Results 161 to 170 of about 1,292 (211)
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Electrical Resistivity of Titanium Diboride and Zirconium Diboride
Journal of the American Ceramic Society, 1995The electrical resistivities of hot‐pressed samples of Ti 1‐ x Zr x B 2 ( x
Matiur Rahman +4 more
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Surface and Coatings Technology, 2011 The use of titanium diboride films as protective coatings was proposed for several applications because of its mechanical and tribological properties, as well as chemical and thermal stabilities.
M E H Maia da Costa, F L Freire
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Corrosion of titanium diboride
Journal of the Less Common Metals, 1975Abstract The corrosion resistance of pressed and sintered (PAS) titanium diboride has been compared with that of electrodeposited titanium diboride. Anodic polarization studies in 0.5 M sulfuric acid showed that PAS titanium diboride corrodes at rates of 50 to 100 times greater than electrodeposited titanium diboride.
B.S. Coving +3 more
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Dislocations in titanium diboride
Philosophical Magazine A, 1991Abstract In this investigation, it was shown that titanium diboride would plastically deform at a temperature of 1273 K and at a stress level much lower than predicted by previous experimental data. The crystal structure of titanium diboride is a topologically hexagonal structure which allows for a number of possible slip systems.
L. Wang, R. J. Arsenault
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Reactive sputtering of titanium diboride and titanium disilicide
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, 1997Nanocomposite films of titanium nitride in either boron nitride or silicon nitride matrices were prepared by reactive sputtering of titanium diboride or titanium disilicide targets in a nitrogen plasma. These films were expected to have high dielectric constants and in the case of the silicon nitride matrix high hardness.
L. Maya, C. E. Vallet, J. N. Fiedor
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Physica Status Solidi (a), 1989
Transmission electron microscopy is used to examine the structure of shock-loaded titanium diboride. At a shock pressure of 1.7 GPa, fracture occurs by the nucleation and splitting of b = [001] dislocation loops in the basal plane. The tensile stress of the shock pulse opens the dislocation loops into microcracks.
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Transmission electron microscopy is used to examine the structure of shock-loaded titanium diboride. At a shock pressure of 1.7 GPa, fracture occurs by the nucleation and splitting of b = [001] dislocation loops in the basal plane. The tensile stress of the shock pulse opens the dislocation loops into microcracks.
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Mechanosynthesis of Nanodispersed Titanium Diboride
Powder Metallurgy and Metal Ceramics, 2015Structural and morphological changes of titanium during intensive milling of titanium and boron powder mixtures in an AIR-015M planetary-ball mill are investigated. It is shown that the structural transformations in titanium lead to the formation of cluster precipitates (like Guinier–Preston zones) of titanium and boron atoms that are regularly ...
M. P. Saviak +5 more
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The oxidation of titanium diboride and zirconium diboride at high temperatures
Journal of the Less Common Metals, 1968Abstract Powdered and compacted TiB2 have been heated in oxygen at pressures of 760–200 mm Hg. The TiB2-O2 reaction rate is parabolic except near 950 °C where it is cubic. The activation energy below 950 °C is 45 kcal/mole and above 950 °C is 31 kcal/mole.
R.J. Irving, I.G. Worsley
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Powder Metallurgy and Metal Ceramics, 1997
The sintering behavior in vacuum of ultrafine nonmilled titanium boride powder and a composite of the latter with CaB6 was investigated. It was shown that such titanium boride powders and TiB2−CaB6 composites poses better sinterability than conventional powders; the temperature of rapid densification was approximately 200°C lower.
T. I. Serebryakova, E. N. Martynenko
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The sintering behavior in vacuum of ultrafine nonmilled titanium boride powder and a composite of the latter with CaB6 was investigated. It was shown that such titanium boride powders and TiB2−CaB6 composites poses better sinterability than conventional powders; the temperature of rapid densification was approximately 200°C lower.
T. I. Serebryakova, E. N. Martynenko
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Microwave sintering of titanium diboride
Journal of Materials Science, 1991Using a 2.45 GHz, 6 kW microwave furnace adapted for inert gas sintering, titanium diboride (TiB2) can be rapidly microwave-sintered to >90% of theoretical density with sintering temperatures of 1900 to 2100 °C and soak times of 30 min or less. Densification behaviour with low-level additives was evaluated; 3 wt% chromium diboride (CrB2) was an ...
C. E. Holcombe, N. L. Dykes
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