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dc.contributor.advisorChattopadhyay, Kamanio
dc.contributor.advisorDas, Pushpendu Kumar
dc.contributor.authorBysakh, Sandip
dc.date.accessioned2005-07-27T09:10:01Z
dc.date.accessioned2018-07-31T05:53:35Z
dc.date.available2005-07-27T09:10:01Z
dc.date.available2018-07-31T05:53:35Z
dc.date.issued2005-07-27T09:10:01Z
dc.date.submitted2001
dc.identifier.urihttp://etd.iisc.ac.in/handle/2005/135
dc.identifier.srnonull
dc.description.abstractThis thesis is devoted to the deposition of intermetallic thin films by laser ablation deposition (LAD) and their characterization. Pulsed laser ablation and subsequent deposition of the ablated vapours produces films under conditions very far away from equilibrium. Besides the film, which forms directly by quenching the vapour or plasma on substrate, one also obtains under certain conditions micron and sub-micron sized spherical droplets of alloy melt on to the film. The latter travel at very high velocities and impinge on the substrate resulting in a very high rate of heat transfer during solidification from liquid state. Therefore, in this work it was possible to study the microstructure evolution depending on quenching rates of different sized droplets and compare with the extreme case of vapour/plasma quenching. The compositions selected correspond to the intermetallic compounds in Al-Fe, Al-Ni and Ti-Si binary systems. Pre-alloyed targets of the appropriate intermetallic compositions were used for ablation by laser. The deposition system has been designed and built in-house. The characterization is mainly done by transmission electron microscopy (TEM). The study focuses on microstructure and phase evolution within these intermetallic films at room temperature, at elevated temperature and during heating the room temperature deposited films in heating stage inside the TEM.en
dc.format.extent749524 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.publisherIndian Institute of Scienceen
dc.rightsI grant Indian Institute of Science the right to archive and to make available my thesis or dissertation in whole or in part in all forms of media, now hereafter known. I retain all proprietary rights, such as patent rights. I also retain the right to use in future works (such as articles or books) all or part of this thesis or dissertation.en
dc.subject.classificationMetallurgyen
dc.subject.keywordLaser Ablationen
dc.subject.keywordIntermetallicen
dc.subject.keywordMetastable Phasesen
dc.subject.keywordUltra-fine Microstructuresen
dc.subject.keywordThin Filmsen
dc.titlePulsed Laser Ablation Deposition of Intermetallic Thin Films: A Study of Evolution of Metastable Phases and Ultra-fine Microstructuresen
dc.typeElectronic Thesis and Dissertationen
dc.degree.namePhDen
dc.degree.levelDoctoralen
dc.degree.grantorIndian Institute of Scienceen
dc.degree.disciplineFaculty of Engineeringen


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