Título:
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Structural and mechanical properties of Zr1-x Mox thin films: from the nano-crystalline to the amorphous state
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Autor/a:
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Borroto-Ramírez, Alejandro; Bruyère, Sthepanie; Thurieau, Nicolas; Gendarme, Christine; Jiménez Piqué, Emilio; Roa Rovira, Joan Josep; Pierson, Jean Fronçois; Mücklich, Franck; Horwat, David
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Otros autores:
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Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica; Universitat Politècnica de Catalunya. CIEFMA - Centre d'Integritat Estructural, Micromecànica i Fiabilitat dels Materials |
Abstract:
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Zr1-xMox thin films were synthesized on glass substrates by co-sputtering molybdenum and zirconium targets in the presence of argon with x in the 0.32–0.95 range. From X-ray diffraction analyses and transmission electron microscopy images it was possible to observe an evolution of the samples structure from a nano-crystalline solid solution of Zr in the bcc lattice of Mo to clusters of Zr(Mo) nano-crystalline in an amorphous matrix. The coherence length deduced from X-ray diffractograms was around 1 nm–8 nm depending on the composition. Mechanical measurements show that the films exhibited high hardness H, low Young's modulus E and therefore high H/E ratio compared with the bulk of Zr and Mo. We also found a low friction coefficient values for all the samples. Finally, an inverse Hall-Petch effect was observed for coherence length lower than 6 nm. |
Abstract:
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Peer Reviewed |
Materia(s):
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-Àrees temàtiques de la UPC::Enginyeria dels materials -Thin films -Nanostructured materials -Materials--Mechanical properties -Transmission electron microscopy -Atomic scale structure -Mechanical properties -Metals and alloys -Nanostructured materials -Thin films -Transmission electron microscopy -Materials nanoestructurats -Materials -- Propietats mecàniques -Microscòpia electrònica de transmissió |
Derechos:
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Tipo de documento:
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Artículo - Versión publicada Artículo |
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