Tungsten content and grain boundary misorientation angle effect on crack blunting in nanocrystalline Ni-W alloy

Zhao, Yang; Zhou, Jianqiu

doi:10.1007/s11051-017-4111-4

Cited by 7 publications

(2 citation statements)

References 56 publications

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“…Studies have demonstrated that the larger the particle size, the greater the surface recombination of photogenerated charge carriers. 15,32 Hence, the smaller particle size distribution of the Fe doped sample as compared to the undoped signifies less surface charge recombination. For better observation of morphology of the undoped BiVO 4 , TEM analysis was performed and the monographs are displayed in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…The smaller particle size distribution of the 1.0-Fe doped sample as compared to the undoped sample signifies less surface charge recombination. 15,32 Furthermore, the enhanced light absorption in the visible range beyond the optical response of undoped BiVO 4 and other Fe doping amounts may have contributed to the higher photocatalytic performance of 1.0-Fe-BiVO 4 nanosheets. A comprehensive summary from the literature of the photocatalytic conversion of methane to primary oxygenated products in BiVO 4 and other photocatalyst systems in comparison to this work is presented (Table S1, ESI †).…”

Section: Materials Advances Papermentioning

confidence: 99%

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New Fe-doped two-dimensional BiVO₄ nanosheets for direct methane conversion to methyl oxygenates

Afriyie,

Zhang

2024

Mater. Adv.

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Section: Resultsmentioning

confidence: 99%

Section: Materials Advances Papermentioning

confidence: 99%

New Fe-doped two-dimensional BiVO₄ nanosheets for direct methane conversion to methyl oxygenates

Afriyie,

Zhang

2024

Mater. Adv.

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Investigation on the mechanical properties of nanocrystalline Ni–W alloy with segregated GBAZ

Guo

Wang

et al. 2022

Appl. Phys. A

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Thermodynamic Stability of Nano-grained Alloys Against Grain Coarsening and Precipitation of Macroscopic Phases

Kaptay

2019

Metall Mater Trans A

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Thermodynamic conditions are derived here for binary alloys to have their grain boundary (GB) energies negative, ensuring the stability of some nano-grained (NG) alloys. All binary alloys are found to belong to one of the following three types. Type 1 is the unstable NG alloy both against grain coarsening and precipitation of a macro-phase. Type 2 is the partly stable NG alloy, stable against coarsening but not against precipitation. Type 3 is the fully stable NG alloy, both against coarsening and precipitation. Alloys type 1 have negative, or low-positive interaction energies between the components. Alloys type 2 have medium-positive interaction energies, while alloys type 3 have high-positive interaction energies. Equations are derived for critical interaction energies separating alloys type 1 from type 2 and those from type 3, being functions of the molar excess GB energy of the solute, temperature (T) and composition of the alloy. The criterion to form a stable NG alloy is formulated through a new dimensionless number (Ng), defined as the ratio of the interaction energy to the excess molar GB energy of the solute, both taken at zero Kelvin. Systems with Ng number below 0.6 belong to alloy type 1, systems with Ng number between 0.6 and 1 belong to alloy type 2, while systems with Ng number above 1 belong to alloy type 3, at least at T = 0 K. The larger is the Ng number, the higher is the maximum T of stability of the NG alloy. By gradually increasing temperature alloys type 3 convert first into type 2 and further into type 1. The Ng number is used here to evaluate 16 binary tungsten-based (W-B) alloys. At T = 0 K type 3 NG alloys are formed with B = Cu, Ag, Mn, Ce, Y, Sc, Cr; type 2 is formed in the W-Ti system, while type 1 alloys are formed with B = Al, Ni, Co, Fe, Zr, Nb, Mo and Ta. For the WAg system the region of stability of the NG alloys is shown on a calculated phase diagram, indicating also the stable grain size.

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Tungsten content and grain boundary misorientation angle effect on crack blunting in nanocrystalline Ni-W alloy

Cited by 7 publications

References 56 publications

New Fe-doped two-dimensional BiVO₄ nanosheets for direct methane conversion to methyl oxygenates

New Fe-doped two-dimensional BiVO₄ nanosheets for direct methane conversion to methyl oxygenates

Investigation on the mechanical properties of nanocrystalline Ni–W alloy with segregated GBAZ

Thermodynamic Stability of Nano-grained Alloys Against Grain Coarsening and Precipitation of Macroscopic Phases

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Tungsten content and grain boundary misorientation angle effect on crack blunting in nanocrystalline Ni-W alloy

Cited by 7 publications

References 56 publications

New Fe-doped two-dimensional BiVO4 nanosheets for direct methane conversion to methyl oxygenates

New Fe-doped two-dimensional BiVO4 nanosheets for direct methane conversion to methyl oxygenates

Investigation on the mechanical properties of nanocrystalline Ni–W alloy with segregated GBAZ

Thermodynamic Stability of Nano-grained Alloys Against Grain Coarsening and Precipitation of Macroscopic Phases

Contact Info

Product

Resources

About

New Fe-doped two-dimensional BiVO₄ nanosheets for direct methane conversion to methyl oxygenates

New Fe-doped two-dimensional BiVO₄ nanosheets for direct methane conversion to methyl oxygenates