The lattice parameter of α-bronzes as a function of solute content: application to archaeological materials

Sidot, Emmanuel; Kahn‐Harari, A.; Cesari, E.; Robbiola, Luc

doi:10.1016/j.msea.2004.10.001

Cited by 46 publications

(26 citation statements)

References 17 publications

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“…For the patina samples (FG-1 to FG-4), the standards used were pure metals for Cu, Zn, Sn and Pb, FeS 2 for Fe and S elements, and geological standards for the others investigated chemical elements. For the alloy sample (FG-5), only laboratory standards as defined in [16] were used. The results given in the article are the means and the standard deviations obtained from at least three measurements on each sample.…”

Section: Surface Analyses and Structural Characterizationmentioning

confidence: 99%

Composition and electrochemical properties of natural patinas of outdoor bronze monuments

Chiavari

Rahmouni

Takenouti

et al. 2007

Electrochimica Acta

Self Cite

165

107

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Section: Surface Analyses and Structural Characterizationmentioning

confidence: 99%

Composition and electrochemical properties of natural patinas of outdoor bronze monuments

Chiavari

Rahmouni

Takenouti

et al. 2007

Electrochimica Acta

Self Cite

165

107

View full text Add to dashboard Cite

“…Many such studies on a diverse range of alloys have established that lattice parameters vary smoothly, and most often almost linearly [1][2][3][4][5][6][7][8], with composition between the lattice parameters of the end-members of the alloy composition. This is well-known as Vegard's law [9,10], which has been used extensively to determine the stoichiometry [11][12][13] of different systems, though there are also examples of either positive or negative deviations [14][15][16][17][18][19][20][21][22] from Vegard's law.…”

Section: Introductionmentioning

confidence: 99%

Microscopic description of the evolution of the local structure and an evaluation of the chemical pressure concept in a solid solution

et al. 2014

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Extended x-ray absorption fine-structure studies have been performed at the Zn K and Cd K edges for a series of solid solutions of wurtzite Zn 1−x Cd x S samples with x = 0.0, 0.1, 0.25, 0.5, 0.75, and 1.0, where the lattice parameter as a function of x evolves according to the well-known Vegard's law. In conjunction with extensive, large-scale first-principles electronic structure calculations with full geometry optimizations, these results establish that the percentage variation in the nearest-neighbor bond distances are lower by nearly an order of magnitude compared to what would be expected on the basis of lattice parameter variation, seriously undermining the chemical pressure concept. With experimental results that allow us to probe up to the third coordination shell distances, we provide a direct description of how the local structure, apparently inconsistent with the global structure, evolves very rapidly with interatomic distances to become consistent with it. We show that the basic features of this structural evolution with the composition can be visualized with nearly invariant Zn-S 4 and Cd-S 4 tetrahedral units retaining their structural integrity, while the tilts between these tetrahedral building blocks change with composition to conform to the changing lattice parameters according to the Vegard's law within a relatively short length scale. These results underline the limits of applicability of the chemical pressure concept that has been a favored tool of experimentalists to control physical properties of a large variety of condensed matter systems.

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“…Which is explained based on the fact that the atomic radius of the alloying elements dissolved in the γ-U phase are greater than the atomic radius of the U, i.e., the atomic radius for Zr, Nb and U are 1.60 Å, 1.43 Å and 1.39 Å, respectively 12 . Moreover, this result shows that the increasing of the lattice parameter with Zr and Nb content up to 55 wt.%, obeys the Vegard's law, which states that the lattice parameters of a solid solution must change linearly with solute content [13][14][15] . For further additions, e.g.…”

Section: X-ray Diffractionmentioning

confidence: 55%

Synthesis and Structural Characterization of U-Zr-Nb Alloys

et al. 2017

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U-xZr-yNb alloys with values of x varying from 32% to 50% (wt.%Zr) and y varying from 6% to 10% (wt.%Nb) were produced by the arc melting technique. The effect of the addiction of zirconium and niobium on the phase stabilization of γ-U, lattice parameter, microstructure and elemental composition were examined by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectroscope (EDS) techniques. The alloys crystallized in a cubic symmetry composed by a γ-U(Zr,Nb) matrix and β-Zr small precipitates, when the content of zirconium and niobium is up to 55 wt.%. With further additions, e.g. 60 wt.%, was observed a highly enriched macrosegregation of β-Zr. It was also observed that the cell size of the γ-U(Zr,Nb) phase increase with the addition of Zr and Nb. The lattice parameter curve behavior as a function of zirconium and niobium deviates from a linear behavior at around x ≈ 50 and y ≈ 10 wt.%.

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The lattice parameter of α-bronzes as a function of solute content: application to archaeological materials

Cited by 46 publications

References 17 publications

Composition and electrochemical properties of natural patinas of outdoor bronze monuments

Composition and electrochemical properties of natural patinas of outdoor bronze monuments

Microscopic description of the evolution of the local structure and an evaluation of the chemical pressure concept in a solid solution

Synthesis and Structural Characterization of U-Zr-Nb Alloys

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