γ-Brasses with <i>I</i> and <i>P</i> cells

Brandon, J. K.; Brizard, R. Y.; Pearson, W. B.; Tozer, David J.

doi:10.1107/s0567740877003987

Cited by 33 publications

(16 citation statements)

References 7 publications

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“…(1) 11.852 [29] 4.7857 [30] As can be seen from Table 4, the obtained results confirm presence of the phases determined by SEM-EDS analysis. It can also be said that the determined values of lattice parameters for (Bi), , (Ag), BiIn, , AgIn2 phases are in close agreement with literature data [23,[29][30][31][32][33].…”

Section: )supporting

confidence: 87%

The influence of chemical composition on microstructure, hardness and electrical conductivity of Ag-Bi-In alloys at 100 °C

Ćosović

Minić²,

Premović³

et al. 2017

Metall Mater Eng

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Considering possible applications and scarceness of literature data, Ag-Bi-In system was investigated in terms of microstructure, mechanical and electrical properties of ternary alloys from an isothermal section at 100 °C. Based on the experimentally obtained results hardness and electrical conductivity of all ternary alloys from the ternary Ag-Bi-In system at 100 °C were predicted. In addition, the selected isothermal section was further thermodynamically assessed and experimentally studied using scanning electron microscopy (SEM) with energy dispersive spectrometry (EDS), X-ray powder diffraction (XRD) analysis and light optical microscopy (LOM). Phase transition temperatures of alloys with overall compositions along vertical sections x(Ag)=0.5 as well as liquidus temperatures were experimentally determined by DTA. The experimentally obtained results were compared with literature data and with the results of thermodynamic calculation of phase equilibria based on CALPHAD method and corrected data for Ag-In binary system. Calculated liquidus projection, invariant equilibria and phase diagram of the Ag-Bi-In ternary system are presented as well.

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Section: )supporting

confidence: 87%

The influence of chemical composition on microstructure, hardness and electrical conductivity of Ag-Bi-In alloys at 100 °C

Ćosović

Minić²,

Premović³

et al. 2017

Metall Mater Eng

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“…In the TEM study the Ag-In-rich areas were found to consist of the Ag 9 In 4 phase. The SAD patterns from this phase correspond to a cubic structure with space group P43m and cell dimension consistent with a ¼ 0 : 9922 nm as found by Brandon et al (1977). The regions with the Ag 9 In 4 phase were found to consist of large grains containing subgrains.…”

Section: The Lu Ga Alloy Compositesupporting

confidence: 72%

Dental gallium alloy composites studied by SEM and TEM

Gunnæs

Olsen

Herø

1997

Journal of Microscopy

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Analytical scanning and transmission electron microscopy (SEM and TEM) studies of dental gallium alloys have been carried out. The Ga alloys were made by triturating a LU powder (Ag–Sn–Cu rich alloy powder) and a GF powder (Ag–Sn–Cu–Pd rich alloy powder) with a liquid Ga alloy containing Ga, In and Sn. The dental materials were found to be composites consisting of remaining, undissolved particles from the Ag‐based alloy powders in a matrix of reaction products with the Ga alloy. SEM studies have been carried out to give an overview of the composites. The distribution of the elements was found by the X‐ray mapping technique. The phases in the matrix and the remaining alloy particles have been identified by electron diffraction, high‐resolution electron microscopy and energy‐dispersive X‐ray spectroscopy. The following phases were identified in the LU alloy: orthorhombic Ag3Sn, cubic Ag9In4, tetragonal β‐Sn and hexagonal Ag2Ga. In addition to these well‐known phases Ga‐rich regions were observed consisting of an intergrowth of tetragonal CuGa2 and one of the cubic γ‐Cu9Ga4 phases. In addition to these phases cubic Ga7Pd3 was found in the GF alloy. The anomalous setting expansion of the GF alloy may be explained by the presence of Ga7Pd3.

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“…To calculate these vec values, only the valence s and p electrons are used. The observed γ‐brass phases in binary and ternary systems adopt one of four different Bravais lattices, namely, primitive cubic ( P ‐cell),5–7 body‐centered cubic ( I ‐cell),8–12 face‐centered cubic ( F ‐cell; a superstructure ofγ‐brass),13–16 and rhombohedral ( R ‐cell) 17–21. Furthermore, the e – /atom ratios for these different structure types are nearly the same, so there are no guidelines explaining the existence of a specific structure type as a function of vec , except for the R ‐cell.…”

Section: Introductionmentioning

confidence: 99%

Crystal Structures and Stabilities of γ‐ and γ′‐Brass Phases in Pd_2–xAu_xZn₁₁ (x = 0.2–0.8): Vacancies vs. Valence Electron Concentration

Thimmaiah

Crumpton

Miller

2011

Zeitschrift anorg allge chemie

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To probe the effect of valence electron concentration (vec or e -/atom) on γ-Pd 2+x Zn 11-x phases a series of compounds Pd 2-x Au x Zn 11 (x = 0.3-0.8; e -/atom = 1.70-1.75) was synthesized and structurally characterized. The gold-substituted γ-brass type phase was observed for x Յ 0.3, having a refined composition of Pd 1.93 Au 0.27(1) Zn 10.80(1) (space group I43m; a = 9.0953 (2) Å). Further addition of gold (0.4 Յ x Յ 0.8) leads to a 2 ϫ 2 ϫ 2 superstructure of the γ-brass type phase (denoted as the γЈ-phase), with noticeable phase

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γ-Brasses with I and P cells

Cited by 33 publications

References 7 publications

The influence of chemical composition on microstructure, hardness and electrical conductivity of Ag-Bi-In alloys at 100 °C

The influence of chemical composition on microstructure, hardness and electrical conductivity of Ag-Bi-In alloys at 100 °C

Dental gallium alloy composites studied by SEM and TEM

Crystal Structures and Stabilities of γ‐ and γ′‐Brass Phases in Pd_2–xAu_xZn₁₁ (x = 0.2–0.8): Vacancies vs. Valence Electron Concentration

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γ-Brasses with I and P cells

Cited by 33 publications

References 7 publications

The influence of chemical composition on microstructure, hardness and electrical conductivity of Ag-Bi-In alloys at 100 °C

The influence of chemical composition on microstructure, hardness and electrical conductivity of Ag-Bi-In alloys at 100 °C

Dental gallium alloy composites studied by SEM and TEM

Crystal Structures and Stabilities of γ‐ and γ′‐Brass Phases in Pd2–xAuxZn11 (x = 0.2–0.8): Vacancies vs. Valence Electron Concentration

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Crystal Structures and Stabilities of γ‐ and γ′‐Brass Phases in Pd_2–xAu_xZn₁₁ (x = 0.2–0.8): Vacancies vs. Valence Electron Concentration