Oxidation and electrical behavior of AISI 430 steel coated with Ni–P–TiO2–ZrO2 composite for SOFC interconnect application

Ebrahimifar, Hadi

doi:10.1007/s10854-020-04267-w

Cited by 5 publications

(3 citation statements)

References 77 publications

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“…It forms due the strong affinity of Mn to O 2 and its high diffusion coefficient (D), which is higher than those of Fe or Cr: D Mn > D Fe > D Cr. 38 The spinel reduces the partial oxygen pressure at the Cr 2 O 3 layer, 39 thereby helping to achieve the constant oxidation state observed for stainless steel at 900 and 950°C after more than 24 hours. This layer formation was also observed in previous oxidation experiments of AISI 441 steel performed in an atmosphere of pure oxygen at 900°C, 1000°C, and 1100°C 29 .…”

Section: Resultsmentioning

confidence: 99%

Passive filler loaded polysilazane‐derived glass/ceramic coating system applied to AISI 441 stainless steel, part 2: Oxidation behavior in synthetic air

Parchovianský

Petríková

Švančárek³

et al. 2020

Int J Applied Ceramic Tech

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This article features the oxidation behavior of ferritic stainless steel grade AISI 441 coated with protective polymer‐derived ceramics (PDC). Two PDC compositions are studied with respect to their oxidation resistance in a flow‐through atmosphere of synthetic air at temperatures of up to 1000°C. The coatings contain a combination of six passive fillers: Y‐containing ZrO2, glass microspheres, alumina‐yttria‐zirconia (AYZ) powder, and three commercial glasses. They are pyrolyzed in air for 1 hour at 800°C with heating and cooling rates of 3 K/min. Detailed microstructural examination of the oxide products formed at the surface of samples after exposure to air at 900°C, 950°C, and 1000°C for 1‐48 hours is analyzed. Both uncoated steel and steel coated with two of the protective systems described in part 1 of this article are investigated. Fe, Cr2O3, TiO2, and a spinel of the composition (Mn,Cr)3O4 are identified at the oxidized surface of the steel substrate using X‐ray diffraction. A significant weight gain of the unprotected steel is measured after all experiments, while oxidation tests of the coated steel show a negligible weight gain after 900°C and 950°C. During the early stages of coating oxidation, the monoclinic‐to‐tetragonal ratio in the zirconia filler is shifted toward the monoclinic modification. Longer exposures and higher temperatures lead to the formation of yttrium aluminum garnet (YAG) due to glass microsphere crystallization and solid state reactions in the AYZ powder. The crystallization of the three commercial glasses functioning as sealants leads to the formation of Ba(AlSiO4)2 also known as hexacelsian, which subsequently transforms to celsian. YZr8O14 is also formed. The protective effect of the PDC coatings applied to the stainless steel is demonstrated up to 950°C.

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Section: Resultsmentioning

confidence: 99%

Passive filler loaded polysilazane‐derived glass/ceramic coating system applied to AISI 441 stainless steel, part 2: Oxidation behavior in synthetic air

Parchovianský

Petríková

Švančárek³

et al. 2020

Int J Applied Ceramic Tech

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“…To further enhance the comprehensive properties of the composite coatings, the combination of different types of reinforcements is one of the solutions and has attracted increasing interest [28,29]. Various types of ceramic combinations embedded in nickel-based coatings, such as Ni-La 2 O 3 -CeO 2 [30] and Ni-Bi 2 O 3 -CeO 2 [31], have been studied, and the results indicate a better enhancement effect than those reinforced by single-type ceramic particles.…”

Section: Introductionmentioning

confidence: 99%

Improvement in comprehensive properties of nanocomposite coatings electro-codeposited with nitride and ceria

Zhong

Yang

et al. 2023

Materials Science and Technology

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Metal matrix composite coatings have attracted scientific and engineering interest because of their excellent mechanical properties. Nano-Si3N4 reinforced nickel coatings with different ceria contents were fabricated by electrodeposition. The microstructures, hardness, and tribological properties as well as corrosion behaviors of the composite coatings were studied in detailed. The results show that incorporation of ceria nanoparticles into the nickel matrix can decrease the grain size and facilitate the (111) texture of the coatings, leading to a smooth surface, compact microstructure, and dispersion-strengthening composites. The 6CeO2 coating with the highest hardness of 520 HV50g demonstrates the best wear resistance, while the 3CeO2 coating shows the best corrosion resistance with the smallest i corr value of 0.0972 μA/cm2. The study suggests a significant improvement in mechanical and anti-corrosion properties by incorporation with the ceria nanoparticles, which has important implications for the surface protection of engineering materials.

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“…Additionally, ferritic stainless steel usually contains 16~27% of Cr, and during prolonged service, the Cr element in the alloys is liable to migrate outward [ 4 , 5 ]. Chromium will oxide on the surface of the interconnector and a kind of volatile Cr compound will be generated in the humid environment, ultimately depositing on the cathode of the cell, causing “Cr poisoning” and the commercialization of SOFCs has been seriously influenced [ 6 , 7 ], as illustrated in Formulas (1)–(3). 2Cr 2 O 3 + 3O 2 = 4CrO 3 2Cr 2 O 3 + 3O 2 + 4H 2 O = 4CrO 2 (OH) 2 Cr 2 O 3 + O 2 + H 2 O = 2CrO 2 OH …”

Section: Introductionmentioning

confidence: 99%

Influences of Composite Electrodeposition Parameters on the Properties of Ni-Doped Co-Mn Composite Spinel Coatings

Tong,

Wang,

Leng

et al. 2024

Materials

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To enhance the comprehensive performance of solid oxide fuel cells (SOFCs) ferritic stainless steel (FSS) interconnectors, a novel approach involving composite electrodeposition and thermal conversion is proposed to prepare Ni-doped Co-Mn composite spinel protective coatings on FSS surfaces. The process involves the composite electrodeposition of a Ni-doped Co-Mn precursor coating, followed by thermal conversion to obtain the Co-Mn-Ni composite spinel coating. Crofer 22H was used as the substrate and orthogonal experiments were designed to investigate the influences of deposition solution pH, stirring rate, cathode current density, and the element content of Mn and Ni on the surface morphology and properties of the composite coatings, respectively. The characterization of the prepared coatings was conducted through macroscopic and microscopic morphology observations of the component surface, energy dispersive spectroscopy (EDS) analysis, and area specific resistance (ASR) testing, etc. Finally, the optimized composite electrodeposition parameters and the Mn-Ni content ratio in the solution were obtained. Experimental results indicated that the composite spinel coating prepared with the optimized process parameters exhibited excellent adhesion to the substrate, and the diffusion and migration of Cr element has been effectively inhibited. Compared with the substrate, the ASR of the coated components has also been decreased simultaneously, which provided an effective method for the surface modification of SOFC FSS interconnectors.

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Oxidation and electrical behavior of AISI 430 steel coated with Ni–P–TiO2–ZrO2 composite for SOFC interconnect application

Cited by 5 publications

References 77 publications

Passive filler loaded polysilazane‐derived glass/ceramic coating system applied to AISI 441 stainless steel, part 2: Oxidation behavior in synthetic air

Passive filler loaded polysilazane‐derived glass/ceramic coating system applied to AISI 441 stainless steel, part 2: Oxidation behavior in synthetic air

Improvement in comprehensive properties of nanocomposite coatings electro-codeposited with nitride and ceria

Influences of Composite Electrodeposition Parameters on the Properties of Ni-Doped Co-Mn Composite Spinel Coatings

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