Thermal Characteristics of Australian Sedimentary Opals

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dc.contributor.author Brown, LD
dc.contributor.author Ray, AS
dc.contributor.author Thomas, P
dc.contributor.author Guerbois, JL
dc.date.accessioned 2009-06-26T04:10:48Z
dc.date.issued 2002-01
dc.identifier.citation Journal of Thermal Analysis and Calorimetry, 2002, 68 (1), pp. 31 - 36
dc.identifier.issn 1388-6150
dc.identifier.other C1UNSUBMIT en_US
dc.identifier.uri http://hdl.handle.net/10453/523
dc.description.abstract Naturally occurring opals from three different regions in Australia were studied for their thermal characteristics. All the opals showed initial expansion followed by contraction in thermomechanical analysis (TMA) although the temperature at which the change from expansion to contraction occurred depended on their provenance. Thermogravimetric analysis (TG) revealed different rates and temperatures of dehydration for these opals. A general correlation between the temperature at which there was a zero thermal expansion and that of the maximum rate of dehydration was observed. A dehydrationsintering mechanism is proposed with the effect of sintering being more pronounced following total dehydration.
dc.format Scott McWhirter
dc.publisher Kluwer Academic Publishers
dc.title Thermal Characteristics of Australian Sedimentary Opals
dc.type Journal Article
dc.parent Journal of Thermal Analysis and Calorimetry
dc.journal.volume 1
dc.journal.volume 68
dc.journal.number 1 en_US
dc.publocation Dordrecht, Netherlands en_US
dc.identifier.startpage 31 en_US
dc.identifier.endpage 36 en_US
dc.cauo.name SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.for 0306 Physical Chemistry (Incl. Structural)
dc.personcode 960405
dc.personcode 910825
dc.personcode 860311
dc.percentage 100 en_US
dc.classification.name Physical Chemistry (incl. Structural en_US
dc.classification.type FOR-08 en_US
dc.description.keywords amorphous silica, opal, TG, TMA
dc.description.keywords amorphous silica, opal, TG, TMA
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group /University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group /University of Technology Sydney/Faculty of Science
pubs.organisational-group /University of Technology Sydney/Strength - Built Infrastructure
pubs.organisational-group /University of Technology Sydney/Strength - Built Infrastructure
pubs.organisational-group /University of Technology Sydney/Strength - Management and Organisation Studies
pubs.organisational-group /University of Technology Sydney/Strength - Management and Organisation Studies
utslib.copyright.status Closed Access
utslib.copyright.date 2015-04-15 12:17:09.805752+10
utslib.copyright.date 2015-04-15 12:17:09.805752+10
pubs.consider-herdc false
pubs.consider-herdc false
utslib.collection.history School of Chemistry and Forensic Science (ID: 339)
utslib.collection.history School of Chemistry and Forensic Science (ID: 339)
utslib.collection.history Closed (ID: 3)
utslib.collection.history Closed (ID: 3)


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