Mechanism of adding rhenium to improve hot corrosion resistance of nickel-based single-crystal superalloys

Yang, F.C.; Lian, Lixian; Liu, Ying; Xiao-nan, Gong

doi:10.1007/s12598-020-01584-1

Cited by 12 publications

(4 citation statements)

References 28 publications

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“…Langmuir model: (7) Freundlich model: (8) where Q m represents the theoretical monolayer saturation adsorption capacity (mmol/g), and K L and K F represent the adsorption equilibrium constants. − at adsorption equilibrium (mmol/L), V is the volume of solution(L), and m is the mass of CS-Re-TIICM (g).…”

Section: Desorption Kinetics Experimentsmentioning

confidence: 99%

“…Rhenium (Re) is a rare metal , with excellent properties such as catalytic properties, high-temperature resistance, and corrosion resistance. − As an important strategic material, 70% of rhenium resources are used in super high heat resistant alloys in aerospace and 30% in petroleum cracking and hydrogenation catalysts . Rhenium has no independent mineral and is only (1 × 10 –9 ) in the earth’s crust.…”

Section: Introductionmentioning

confidence: 99%

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Chitosan-Comodified Surface-Grafted Thermosensitive Ion-Imprinted Composite Membrane for the Selective Recognition and Separation of ReO₄^–

Liu

Zhao

et al. 2023

ACS Appl. Polym. Mater.

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With decreasing global rhenium resources, it has become important to separate and purify rhenium in secondary resources, so a preparation strategy for a chitosan-comodified surface-grafted thermosensitive ion-imprinted composite membrane (CS-Re-TIICM) was developed in this work. The key of this design was that the two ends of a poly(N,N-diethylacrylamide) (PDEA) chain were grafted onto the imprinted polymer separating the layer matrix and the surface of the membrane, respectively, which aimed to improve the selectivity and desorption ratio of this material simultaneously. The structure and morphology of this material were characterized by FTIR and SEM, respectively. In addition, CS-Re-TIICM was applied to the secondary leaching solution of the high-temperature alloy to test the actual separation effect, and results showed that CS-Re-TIICM, possessing thermoresponsive recognition sites, and the structure of the imprinting cavity could be adjusted by temperature, which helped this material achieve good selective separation and purification performance for ReO4 –. The maximum adsorption capacity was 0.1071 mmol/g at 35 °C. CS-Re-TIICM not only showed an excellent selectivity (separation ReO4 –/MnO4 – of 3.90 in the presence of interfering ion MnO4 –) but also presented an excellent desorption performance (desorption ratio of 68.94%) and good reusability (adsorption capacity of 0.0425 mmol/g, desorption ratio of 59.13%, and separation degree of 1.24). When CS-Re-TIICM was applied to the secondary leaching solution of high-temperature alloys, the purity of Re was increased from 35.41% to 65.10% after one adsorption/desorption cycle, which depicted a prospective application in the industrialized separation of ReO4 – from a complex environment.

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Section: Desorption Kinetics Experimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Chitosan-Comodified Surface-Grafted Thermosensitive Ion-Imprinted Composite Membrane for the Selective Recognition and Separation of ReO₄^–

Liu

Zhao

et al. 2023

ACS Appl. Polym. Mater.

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“…The kinetics of anodic oxidation is determined by the arising potential difference and the ratio of the surface areas of these phases [5]. These facts indicate that the main oxidizing agents of the obtained materials under these conditions are hydrogen and oxygen cations [7,8].…”

Section: Corrosion Properties Of Coatingsmentioning

confidence: 99%

Influence of Chromium Concentration on Corrosion Resistance of Surface Layers of Stainless Steel

2021

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Phase transformations occurring during the non-vacuum electron-beam surfacing using a mixture of amorphous boron and chromium powder (from 5 to 30 wt%) as well as the effect of the resulting structure on the corrosion resistance of the surface layers of chromium-nickel austenitic steel have been investigated. It has been found that when processing a powder mixture with a minimum chromium content (5 and 10 wt%), layers with a dense arrangement of borides are formed. Further increase in chromium concentration (20 and 30 wt%) leads to the formation of solid solutions in the modified layer. It has been shown that an increase in the concentration of chromium in the surface layer leads to a twofold increase in the corrosion resistance of the 12Х18Н9T (AISI 302) steel surface.

