Atomic-scale structure and chemistry of ceramic/metal interfaces - II. Solute segregation at MgO/Cu (Ag) and CdO/Ag (Au) interfaces

D. A. Shashkov; D. A. Muller; D. N. Seidman

doi:10.1016/S1359-6454(99)00256-6

Atomic-scale structure and chemistry of ceramic/metal interfaces - II. Solute segregation at MgO/Cu (Ag) and CdO/Ag (Au) interfaces

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

^*Corresponding author for this work

Materials Science and Engineering

Research output: Contribution to journal › Conference article › peer-review

43 Scopus citations

Abstract

The first quantitative measurements of solute segregation at ceramic/metal (C/M) heterophase interfaces are presented for the MgO/Cu (Ag) and CdO/Ag (Au) systems. Interfaces are produced by internal oxidation of ternary alloys. Solute segregation at C/M interfaces is induced by intermediate-temperature annealing treatments. The Gibbsian interfacial excess of solute, Γ_solute, at these interfaces is determined in a direct, quantitative manner by atom-probe field-ion microscopy (APFIM). These measurements are complemented in the MgO/Cu (Ag) system by a composition analysis of this interface employing electron energy loss spectroscopy (EELS). Analyses of 15 {222} MgO/Cu (Ag) interfaces by APFIM show an average segregation level of (4.0±1.9)×10¹⁴ atoms/cm² or 0.22±0.10 effective monolayers at 500 °C. Analyses of three {222} CdO/Ag (Au) interfaces show an average segregation level of (3.0±1.0)×10¹⁴ atoms/cm² or 0.22±0.07 effective monolayers at 400 °C. Whereas {222} CdO/Ag (Au) interfaces in unannealed specimens show no evidence of gold segregation. These results are discussed in view of recent models of interfacial segregation.

Original language	English (US)
Pages (from-to)	3953-3963
Number of pages	11
Journal	Acta Materialia
Volume	47
Issue number	15
DOIs	https://doi.org/10.1016/S1359-6454(99)00256-6
State	Published - Nov 1999
Event	Proceedings of the 1998 ACTA Materiala Workshop on 'Materials Science and Mechanics of Interfaces' - La Jolla, CA, USA Duration: Oct 25 1998 → Oct 30 1998

Funding

John Silcox is thanked for kindly and graciously helping to make the EELS experiments possible at Cornell University and for useful discussions. We kindly thank Roy Benedek for many useful discussions and interactions concerning this study and for serving on the Ph.D. thesis committee of D.A.S. This research was supported by the U.S. Department of Energy at Northwestern University under grant DE-FG02-96ER45597 (D.A.S. and D.N.S.), and at Cornell University under grant DE-FG02-87ER45322 (D.A.M.).

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Polymers and Plastics
Metals and Alloys

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10.1016/S1359-6454(99)00256-6

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title = "Atomic-scale structure and chemistry of ceramic/metal interfaces - II. Solute segregation at MgO/Cu (Ag) and CdO/Ag (Au) interfaces",

abstract = "The first quantitative measurements of solute segregation at ceramic/metal (C/M) heterophase interfaces are presented for the MgO/Cu (Ag) and CdO/Ag (Au) systems. Interfaces are produced by internal oxidation of ternary alloys. Solute segregation at C/M interfaces is induced by intermediate-temperature annealing treatments. The Gibbsian interfacial excess of solute, Γsolute, at these interfaces is determined in a direct, quantitative manner by atom-probe field-ion microscopy (APFIM). These measurements are complemented in the MgO/Cu (Ag) system by a composition analysis of this interface employing electron energy loss spectroscopy (EELS). Analyses of 15 {222} MgO/Cu (Ag) interfaces by APFIM show an average segregation level of (4.0±1.9)×1014 atoms/cm2 or 0.22±0.10 effective monolayers at 500 °C. Analyses of three {222} CdO/Ag (Au) interfaces show an average segregation level of (3.0±1.0)×1014 atoms/cm2 or 0.22±0.07 effective monolayers at 400 °C. Whereas {222} CdO/Ag (Au) interfaces in unannealed specimens show no evidence of gold segregation. These results are discussed in view of recent models of interfacial segregation.",

author = "Shashkov, {D. A.} and Muller, {D. A.} and Seidman, {D. N.}",

note = "Funding Information: John Silcox is thanked for kindly and graciously helping to make the EELS experiments possible at Cornell University and for useful discussions. We kindly thank Roy Benedek for many useful discussions and interactions concerning this study and for serving on the Ph.D. thesis committee of D.A.S. This research was supported by the U.S. Department of Energy at Northwestern University under grant DE-FG02-96ER45597 (D.A.S. and D.N.S.), and at Cornell University under grant DE-FG02-87ER45322 (D.A.M.).; Proceedings of the 1998 ACTA Materiala Workshop on 'Materials Science and Mechanics of Interfaces' ; Conference date: 25-10-1998 Through 30-10-1998",

