High resolution electron microscopy of silver β- and β″ -aluminas

R. Hull; AK Petford; CJ Humphreys; DJ Smith

doi:10.1016/0167-2738(83)90231-X

High resolution electron microscopy of silver β- and β″ -aluminas

R. Hull^*, AK Petford, CJ Humphreys, DJ Smith

^*Corresponding author for this work

Materials Science and Engineering

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

4 Scopus citations

Abstract

The structure and properties of silver β- and β″-aluminas have been investigated by high resolution electron microscopy at 200 and 500kV. Both materials exhibited the loss of silver-containing conduction planes under the influence of the electron beam, causing the structure to collapse and shear, forming broad defect spinel blocks. The structure of these defects in silver β″-alumina was investigated and a model for the atomic arrangement within the defects proposed. It was found that the electron beam caused extrusion of silver from both materials by two separate mechanisms; these mechanisms may shed light on the inter-granular resistivity in β-alumina type materials and on the formation and propagation of cracks. The structure of the conduction planes in silver β-alumina was also studied, and samples of sodium β″-alumina ion-exchanged to different extents with silver were investigated.

Original language	English (US)
Pages (from-to)	181-186
Number of pages	6
Journal	Solid State Ionics
Volume	9-10
Issue number	PART 1
DOIs	https://doi.org/10.1016/0167-2738(83)90231-X
State	Published - Dec 1983

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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@article{1ea7e9fc9a504a6cb8fdeb5854fad056,

title = "High resolution electron microscopy of silver β- and β″ -aluminas",

abstract = "The structure and properties of silver β- and β″-aluminas have been investigated by high resolution electron microscopy at 200 and 500kV. Both materials exhibited the loss of silver-containing conduction planes under the influence of the electron beam, causing the structure to collapse and shear, forming broad defect spinel blocks. The structure of these defects in silver β″-alumina was investigated and a model for the atomic arrangement within the defects proposed. It was found that the electron beam caused extrusion of silver from both materials by two separate mechanisms; these mechanisms may shed light on the inter-granular resistivity in β-alumina type materials and on the formation and propagation of cracks. The structure of the conduction planes in silver β-alumina was also studied, and samples of sodium β″-alumina ion-exchanged to different extents with silver were investigated.",

author = "R. Hull and AK Petford and CJ Humphreys and DJ Smith",

note = "Funding Information: The Cambridge University 600kV High Resoluction Electron Microscope Project is supported by the Science and Engineering Research Council. Two of the authors (RH and AKP) thank the Science and Engineering Research Council and Chloride Silent Power Ltd for financial support. The specimens used in this study were supplied by the British Rail Technical Centre, Derby~ UK, (silver B''-alumina) and the Clarendon Laboratory, Oxford, UK (silver 6-alumina). Copyright: Copyright 2014 Elsevier B.V., All rights reserved.",

year = "1983",

month = dec,

doi = "10.1016/0167-2738(83)90231-X",

language = "English (US)",

volume = "9-10",

pages = "181--186",

journal = "Solid State Ionics",

issn = "0167-2738",

publisher = "Elsevier",

number = "PART 1",

}

TY - JOUR

T1 - High resolution electron microscopy of silver β- and β″ -aluminas

AU - Hull, R.

AU - Petford, AK

AU - Humphreys, CJ

AU - Smith, DJ

N1 - Funding Information: The Cambridge University 600kV High Resoluction Electron Microscope Project is supported by the Science and Engineering Research Council. Two of the authors (RH and AKP) thank the Science and Engineering Research Council and Chloride Silent Power Ltd for financial support. The specimens used in this study were supplied by the British Rail Technical Centre, Derby~ UK, (silver B''-alumina) and the Clarendon Laboratory, Oxford, UK (silver 6-alumina). Copyright: Copyright 2014 Elsevier B.V., All rights reserved.

PY - 1983/12

Y1 - 1983/12

N2 - The structure and properties of silver β- and β″-aluminas have been investigated by high resolution electron microscopy at 200 and 500kV. Both materials exhibited the loss of silver-containing conduction planes under the influence of the electron beam, causing the structure to collapse and shear, forming broad defect spinel blocks. The structure of these defects in silver β″-alumina was investigated and a model for the atomic arrangement within the defects proposed. It was found that the electron beam caused extrusion of silver from both materials by two separate mechanisms; these mechanisms may shed light on the inter-granular resistivity in β-alumina type materials and on the formation and propagation of cracks. The structure of the conduction planes in silver β-alumina was also studied, and samples of sodium β″-alumina ion-exchanged to different extents with silver were investigated.

AB - The structure and properties of silver β- and β″-aluminas have been investigated by high resolution electron microscopy at 200 and 500kV. Both materials exhibited the loss of silver-containing conduction planes under the influence of the electron beam, causing the structure to collapse and shear, forming broad defect spinel blocks. The structure of these defects in silver β″-alumina was investigated and a model for the atomic arrangement within the defects proposed. It was found that the electron beam caused extrusion of silver from both materials by two separate mechanisms; these mechanisms may shed light on the inter-granular resistivity in β-alumina type materials and on the formation and propagation of cracks. The structure of the conduction planes in silver β-alumina was also studied, and samples of sodium β″-alumina ion-exchanged to different extents with silver were investigated.

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U2 - 10.1016/0167-2738(83)90231-X

DO - 10.1016/0167-2738(83)90231-X

M3 - Article

AN - SCOPUS:0020904088

SN - 0167-2738

VL - 9-10

SP - 181

EP - 186

JO - Solid State Ionics

JF - Solid State Ionics

IS - PART 1

ER -

High resolution electron microscopy of silver β- and β″ -aluminas

Abstract

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