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“…Which are widely used for modern aircraft engines owning to high temperature strength [1] , thermal stability [2][3][4], creep resistance [5,6] and oxidation resistance [7][8][9] at high temperatures. The excellent mechanical properties of nickel-based single-crystal superalloys at high temperatures are depend mainly on the effect of the γ´-Ni 3 Al strengthening phase in the alloy [10] . The large number of investigations on the γ´-Ni 3 Al strengthening phase were found that the strengthening effect cannot meet the requirements for the performance of nickel-based single crystal alloys under high temperature conditions any more [11][12][13] .…”

Section: Introductionmentioning

confidence: 99%

Structural stability, elasticity, thermodynamics, and electronic structures of L12-type Ni3X (X = Al, Ti, V, Nb) phases under external pressure condition

Chen

et al. 2022

J Mol Model

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In this paper, the impacts of external pressure on structural stability, elasticity, thermodynamics and relevant electronic structures of L1 2 -type Ni 3 X (X=Al, Ti, V, Nb) phases were investigated using the first-principles methods. The lattice parameters(a,b,c) and volume(V) of the Ni 3 X phases decrease with increasing pressure. however, the elastic constants( ij C ), bulk modulus(B), shear modulus(G), andYoung's modulus (E) increase. The calculated elastic constants indicate that the mechanical stability and ductility of Ni 3 X phases enhance with increasing pressure.The mechanical anisotropy of Ni 3 X phases are enhanced by the raised pressure.Electronic analysis shows that increase pressure makes Ni-d-orbital and X(X=Al, Ti, V, Nb) -d-orbital hybridization stronger and electron transfer increases. The sequence in regard to electron aggregation strength is Ni 3 Ti>Ni 3 Nb>Ni 3 V>Ni 3 Al. It is more directly reflected in the charge density difference maps. This is consistent with the analysis results of the enthalpy of formation(ΔH) and Debye temperature (Θ D ).

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Mechanism of adding rhenium to improve hot corrosion resistance of nickel-based single-crystal superalloys

Cited by 12 publications

References 28 publications

Chitosan-Comodified Surface-Grafted Thermosensitive Ion-Imprinted Composite Membrane for the Selective Recognition and Separation of ReO₄^–

Chitosan-Comodified Surface-Grafted Thermosensitive Ion-Imprinted Composite Membrane for the Selective Recognition and Separation of ReO₄^–

Influence of Chromium Concentration on Corrosion Resistance of Surface Layers of Stainless Steel

Structural stability, elasticity, thermodynamics, and electronic structures of L12-type Ni3X (X = Al, Ti, V, Nb) phases under external pressure condition

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Mechanism of adding rhenium to improve hot corrosion resistance of nickel-based single-crystal superalloys

Cited by 12 publications

References 28 publications

Chitosan-Comodified Surface-Grafted Thermosensitive Ion-Imprinted Composite Membrane for the Selective Recognition and Separation of ReO4–

Chitosan-Comodified Surface-Grafted Thermosensitive Ion-Imprinted Composite Membrane for the Selective Recognition and Separation of ReO4–

Influence of Chromium Concentration on Corrosion Resistance of Surface Layers of Stainless Steel

Structural stability, elasticity, thermodynamics, and electronic structures of L12-type Ni3X (X = Al, Ti, V, Nb) phases under external pressure condition

Contact Info

Product

Resources

About

Chitosan-Comodified Surface-Grafted Thermosensitive Ion-Imprinted Composite Membrane for the Selective Recognition and Separation of ReO₄^–

Chitosan-Comodified Surface-Grafted Thermosensitive Ion-Imprinted Composite Membrane for the Selective Recognition and Separation of ReO₄^–