Atomic scale studies of silver segregation at {222} MgO/Cu heterophase interfaces

D. A. Shashkov; D. N. Seidman

doi:10.4028/www.scientific.net/msf.207-209.429

Atomic scale studies of silver segregation at {222} MgO/Cu heterophase interfaces

D. A. Shashkov^*, D. N. Seidman

^*Corresponding author for this work

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

Atom-probe field-ion microscopy (APFIM) was used to measure quantitatively the absolute values of the Gibbsian interfacial excess of Ag, Γ_Ag, at semi-coherent {222} MgO/Cu(Ag) heterophase interfaces. Atomically clean metal oxide/metal heterophase interfaces were obtained by internal oxidation of a pure ternary Cu(Mg, Ag) single-phase alloy to produce octahedral-shaped MgO precipitates, 10 to 30 nm in diameter and faceted on {222} panes, in a single-phase Cu(Ag) matrix. The measured value of Γ_Ag, at 500°C is (2±0.6)×10¹⁵ atoms cm^-2.

Original language	English (US)
Pages (from-to)	429-432
Number of pages	4
Journal	Materials Science Forum
Volume	207-209
Issue number	PART 1
DOIs	https://doi.org/10.4028/www.scientific.net/msf.207-209.429
State	Published - 1996

Keywords

Atom-Probe Field-Ion Microscopy
Ceramic/Metal Interface
Cu/MgO
Equilibrium Segregation
Gibbsian Interfacial Excess
Internal Oxidation
Precipitate

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "Atomic scale studies of silver segregation at {222} MgO/Cu heterophase interfaces",

abstract = "Atom-probe field-ion microscopy (APFIM) was used to measure quantitatively the absolute values of the Gibbsian interfacial excess of Ag, ΓAg, at semi-coherent {222} MgO/Cu(Ag) heterophase interfaces. Atomically clean metal oxide/metal heterophase interfaces were obtained by internal oxidation of a pure ternary Cu(Mg, Ag) single-phase alloy to produce octahedral-shaped MgO precipitates, 10 to 30 nm in diameter and faceted on {222} panes, in a single-phase Cu(Ag) matrix. The measured value of ΓAg, at 500°C is (2±0.6)×1015 atoms cm-2.",

keywords = "Atom-Probe Field-Ion Microscopy, Ceramic/Metal Interface, Cu/MgO, Equilibrium Segregation, Gibbsian Interfacial Excess, Internal Oxidation, Precipitate",

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year = "1996",

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T1 - Atomic scale studies of silver segregation at {222} MgO/Cu heterophase interfaces

AU - Shashkov, D. A.

AU - Seidman, D. N.

PY - 1996

Y1 - 1996

N2 - Atom-probe field-ion microscopy (APFIM) was used to measure quantitatively the absolute values of the Gibbsian interfacial excess of Ag, ΓAg, at semi-coherent {222} MgO/Cu(Ag) heterophase interfaces. Atomically clean metal oxide/metal heterophase interfaces were obtained by internal oxidation of a pure ternary Cu(Mg, Ag) single-phase alloy to produce octahedral-shaped MgO precipitates, 10 to 30 nm in diameter and faceted on {222} panes, in a single-phase Cu(Ag) matrix. The measured value of ΓAg, at 500°C is (2±0.6)×1015 atoms cm-2.

AB - Atom-probe field-ion microscopy (APFIM) was used to measure quantitatively the absolute values of the Gibbsian interfacial excess of Ag, ΓAg, at semi-coherent {222} MgO/Cu(Ag) heterophase interfaces. Atomically clean metal oxide/metal heterophase interfaces were obtained by internal oxidation of a pure ternary Cu(Mg, Ag) single-phase alloy to produce octahedral-shaped MgO precipitates, 10 to 30 nm in diameter and faceted on {222} panes, in a single-phase Cu(Ag) matrix. The measured value of ΓAg, at 500°C is (2±0.6)×1015 atoms cm-2.

KW - Atom-Probe Field-Ion Microscopy

KW - Ceramic/Metal Interface

KW - Cu/MgO

KW - Equilibrium Segregation

KW - Gibbsian Interfacial Excess

KW - Internal Oxidation

KW - Precipitate

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VL - 207-209

SP - 429

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JO - Materials Science Forum

JF - Materials Science Forum

IS - PART 1

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Atomic scale studies of silver segregation at {222} MgO/Cu heterophase interfaces

Abstract

Keywords

ASJC Scopus subject areas

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