Effect of Iron Ion on Corrosion Behavior of Inconel 625 in High-Temperature Water

Zhou, Huiling; Chen, Yipeng; Sui, Yi; Lv, Yunfei; Zhu, ZY; Yang, Lanlan; He, Zhen; Li, Chengtao; Fang, Kewei

doi:10.1155/2020/9130362

Cited by 7 publications

(1 citation statement)

References 43 publications

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“…[61] The characteristic peak on the overlay sample at 650 cm −1 indicates the nickel oxide (NiO). [62,63] The characteristics of the NiO phase are not noticed in the Raman spectra due to the weaker Raman feature when compared with the remaining oxides. [59] The existence of the NiCr 2 O 4 on the surface of the overlay sample is effective in resisting corrosion.…”

Section: Xrd Analysis and Raman Spectroscopymentioning

confidence: 99%

High temperature corrosion performance of Inconel 625 hard overlays deposited on stainless steel substrate

Nachimuthu,

Gosipathala,

Arasappan

et al. 2024

Materials & Corrosion

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In elevated conditions, austenitic stainless steels suffer intense damage by corrosion because of the severe oxide scale development. Giving stainless steel a corrosion‐resistant surface coating can prevent excessive damage. In this case, welding‐based overlaying is a potential method to restore the damaged parts as it has a higher productivity rate. This investigation articulates the corrosion resistance behavior of the multiple overlapped Inconel 625 (IN625) weld overlays on the AISI 316L substrate plate. The corrosion resistance at elevated temperatures was investigated with kinetic curves, further revealing the corrosion products from the sample surface. Characterization techniques like scanning electron microscopy with energy‐dispersive spectroscopy, X‐ray diffraction, and Raman spectroscopy were employed to analyze the corrosion products. Hot corrosion kinetics in the molten salt environment (Na2SO4 + V2O5) revealed that the IN625 overlay samples gained a weight of 40.15 mg/cm2, and the substrate had a weight gain of 65.42 mg/cm2. From the hot oxidation kinetics, it is evident that the mass gained by the substrate is more than twice that of the Inconel overlay sample. Furthermore, the formation of oxides and spinel phases rich in nickel (NiO, NiCr2O4) highly influenced the corrosion kinetics of the multiple overlapped IN625 overlay sample. The AISI 316L substrate sample revealed the existence of critical oxide phases such as Fe2O3 and Cr2O3, which were lesser and did not influence the corrosion resistance at 900°C. In the present investigation, the multiple overlapped IN625 weld overlay offered excellent corrosion resistance at high temperature compared to the AISI 316L.

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Section: Xrd Analysis and Raman Spectroscopymentioning

confidence: 99%

High temperature corrosion performance of Inconel 625 hard overlays deposited on stainless steel substrate

Nachimuthu,

Gosipathala,

Arasappan

et al. 2024

Materials & Corrosion

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Thermal properties of spark plasma sintered Inconel 625 modified by titanium zirconium mixed carbide

Rutkowski

Huebner

Graboś

et al. 2023

J Therm Anal Calorim

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Nickel-based superalloys are an important group of advanced engineering materials used for high-temperature and/or corrosive environments. Lately, in order to improve their mechanical properties, carbide reinforcement is added to a metal matrix, creating composites of improved hardness, shear resistance, or tensile resistance. In order to preserve the wide applicability of those materials, thermal properties, and corrosion resistance must also be evaluated. Presented research evaluated the thermal properties of Inconel 625—(Ti,Zr)C0.85 composites obtained at 1000 °C by spark plasma sintering process. Sinters containing 5–20 mass% of carbide phases were initially characterized in terms of their density, phase composition, and microstructure. A thorough examination of their thermal properties included: dilatometry, laser flash analysis, and differential scanning calorimetry. Conducted experiments revealed that a growing amount of carbide reinforcement decreased the thermal diffusivity and conductivity of samples. Other materials had a nonlinear correlation with that parameter. Performed analysis allowed to make an initial evaluation of oxidation resistance at 800 °C. It was shown that above 5 mass% addition of (Ti,Zr)C0.85 there is a considerable mass gain change shown by samples during the first hour of oxidation before passive layers were created. Suitable chemical reactions were predicted in order to describe the oxidation process of obtained composites.

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An involvement of ionic liquids and other small molecules as promising corrosion inhibitors in recent advancement of technologies in chemical industries

Pal¹,

Chaudhary²,

Jain³

et al. 2023

Advanced Applications of Ionic Liquids

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Effect of Iron Ion on Corrosion Behavior of Inconel 625 in High-Temperature Water

Cited by 7 publications

References 43 publications

High temperature corrosion performance of Inconel 625 hard overlays deposited on stainless steel substrate

High temperature corrosion performance of Inconel 625 hard overlays deposited on stainless steel substrate

Thermal properties of spark plasma sintered Inconel 625 modified by titanium zirconium mixed carbide

An involvement of ionic liquids and other small molecules as promising corrosion inhibitors in recent advancement of technologies in chemical industries

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