Au–Sapphire (0001) solid–solid interfacial energy

This work presents an experimental methodology for the measurement of interfacial energy (γSP) and work of adhesion (Wad) of a metal–ceramic interface. A thin Au film was dewetted on the basal surface of sapphire substrates to form submicron-sized particles, which were analyzed using the Winterbotto...

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Bibliographic Details
Published inJournal of materials science Vol. 41; no. 16; pp. 5099 - 5107
Main Authors Sadan, Hila, Kaplan, Wayne D
Format Journal Article
LanguageEnglish
Published New York Springer Nature B.V 01.08.2006
Subjects
Adhesion tests
Balancing
Cermets
Crystal structure
Electron microscopy
Energy measurement
Energy transmission
Gold
Grain boundaries
Interfacial energy
Materials science
Microscopy
Morphology
Orientation relationships
Sapphire
Substrates
Thin films
Transmission electron microscopy
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Summary:This work presents an experimental methodology for the measurement of interfacial energy (γSP) and work of adhesion (Wad) of a metal–ceramic interface. A thin Au film was dewetted on the basal surface of sapphire substrates to form submicron-sized particles, which were analyzed using the Winterbottom method to determine the equilibrated particle–substrate solid–solid interfacial energy. Electron microscopy showed that a large portion of the particles contained grain boundaries, while all of the single crystalline particles had three distinct morphologies and orientations with the substrate. Two orientation relationships were determined from transmission electron microscopy, for which the interfacial energy in air at 1000 °C was determined: Au (111)–sapphire (0001): γSP = 2.15 ± 0.04 J/m2, Wad = 0.49 ± 0.04 J/m2; Au (100)–sapphire (0001): 2.18 ± 0.06 J/m2, Wad = 0.55 ± 0.07 J/m2.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-006-0437-5