Effect of alloying elements on aqueous corrosion of nickel‐based alloys at high temperatures: A review

Karimihaghighi, Razieh; Naghizadeh, Masoumeh

doi:10.1002/maco.202213705

Cited by 13 publications

(1 citation statement)

References 39 publications

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“…However, the addition of homogeneous alkaline catalysts can significantly impact the corrosion modes and extent of construction alloys, as most Fe, Cr, and Ni oxides are thermodynamically unstable in aqueous environments with a pH higher than 11 [17]. Furthermore, biowastes contain substantial amounts of chloride and sulfide ions, which are released during the conversion process and can promote various forms of corrosion, including pitting and stress corrosion cracking, in Fe-based and Ni-based alloys [66,67]. To address these corrosion challenges, it is crucial to select appropriate construction alloys, optimize process parameters, and develop cost-effective corrosion-resistant coatings.…”

Section: Corrosion Concern and Candidate Materials Selection For Core...mentioning

confidence: 99%

Key Processing Factors in Hydrothermal Liquefaction and Their Impacts on Corrosion of Reactor Alloys

Liu

Zeng

2023

Sustainability

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Despite intensive efforts to develop hydrothermal liquefaction for the conversion of wet biomass and biowaste feedstocks into valuable bio-oils, severe corrosion of conversion reactor alloys and other core components, induced by the pressurized hot water medium, catalysts, and inorganic and organic corrodants generated during the conversion process, has significantly hindered the industrial deployment of this attractive technology. In this paper, a general review of major operating parameters, including biomass feedstock types, temperature, pressure, and catalysts, was conducted to advance the understanding of their roles in conversion efficiency and the yield and properties of produced oils. Additionally, the corrosion performance of a representative constructional alloy (Alloy 33) was investigated in both non-catalytic and catalytic HTL environments at temperatures of 310 °C and 365 °C, respectively. The alloy experienced general oxidation in the non-catalytic HTL environment but suffered accelerated corrosion (up to 4.2 µm/year) with the addition of 0.5 M K2CO3 catalyst. The corrosion rate of the alloy noticeably increased with temperature and the presence of inorganic corrodants (S2− and Cl−) released from biowastes. SEM/XRD characterization showed that a thin and compact Cr-rich oxide layer grew on the alloy in the non-catalytic HTL environment, while the surface scale became a double-layer structure, composed of outer porous Fe/Cr/Ni oxides and inner Cr-rich oxide, with the introduction of the K2CO3 catalyst. From the corrosion perspective, the alloy is a suitable candidate for construction in the next phase of pilot-scale validation assessment.

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Section: Corrosion Concern and Candidate Materials Selection For Core...mentioning

confidence: 99%

Key Processing Factors in Hydrothermal Liquefaction and Their Impacts on Corrosion of Reactor Alloys

Liu

Zeng

2023

Sustainability

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Hydrothermal liquefaction of microalga with and without seawater: Effects of reaction temperature on yield and hydrocarbon species distribution in biocrude

Eboibi,

Okan

et al. 2024

Env Prog and Sustain Energy

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A halophytic microalga Tetraselmis sp. biomass diluted with deionized water and seawater was converted to biocrude with the hydrothermal liquefaction (HTL) process in a batch reactor at 310, 330, 350, and 370°C, 15 min with %w/w solids. The biocrude yield, carbon, and energy recovery in biocrude and hydrocarbon species distribution from deionized water base HTL (DW HTL) and seawater base HTL (SW HTL) were evaluated. The results revealed that irrespective of reaction medium, the yield in biocrude increased with an increase in temperature, reaching a maximum of 50–56 wt% at 350°C, characterized by a higher heating value of up to 35.6 MJ/kg. The carbon and energy recovery at 350°C were 85% and 89% respectively, for SW HTL, while the DW HTL stream was 10% and 12% lower. Also, the GC MS analysis of biocrude obtained from both streams contains a complex mixture of compounds such as hydrocarbons, phenolics, and large amounts of nitrogenated and oxygenated compounds. The metallic constituents in biocrudes derived from both steams showed no substantial variations. The study showed a marginal increase in biocrude yield and its HHV with a reduction in oxygen and nitrogen contents from the SW HTL stream, suggesting the potential of seawater as a reaction medium.

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Effects of Solution Treatment on Microstructure and Properties of Inconel600 Alloy

Shi,

Zhang,

Tong

et al. 2024

J. of Materi Eng and Perform

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Effect of alloying elements on aqueous corrosion of nickel‐based alloys at high temperatures: A review

Cited by 13 publications

References 39 publications

Key Processing Factors in Hydrothermal Liquefaction and Their Impacts on Corrosion of Reactor Alloys

Key Processing Factors in Hydrothermal Liquefaction and Their Impacts on Corrosion of Reactor Alloys

Hydrothermal liquefaction of microalga with and without seawater: Effects of reaction temperature on yield and hydrocarbon species distribution in biocrude

Effects of Solution Treatment on Microstructure and Properties of Inconel600 Alloy

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