Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 67 for “"sinter"”.
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The variation of sinter strength in the sinter bed due to the mineral phase distribution
Please read the abstract in the section 00front of this document
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Applying U-Th Disequilibrium to Dating Siliceous Sinter
… surface by deposits of microlaminated siliceous sinter, have the potential to trace hydrothermal histories. Previous attempts to use radiocarbon (14C) dating in active modern systems have encountered problems matching ages with stratigraphy, possibly due to contamination with old carbon leading …
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Modelado geológico del área del sinter, proyecto La Josefina, provincia de Santa Cruz
… de edad jurásica media a superior. El área del sinter, ubicada en el sector Noreste del proyecto, se diferencia del resto de los sectores por la ausencia de estructuras vetiformes de gran desarrollo, la presencia en superficie de una capa fuertemente silicificada con brechas hidrotermales …
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Sinter-patterning of oxide dielectric and high critical transition temperature films by pulsed neodymium:YAG laser
Using metallo-organic precursors formulated based on metal carboxylates, various oxide dielectric films (ZrO$\sb2$, Y$\sb2$O$\sb3$ yttria stabilized zirconium (YSZ)), perovskite based oxide films (BaTiO$\sb3$, SrTiO$\sb3$, CaTiO$\sb3$, YBa$\sb2$Cu$\sb3$O$\sb{\rm 7-x}$), and …
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Analysis of sinter-based additive manufacturing techniques for the sustainable production of objects for the fashion industry
L'abstract è presente nell'allegato / the abstract is in the attachment
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Lithofacies and Microfacies of a Fossil Hot Spring System: McGinness Hills, Nevada
… Dr. Nancy Hinman The Miocene McGinness Hills sinters are a well-preserved, fossil hot spring system in Nevada. The sinter in McGinness Hills is comparable with the fossil hot spring system in the Drummond Basin, Queensland, Australia (Farmer and Hinman, 1998), Artist Point in Yellowstone …
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Lithofacies and Microfacies of a Fossil Hot Spring System: McGinness Hills, Nevada
… Dr. Nancy Hinman The Miocene McGinness Hills sinters are a well-preserved, fossil hot spring system in Nevada. The sinter in McGinness Hills is comparable with the fossil hot spring system in the Drummond Basin, Queensland, Australia (Farmer and Hinman, 1998), Artist Point in Yellowstone …
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Design of parallel plate condensers with sintered wicks for a loop heat pipe
… to explore condensation within open and sinter channel geometries while varying flow rate, backside cooling, and gravitational orientation. Open channel flow exhibited sensitivity to cooling heat transfer and orientation resulting in a variable condensing length connected to a sharp drop …
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Dating and Interpretation of Secondary Carbonate Deposits from the Last Interglacial
… warming occurred 135,000 years (135 kyr) ago. Sinter growth was interrupted from 130 kyr to 126 kyr, suggesting, that a cooler period preceded the start of the classical Eemian. Two additional growth interruptions within the Eemian suggest an unstable progression of the Last Interglacial, which …
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Processing and characterization of nanocrystalline ceria
… point (2400⁰) of pure CeO₂ makes it difficult to sinter. In this dissertation, a semi-batch reactor method was developed for directly synthesizing undoped an doped, nanometer-scale CeO₂ particles at room temperature"--Abstract, page iv.
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THE REACTIVITY OF SOME TRANSITION METAL NITRIDES AND CARBIDES
… and type of bonding. The principles of sintering are summarised. Tlie theory and applications of thermal analytical techniques are reviewed. Surface area determination and estimation of average crystallite size by the BET method utilizing the adsorption of nitrogen gas at -196 X are …
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Consolidation of Al-TiO₂ and Ti₃Al-Ai₂O₃ composite powders
Pressureless sintering, hot pressing and sinter-HIP of Ti₃Al-Al₂O₃ and Al-TiO₂ composite powders have been carried out under inert atmospheres. The Al-TiO₂ composite powders were produced by discus milling Al/TiO₂ powder mixtures followed by ball milling. The Ti₃Al-Al₂O₃ composite powders were …
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Molecular pathways of silica nanoparticle formation and biosilicification
… that control the growth rate and texture of sinters and the diversity and silicification of associated microbial communities and (ii) lab studies that focussed on the kinetics and mechanisms of silica nanoparticle forination under conditions mimicking natural geothermal environments. The …
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Mesoporous silica encapsulated metal nanoparticles in catalysis
… and bimetallic nanoparticles with high sinter-resistance for high-temperature treatment, and enables their applications for harsh reaction conditions and fundamental mechanism studies. Several examples of silica-encapsulated nanoparticles have been demonstrated in this thesis to study …
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Manufacturing and characterization of welded, sintered condensers for a loop heat pipe
… was developed for a welded condenser utilizing a sintered wick. Electronic devices have progressed to the point where new designs are limited by the thermal management system used to ensure safe operating temperatures. Coupling the effects of high surface area of multiple condensers, the low …
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Sintering and joining of low temperature co-fired tungsten and aluminum oxide
… performed to obtain a better understanding of sintering and joining of the tungsten/alumina system processed at temperatures near or below 12000C. The technique of activated sintering for tungsten is investigated, whereby a minimal content of additives enables low firing temperatures through a …
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Development of Cu particle sintering as die attach solution for high temperature electronics applications
This PhD thesis, “Development of Cu Particle Sintering as Die Attach Solution for High Temperature Electronics Applications”, submitted to TU Berlin, investigates innovative copper (Cu) sintering techniques for die-attach applications in high-temperature electronics, particularly for wide bandgap …
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Low shrinkage metal skeletons by three dimensional printing
… Subsequent heat treatments de-bind and lightly sinter the printed parts. In another heat treatment operation, the printed parts are infiltrated with a molten metal alloy. The growth of the necks during the sintering step causes a shrinkage of the part which, in general, is not uniform and has a …
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