نتایج جستجو برای: tantalum carbide

تعداد نتایج: 11841  

2010
Uttam K. Bhattarai Kshitij Shrestha

A review of different articles related to artificial ripening was done. Focus was given on the hazards and applications of calcium carbide for artificial ripening, being a very common practice in Nepalese Market. Litterateurs showed many hazardous aspects of carbide use and also standard procedures of safety handling aspects. But being banned by regulation, due to its hazardous aspects and lack...

1998
David A. Evans

The electrical performance of Hybrid capacitors (US Patent 5,369,547) using high capacitance density electrochemical capacitor cathodes, electrolytic capacitor anodes and dielectric, and compatible electrolytes is strongly influenced by the nature of the electrolyte employed and the physical characteristics of the electrodes. Management of overall capacitor performance usually involves optimizi...

2016
Vito Šimonka Georg Nawratil Andreas Hössinger Josef Weinbub Siegfried Selberherr Viktor Sverdlov

We investigate anisotropical and geometrical aspects of hexagonal structures of Silicon Carbide and propose a direction dependent interpolation method for oxidation growth rates. We compute threedimensional oxidation rates and perform one-, two-, and three-dimensional simulations for 4Hand 6H-Silicon Carbide thermal oxidation. The rates of oxidation are computed according to the four known grow...

Journal: :Chemical communications 2005
Qingmin Ji Toshimi Shimizu

An iced lipid nanotube has been employed as a template to perform sol-gel transcription of transition metal alkoxides in the absence of solution catalysts, giving titania, tantalum oxide and vanadium oxide nanotubes in aqueous dispersions.

Journal: :Physical review letters 2008
A Barty S Marchesini H N Chapman C Cui M R Howells D A Shapiro A M Minor J C H Spence U Weierstall J Ilavsky A Noy S P Hau-Riege A B Artyukhin T Baumann T Willey J Stolken T van Buuren J H Kinney

Ultralow density polymers, metals, and ceramic nanofoams are valued for their high strength-to-weight ratio, high surface area, and insulating properties ascribed to their structural geometry. We obtain the labrynthine internal structure of a tantalum oxide nanofoam by x-ray diffractive imaging. Finite-element analysis from the structure reveals mechanical properties consistent with bulk sample...

Journal: :Journal of orthopaedic surgery 2012
Yi Yan Qiu Chun Hoi Yan Kwong Yuen Chiu Fu Yuen Ng

Bone deficiency hinders implant alignment and stabilisation of the bone-implant interface in revision total knee arthroplasty (TKA). Treatments for bone defects include bone cement, bone cement with screw reinforcement, metal augments, impaction bone grafts, structural allografts, and tantalum, depending on the location and size of the defects. Small defects are usually treated with cement, cem...

2003
F. Lanza G. Bertolini

Previous experiments have shown that tritium is produced in deuterated titanium. To better define the phenomenon a series of tests have been performed using various metals and alloys and different deuterating conditions. Sheets and shavings of titanium, zirconium, hafnium, tantalum, Zircaloy 2 and Ti-Zr 50% alloy have been tested. A statistical analysis of the tritium production shows that sign...

2009
T. J. Williams

The axial distribution of energy deposited in bremsstrahlung conversion targets is modelled using the Monte Carlo N -Particle (MCNP) code. Systems comprising a disc-shaped target, segmented axially, and a point source of paraxial, monoenergetic electrons (2, 7, 10, or 14 MeV) are considered. Thick tantalum and aluminium targets and also tantalum targets of optimum thickness are modelled. Energy...

2017
Shireen Adenwalla P. Welsch Jennifer I. Brand A. Sezer Brian W. Robertson S. Adenwalla B. W. Robertson

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