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AuthorDenis, Pierredc.contributor.author
Date of accession2020-06-29T14:11:49Zdc.date.accessioned
Available in OPARU since2020-06-29T14:11:49Zdc.date.available
Year of creation2019dc.date.created
Date of first publication2020-06-29dc.date.issued
AbstractMetallic glasses are defined as amorphous metallic alloys since they combine the disordered atomic structure of traditional glasses with metallic interatomic bounding. As a result, they possess unique mechanical, magnetic and physical properties which makes them highly interesting for several applications. However, the lack of structural heterogeneities presents some drawbacks, since it is difficult to tailor the properties of this material in comparison to traditional polycrystalline metals. Furthermore, the plasticity of metallic glasses is rather limited and most of the time localized in one single shear band, which is a severe drawback for most applications. The aim of this doctoral thesis was to introduce structural heterogeneities at the nanoscale in metallic glasses in order to improve their plasticity and tailor their physical properties. These heterogeneities have been introduced by severe plastic deformation in bulk samples and by controlling the sputtering conditions in thin films. It was shown that severe plastic deformation modifies the plastic behaviour of the material, leading to a less serrated flow during nanoindentation. The growth modes responsible for the different thin film microstructures could be well understood. It was also demonstrated that nanoporous gold can be obtained by dealloying thin film metallic glass with the proper initial microstructure. Due to their high specific area and Au content, these dealloyed thin films are of high interest for applications such as catalyzers or surface-enhanced Raman spectroscopy.dc.description.abstract
Languageendc.language.iso
PublisherUniversität Ulmdc.publisher
LicenseStandarddc.rights
Link to license texthttps://oparu.uni-ulm.de/xmlui/license_v3dc.rights.uri
KeywordMetallic glassdc.subject
KeywordNanoglassdc.subject
KeywordHigh-pressure torsiondc.subject
Keyworddealloyingdc.subject
KeywordThin filmdc.subject
KeywordAlloysdc.subject
KeywordSputteringdc.subject
Dewey Decimal GroupDDC 530 / Physicsdc.subject.ddc
LCSHMetallic glassesdc.subject.lcsh
LCSHHigh pressure physicsdc.subject.lcsh
LCSHAlloysdc.subject.lcsh
LCSHSputtering (Physics)dc.subject.lcsh
TitleNanostructured metallic glasses : structure, properties and applicationsdc.title
Resource typeDissertationdc.type
Date of acceptance2019-12-10dcterms.dateAccepted
RefereeFecht, Hans-Jörgdc.contributor.referee
RefereeLöffler, Jörg F.dc.contributor.referee
DOIhttp://dx.doi.org/10.18725/OPARU-32207dc.identifier.doi
PPN1702946835dc.identifier.ppn
URNhttp://nbn-resolving.de/urn:nbn:de:bsz:289-oparu-32269-5dc.identifier.urn
GNDMetallisches Glasdc.subject.gnd
GNDNichtedelmetall-Legierungdc.subject.gnd
FacultyFakultät für Ingenieurwissenschaften, Informatik und Psychologieuulm.affiliationGeneral
InstitutionInstitut für Funktionelle Nanosystemeuulm.affiliationSpecific
Grantor of degreeFakultät für Ingenieurwissenschaften, Informatik und Psychologieuulm.thesisGrantor
DCMI TypeTextuulm.typeDCMI
CategoryPublikationenuulm.category
EU projectVITRIMETTECH / Vitrified Metals Technologies and Applications in Devices and Chemistry / EC / FP7 / 607080uulm.projectEU
University Bibliographyjauulm.unibibliographie


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