نتایج جستجو برای: zirconium diboride

تعداد نتایج: 7044  

2017
D. Dandekar D. P. Dandekar

This work compares the estimates of shear strengths of aluminium nitride and titanium diboride obtained (a) from the simultaneous measurements of longitudinal and lateral stress by means of manganin gauges under plane shock wave loading with (b) those calculated from the offset between hydrodynamic and shock Hugoniot of these materials. The results of this work show that whereas the estimates o...

Journal: :Vacuum 2022

Zirconium diboride (ZrB2) films have been deposited by direct current magnetron sputtering (DCMS) from a ZrB2 compound target on Al2O3 (0001) substrates held at 600, 700, 800, and 900 °C, with two different axial magnetic field strengths, 34 104 G, generated using coil surrounding the substrate. Plasma probe measurements show an increase of ion fluxes floating-potential configurations factor 2....

2016
Khrupa Saagar Vijayaragavan SAAGAR VIJAYARAGAVAN Charles Manke

ELECTROLESS DEPOSITION OF SUPERCONDUCTING MAGNESIUM DIBORIDETHIN FILMS ON VARIOUS SUBSTRATES

Journal: :Journal of Physics: Conference Series 2021

Abstract In this article, new composite coatings ZrB 2 -35MoSi -15Al were deposited on the surface of a carbon-carbon using multi-chamber detonation accelerator. The evolution phase composition was analyzed with differential scanning calorimeter (DSC) and X-ray diffractometry (in situ HT-XRD) at temperatures from room temperature (∼ 25°C) to 1400°C (normal atmosphere pressure). coating before a...

2009
Hassel Ledbetter Takaho Tanaka

Using resonance ultrasound spectroscopy, we measured the monocrystal elastic-stiffness coefficients, the Voigt C ij, of TiB2. With hexagonal symmetry, TiB2 exhibits five independent C ij: C 11, C 33, C 44, C 12, C 13. Using Voigt-Reuss-Hill averaging, we converted these monocrystal values to quasiisotropic (polycrystal) elastic stiffnesses. Briefly, we comment on effects of voids. From the C ij...

Journal: :international journal of bio-inorganic hybrid nanomaterials 0

tio2/zro2 nanocomposite was obtained by the sonochemical technique. in this method, two separate gels containing zirconium and titanium were prepared and mixed together. the precursor sol of zirconium was prepared from an aqueous solution of zrcl4. the precursor titanium tetra isopropoxide (ttip) dissolved in isopropanol. mixing of titanium and zirconium gels was resulted in a yellow tio2/zro2 ...

2016
Elisa Sani Elena Landi Diletta Sciti Valentina Medri

Porous ceramic materials are currently used as volumetric sunlight absorbers in concentrating solar power systems. As the efficiency of thermodynamic cycles rapidly increases with the operating temperature, the favorable characteristics of so-called ultra-high temperature ceramics (UHTCs) can be successfully exploited in novel solar absorbers. The present work reports, for the first time to the...

2008

Thanks to the Kroll process, metallic zirconium can be produced by means of a fairly complicated reduction process. In actual fact, the ore is found as a by-product when mining titanium and tin ore. Since 2003, the price of zirconium has more than doubled. This is the result of increasing demand and also the fact that a considerable amount of energy is needed to release zirconium from its chemi...

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