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 30 for “"directional solidification"”.
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Modeling transport processes in directional solidification.
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1994.
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Directional solidification processing of BYC oxides by Hua Shen.
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1995.
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Formation and selection of highly nonlinear microstructure during directional solidification
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1991.
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Morphology and dynamics of cellular interfacial microstructure during directional solidification
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1990.
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Mathematical and physical modelling of directional solidification of aerospace alloys
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1996.
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Effects of static axial magnetic fields on directional solidification of HgCdTe
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1997.
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Effect of fields on uni-directional solidification of aqueous salt solutions.
Thesis: B.S., Massachusetts Institute of Technology, Department of Metallurgy, 1966
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On the length-scale and location of channel nucleation in directional solidification
This work provides evidence that channels in directionally solidified hypoeutectic Pb-Sn alloys nucleate at the dendrite tips. Using a finite-element simulator, distinctive 'convective signatures' are shown to exist for convectively unstable cases, where the instability of a system is shown to be …
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Thermosolutal convection in directional solidification of dilute and non-dilute binary alloys
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1986.
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Solidification of eutectics utilizing directional solidification and confining templates for optical metamaterial applications
… such as the phase separation found in eutectic solidification. Due to the periodic nature of eutectics, these materials are a great choice for applications in optical metamaterials. The goal of this thesis is to understand and apply directional solidification of eutectics to form unique …
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Development of a melting and directional solidification process for improving the grain structure and electronic properties of a silicon wafer
… herein described was developed to melt and directionally solidify fine-grained silicon wafers at accelerated feed rates for improved electronic properties. The proposed process encapsulates a fine grained silicon wafer which is then sandwiched between two substrates with a specialized …
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Field induced orientation of semicrystalline and non-crystallne block copolymer microdomain patterns
… well as in thin film by employing flow fields, directional solidification, and substrates. In bulk systems, flow fields generated by the 'roll casting' process orient amorphous cylindrical microdomains along the flow direction in a semicrystalline block copolymer. Subsequent crystallization of …
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Phase-Fields and the Renormalization Group: A Continuum Approach to Multiscale Modeling of Materials
… confinement on dendritic growth, during equiaxed solidification in a pure material and the directional solidification of a dilute binary alloy, using phase-field models.
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Nanoscale solidification of metals by atomistic simulations: From nucleation to nanostructural evolution
<p>"Homogeneous nucleation during solidification in Al (fcc), Fe (bcc) and Mg (hcp) is studied by million-atom molecular dynamics (MD) utilizing the second nearest neighbor modified embedded atom method (2NN-MEAM) potentials. Spontaneous homogenous nucleation from the melt was produced without any …
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Corrosion of Aluminum-Iron Eutectic Composites
… and individual phases, prepared by employing directional solidification or special mechanical processing to vary microstructure, was studied under conditions of preferential corrosion of the Al(,3)Fe second phase in 2.4 M H(,2)SO(,4) and preferential corrosion of the aluminum matrix by pitting …
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Ein Multi-Phasen-Feld-Modell für facettiertes Kristallwachstum
… of silicon near thermal equilibrium or in a directional solidification environment. Physical models for interfacial energy and mobility of silicon in dependence of the crystallographic orientation for solid-liquid and solid-solid interfaces are defined. The relevance of the model to the …
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Einfluss von Strömungen auf die Entwicklung des Mikrogefüges bei der gerichteten Erstarrung von Al-Si- und Al-Si-Mg-Legierungen
… and the binary counterpart Al-7wt.%Si have been directionally solidified upwards over a wide range of constant solidification velocities (0.0075 - 0.15mm/s) under medium temperature gradient (3K/mm) in the furnace facility ARTEMIS under natural convective and forced fluid flow conditions. This …
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