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Showing 1 to 20 of 20 for “"Titanium Diboride"”.
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Pressureless Densification of Alumina - Titanium Diboride Ceramic Matrix Composites
The research focus was to determine diffusion mechanisms responsible for densification behavior of SHS produced Al2O3/TiB2 Ceramic Matrix Composites (CMCs). Previous research has shown SHS produced Al₂O₃/TiB₂ composites exhibited unique microstructural properties that contributed to high strength, …
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Reaction Synthesis of Titanium Aluminide / Titanium Diboride in-Situ Composites
… the effects of changing the stoichiometry of the titanium aluminide matrix, and the effects of extrinsic reaction variables on the behavior of the reaction were studied and compared to theoretical predictions. It was shown that changing the stoichiometry of the titanium aluminide did have an …
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Aligned Continuous Cylindrical Pores Derived from Electrospun Polymer Fibers in Titanium Diboride
… range ordered multi-scale porous structures in titanium diboride (TiB2) is investigated in this work. The introduction of electrospun PS fibers as a sacrificial filler into a colloidal suspension of TiB2 allows for easy control over the pore size, porosity, and long range ordering of the porous …
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Thermal conductivity and electrical resistivity of cemented carbides, titanium diboride and high temperature ceramic superconductors
… carbide grains. In high purity polycrystalline titanium diboride it is found that scattering of phonons and electrons from defects is an important cause of thermal resistivity. The scattering centers are boron vacancies and particles of elemental carbon."
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Understanding How Tape Casting Titanium Diboride Shifts its Processing-Microstructure-Properties Paradigm Toward New Applications
… materials beyond aerospace. One of the UHTCs, titanium diboride (TiB2) exhibits high electrical and thermal conductivity that could satisfy the needs of functional ceramic component applications, like battery cathodes, by tailoring its microstructure and architecture. This thesis represents one …
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SYNTHESIS, PROCESSING, AND CHARACTERIZATION OF TITANIUM CARBIDE AND TITANIUM DIBORIDE BASED MATERIALS FOR STRUCTURAL AND ELECTRONIC APPLICATION
… synthesis, processing, and characterization of titanium carbide (TiC) and titanium diboride (TiB2) based materials for structural and electronic application. A series of TiB2 and TiC-TiB2 powders was prepared through a novel carbon coated precursors method. Reaction process, phase evolution, and …
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Effects of vapor transport and gravity on the self propagating high temperature synthesis of titanium diboride, The
Includes bibliographical references (pages 174-180).
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Multi-Omics Analysis of 3D SKOV3 Ovarian Cancer Model Cell line Cultured on Novel Silicon-Titanium Diboride Micropatterned Substrate
… This study adopts the micropatterned Silicon Titanium Diboride (SiTiB2) for improved ovarian cancer modeling to identify the molecular signatures that drives dynamic transformation during ovarian cancer metastasis. The ovarian cancer model cell line SKOV3 was cultured on a novel SiTiB2 a …
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MICROFABRICATION OF TITANIUM DIBORIDE PATTERNED ON SILICON SUBSTRATES FOR MONO- AND CO-CULTURE OF ENDOTHELIAL AND MESENCHYMAL STEM CELLS
… cells and mesenchymal cells on biocompatible titanium diboride substrates patterned as circles and lines organized as arrays to induce interaction of these layers with the Islets of Langerhans for their in vitro prolonged viability. Our designed BIOMEMS device evaluates the influence of …
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The influence of microstructure on the mechanical properties of some refractory compounds
… microstructure of transition metal carbides and diborides. The local atomic structure of amorphous titanium diboride thin films, prepared by electron beam vaporization of the crystalline compound onto liquid nitrogen-cooled substrates, is examined using extended x-ray absorption fine structure …
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Thermomechanical Modeling of Oxidation Effects in Porous Ultra-High Temperature Ceramics
… in the thermomechanical response of porous titanium diboride have been investigated. An in-house quasi-static material point method tool was used to perform two -dimensional plane strain simulations on unoxidized hexagonal representative volume elements (RVEs) with macroporosity volume …
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Specific Heat and Thermodynamic Properties of Metallic Systems: Instrumentation and Analysis
… Additionally, the specific heats of α-uranium, titanium diboride, and lithium flouride have been measured on a low-temperature, semi-adiabatic calorimeter down to 0.5 K. For the α-uranium, the specific heat of a polycrystalline sample was compared to that of a single crystal, and it was found …
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Investigating the Thermo-Mechanical Behavior of Highly Porous Ultra-High Temperature Ceramics using a Multiscale Quasi-Static Material Point Method
… of multiscale porous UHTCs, specifically titanium diboride, and validate those results against experimental results so as to build confidence in the model. An implicit quasi-static variant of the Material Point Method (MPM) is developed, whose capabilities include intrinsic treatment of …
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Novel Micropatterned Substrate for Investigation of Ovarian Cancer Aggregate Formation and Response to Epigenetic Drug Therapy
… circuit fabrication utilizing micropatterns of titanium diboride etched on a silicon wafer (Si-TiB2). TiB2 micropatterns on the Si background establish stiffness, roughness, wetness, and charge gradients to induce selective deposition of growth factors, enabling self-assembly of cells into 3D …
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Acid Leaching of SHS Produced MgO/TiB2
… reaction involving magnesium oxide (MgO), titanium dioxide (TiO₂), and boron oxide (B₂O₃) forms titanium diboride (TiB₂) and MgO as final products. Selective acid leaching is used to remove the MgO leaving high purity TiB₂ powder. The SHS method to produce TiB₂ is attractive because of the …
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Synthesis and characterization of ceramics in the Ti-B-N-C system
Titanium and boron nitride and carbide, titanium diboride were synthesized by carbothermic reduction as single phase as well as mixtures intended to form composite materials. The aim of the project is to study the physical chemistry of carbothermic reduction for the production of pure nonoxide …
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Experimental and numerical analysis of abrasive waterjet drilling of brittle materials
… alumina, silicon nitride, silicon carbide, and titanium diboride, was studied by varying the AWJ input parameters. The AWJ machining forces on these materials were measured and discussed. First, an SEM study was conducted to investigate the AWJ machining mechanisms on continuous fiber-reinforced …
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Manufacturing and properties of titanium-based materials produced by selective laser melting
… laser melting (SLM) to produce commercially pure titanium (CP-Ti) parts. Accurate manipulation of SLM parameters is applied to produce nearly fully dense (>99.5%) CP-Ti parts without any posttreatments. Compared with output from traditional technologies, the microhardness, compressive and tensile …
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Effect of Processing Parameters on Bond Strength and Effective Plasticity in Al2O3-TiB2 Composites
Alumina-titanium diboride (Al2O3-TiB2) composites have high temperature, wear, and impact resistance that could be useful in high performance applications. Determining the effect of processing parameters on relative bond strength and effective plasticity may contribute to optimization and …
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Electron energy loss spectroscopy of transition-metal carbides
Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-13T14:57:08Z No. of bitstreams: 1 1983_allison.pdf: 3824629 bytes, checksum: c0a995c7c2bcca1cad4a44e6d628a004 (MD5)