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Showing 1 to 20 of 709 for “"thermal stability"”.
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Thermal stability of ultrathin magnetic metallic multilayers
Contains fulltext : 33153.pdf (Publisher’s version ) (Open Access)
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The thermal stability of bulk nanocrystalline steels
… This resulted in a noticeable improvement in thermal stability, although the austenite does eventually decompose at higher temperatures. Subsequent work led to an alloy which was designed not to resist cementite precipitation, but to tolerate it without the associated loss of austenite. This …
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Diffusion and the thermal stability of amorphous copper-zirconium
Measurements have been made of diffusion and thermal relaxation in amorphous CU50Zr50. Samples were prepared by melt-spinning under vacuum. Diffusion measurements were made over the temperature range from 317 to 385 C, using Ag and Au as substitutional impurities, by means of Auger electron …
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Structures and thermal stability of selected organic inclusion compounds
… X-ray diffraction technique. In addition the thermal stability and the structural properties of all compounds were investigated by thermal analysis techniques, including differential scanning calorimetry, thermogravimetry and hot-stage microscopy.
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Evaluating the Thermal Stability of Nanocrystalline Ag-Cu Alloys
… barrier to their implementation is their low thermal stability—they are prone to coarsening at very low homologous temperatures. Luckily, a thermodynamic approach to stabilizing the microstructures of nanocrystalline metals by adding an alloying element shows great promise. Recent improvements …
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Thermal stability of nano-structured selective emitters for thermophotovoltaic systems
A fundamental challenge in solar-thermal-electrical energy conversion is the thermal stability of materials and devices at high operational temperatures. This study focuses on the thermal stability of tungsten selective emitters for thermophotovoltaic (TPV) systems which are anticipated to enhance …
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Relationships between crystal structure, bonding and thermal stability of amphiboles
… the physical conditions of their formation. Hydrothermal stability studies of several amphibole endmembers have demonstrated that the FeMg₋₁ substitution produces a wide spread in thermal stability. The crystal structure, upon substitution, responds to the differences in cation size and site …
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Thermal Stability of Al₂O₃/Silicone Composites as High-Temperature Encapsulants
… manufacturers, e.g., P²SI, to evaluate polymer stability) at 250°C. These materials cracked during aging, causing their dielectric strength to decrease quickly (as soon as 3 days) and significantly (60 - 70%) to approximately 5 kV/mm, which is below the value required by semiconductor packaging. …
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Thermal stability criteria embedded in avanced control systems for batch process intensification
Thermal stability of batch processes is a major factor for the safe and efficient production of polymers and pharmaceutical chemicals. The prediction of thermal stability for such nonlinear, non steady-state processes is unreliable when using most stability criteria found in literature. A new …
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COMPARING LONG-TERM SOIL CARBON CONTENT AND THERMAL STABILITY AMONG DIFFERENT AGRICULTURAL SYSTEMS
Soil carbon stability is vital for maintaining the global carbon cycle balance, biodiversity conservation, and sustainable agriculture. While the earth’s climate is experiencing unprecedented changes in recent years and will be more unpredictable in the future, it is urgent to determine the factors …
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Crystallization, Morphology, Thermal Stability and Adhesive Properties of Novel High Performance Semicrystalline Polyimides
… performance polyimides that also display (a) thermal stability; (b) crystallinity in the initial material and ability to crystallize from the melt; (c) fast crystallization kinetics and (d) melt processability. This unique combination of properties is presently unavailable in any other …
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Hydrodynamic behavior and thermal stability of a PEGylated protein: Studies with hen egg lysozyme
… (PEGylation) on the hydrodynamic behavior and thermal stability of a model protein---Hen Egg Lysozyme (HEL). HEL was modified with a linear, 20-kD, PEG to produce mono (PEG1-HEL), di (PEG2-HEL), and triPEGylated (PEG3-HEL) species.</p><p>The hydrodynamic properties of HEL were altered upon …
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Rhenium, osmium and iridium diborides by mechanochemistry: Synthesis, structure, thermal stability and mechanical properties
… due to their unique mechanical, electrical, thermal and catalytic properties. In particular, transition metal diborides are of special interest. In the recent years, borides of rhenium (Re), osmium (Os) and iridium (Ir) have been studied as for their ultra-hardness and superior stiffness. In …
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Studies on the Oxidative and Thermal Stability of Complex Inorganic Compounds (Parts I-Iii)
Made available in DSpace on 2015-05-12T17:02:34Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 0019815.PDF: 2890491 bytes, checksum: 2a2d0d9c5c9cca0403d125e9ec13422d (MD5) Previous issue date: 1956
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Investigation of Different Types of Biochar on the Thermal Stability and Fire Retardancy of polymer
L'abstract è presente nell'allegato / the abstract is in the attachment
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Investigation of the determinants of thermal stability of the nitrile hydratase from Geobacillus pallidus RAPc8
The mechanisms of thermal stability have been a long studied subject for many years with the aim of enhancing thermal stability of protein molecules to enhance their application in industry. The nitrile hydratases group of enzymes catalyse the hydrolysis of nitriles to amides using an exothermic …
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Growth, characterization and thermal stability of undoped and in-situ doped silicon-germanium heteroepitaxial layers
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1993.
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First-principles modeling of thermal stability and morphology control of cathode materials in Li-ion batteries
… new method for predicting the thermodynamics of thermal degradation of charged cathode materials for rechargeable Li batteries and demonstrate it on three cathode materials, LixNiO₂, LixCoO₂, and LiMn2O₂. The calculated decomposition heat for the three systems is in good agreement with …
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Issues on Clean Diesel Combustion Technology Using Supercritical Fluids: Thermophysical Properties and Thermal Stability of Diesel Fuel
… related issues: fuel surrogates, diffusivity and thermal stability.</p> <p>Fuel surrogates are often used in engine research to mimic real fuel properties. In this work, ten diesel fuel surrogates were investigated, and the ability of these surrogates to predict diesel fuel properties was …
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