oxide Fuel Cell Stacks

Interfacial Shear Strength of Oxide Scale and SS 441 Substrate

Contact Info

Product

Resources

About