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T1 - Atomic-scale structure and chemistry of ceramic/metal interfaces - II. Solute segregation at MgO/Cu (Ag) and CdO/Ag (Au) interfaces

AU - Shashkov, D. A.

AU - Muller, D. A.

AU - Seidman, D. N.

N1 - Funding Information: John Silcox is thanked for kindly and graciously helping to make the EELS experiments possible at Cornell University and for useful discussions. We kindly thank Roy Benedek for many useful discussions and interactions concerning this study and for serving on the Ph.D. thesis committee of D.A.S. This research was supported by the U.S. Department of Energy at Northwestern University under grant DE-FG02-96ER45597 (D.A.S. and D.N.S.), and at Cornell University under grant DE-FG02-87ER45322 (D.A.M.).

PY - 1999/11

Y1 - 1999/11

N2 - The first quantitative measurements of solute segregation at ceramic/metal (C/M) heterophase interfaces are presented for the MgO/Cu (Ag) and CdO/Ag (Au) systems. Interfaces are produced by internal oxidation of ternary alloys. Solute segregation at C/M interfaces is induced by intermediate-temperature annealing treatments. The Gibbsian interfacial excess of solute, Γsolute, at these interfaces is determined in a direct, quantitative manner by atom-probe field-ion microscopy (APFIM). These measurements are complemented in the MgO/Cu (Ag) system by a composition analysis of this interface employing electron energy loss spectroscopy (EELS). Analyses of 15 {222} MgO/Cu (Ag) interfaces by APFIM show an average segregation level of (4.0±1.9)×1014 atoms/cm2 or 0.22±0.10 effective monolayers at 500 °C. Analyses of three {222} CdO/Ag (Au) interfaces show an average segregation level of (3.0±1.0)×1014 atoms/cm2 or 0.22±0.07 effective monolayers at 400 °C. Whereas {222} CdO/Ag (Au) interfaces in unannealed specimens show no evidence of gold segregation. These results are discussed in view of recent models of interfacial segregation.

AB - The first quantitative measurements of solute segregation at ceramic/metal (C/M) heterophase interfaces are presented for the MgO/Cu (Ag) and CdO/Ag (Au) systems. Interfaces are produced by internal oxidation of ternary alloys. Solute segregation at C/M interfaces is induced by intermediate-temperature annealing treatments. The Gibbsian interfacial excess of solute, Γsolute, at these interfaces is determined in a direct, quantitative manner by atom-probe field-ion microscopy (APFIM). These measurements are complemented in the MgO/Cu (Ag) system by a composition analysis of this interface employing electron energy loss spectroscopy (EELS). Analyses of 15 {222} MgO/Cu (Ag) interfaces by APFIM show an average segregation level of (4.0±1.9)×1014 atoms/cm2 or 0.22±0.10 effective monolayers at 500 °C. Analyses of three {222} CdO/Ag (Au) interfaces show an average segregation level of (3.0±1.0)×1014 atoms/cm2 or 0.22±0.07 effective monolayers at 400 °C. Whereas {222} CdO/Ag (Au) interfaces in unannealed specimens show no evidence of gold segregation. These results are discussed in view of recent models of interfacial segregation.

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U2 - 10.1016/S1359-6454(99)00256-6

DO - 10.1016/S1359-6454(99)00256-6

M3 - Conference article

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SN - 1359-6454

VL - 47

SP - 3953

EP - 3963

JO - Acta Materialia

JF - Acta Materialia

IS - 15

T2 - Proceedings of the 1998 ACTA Materiala Workshop on 'Materials Science and Mechanics of Interfaces'

Y2 - 25 October 1998 through 30 October 1998

ER -

Atomic-scale structure and chemistry of ceramic/metal interfaces - II. Solute segregation at MgO/Cu (Ag) and CdO/Ag (Au) interfaces

Abstract

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