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 555 for “"Polycrystalline"”.
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Photoeffects at Polycrystalline Tin-Oxide Electrodes
Made available in DSpace on 2014-12-10T23:01:44Z (GMT). No. of bitstreams: 1 7412068.pdf: 3747083 bytes, checksum: 53177b21d43a6764d84ff9195deeab97 (MD5) Previous issue date: 1973
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Fracture Resistance of Coated Polycrystalline Silicon Wafers
… on the behaviour of solar-grade, large-grained polycrystalline silicon wafers under cyclic thermal and mechanical loadings. Mainly experimental studies were conducted on the failure of raw and polished wafers, uncoated and coated with nano-sized Si3N4 coatings. The wafers were mechanically …
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Oxidation kinetics of polycrystalline SrTiO₃ and LaCrO₃
<p>"The oxidation kinetics of polycrystalline SrTiO<sub>3</sub> and LaCrO<sub>3</sub> were determined by measuring the time and temperature dependence of the weight and conductivity change of reduced samples. A region of fast diffusion followed by a reduced diffusion tail was observed in the TGA …
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Polycrystalline elasto-viscoplasticity : application to B.C.C. metals
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1997.
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Polycrystalline Silicon TFTs for Large Area Electronic Application
This work focuses on low and high voltage Thin Film Transistors (TFTs) for large area flat panel displays and the related physical phenomena. All TFT samples in this work were fabricated using a low temperature, glass compatible poly-Si technology. Extensive numerical simulation and experimental …
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Grain boundary engineering in additively manufactured polycrystalline materials
… and reducing corrosion susceptibility in polycrystalline materials by increasing the fraction of low-energy grain boundaries. However, conventional GBE relies on complex cycles of mechanical deformation and annealing, which is incompatible with the precision-engineered geometries of …
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Modeling the Mechanical Response of Polycrystalline Thin Films
… advance. Electrodeposited thin nickel (Ni) polycrystalline films in MEMS often show fiber texture resulting in transverse isotropic elastic properties. It is of interest to determine these elastic properties, in particular the in-plane Young's modulus, since it plays a fundamental role in …
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Growth of Textured Mullite Fibers Using Polycrystalline Precursors
… were prepared by HF leaching and templated into polycrystalline mullite fibers by extrusion. Textured growth of mullite fibers with elongated grains, aligned along the long-axis of the fibers, was achieved by heat treatment. Repeated heat treatment cycles of a whisker-templated fiber showed a …
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Cyclic Hardening and Softening Effects in Polycrystalline Copper
Made available in DSpace on 2014-12-10T17:25:31Z (GMT). No. of bitstreams: 1 6503638.pdf: 1838291 bytes, checksum: 52246b0e8e7bca5d930ef28cdb3ac781 (MD5) Previous issue date: 1964
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Deformation mechanisms in a polycrystalline Ni-based superalloy
… been found under tensile test conditions in a polycrystalline alloy. Microtwinning became active at higher strains showing that the dominant deformation mechanism can change at different stages of the deformation process, e.g. from simultaneous SF and antiphase boundary (APB)-coupled shear to …
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Polycrystalline plasticity and its applications to deformation processing
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
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A continuum surface layer effect in polycrystalline aggregates
Uniaxial tension tests on uniform cross section specimens of Ti-6Al-4V and aluminum 7475-T651 show that the stress in the direction of load application determined by x-ray diffraction and the nominal applied stress display the expected linear correspondence up to a maximum stress somewhat below the …
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Multi-Frequency Electronic Magnetic Resonance Studies of Polycrystalline Systems
… applied to the EMR studies of two distinct polycrystalline paramagnetic systems resulted in dramatic resolution improvements.
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Fatigue crack growth in polycrystalline alumina at high temperatures
… behavior in a commercial and a hot-pressed polycrystalline Al$\sb2$O$\sb3$ was examined under monotonic tensile loading (static fatigue) and under Mode-I tension-tension cyclic loading (cyclic fatigue). The investigation of fatigue crack growth in polycrystalline Al$\sb2$O$\sb3$ has …
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Low temperature lattice instability in single and polycrystalline ZrV2.
Thesis: Sc. D., Massachusetts Institute of Technology, Department of Materials Science and Engineering, 1978
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Polycrystalline plasticity : application to deformation processing of lightweight metals
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1998.
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Crystallization in self-implanted polycrystalline silicon-on-insulator films
Bibliography: leaves 118-122.
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