In this study, we show from helium (He) plasma irradiation to tantalum and iron surfaces that morphology changes in nanoscale occur on the both metals. In particular, from systematic irradiation experiments, it is identified that fuzzy nanostructures are grown on the both metals. The necessary conditions for the morphology changes are discussed based on the experimental results in terms of the ...

American College of Cardiology; Mar., 1985. “Biological Fate of Tungsten 178 and Tantalum-178”; J. W. Babich et al.; Abstract, SOC. of Nucl. Med.; June.,

A tantalum deposited platinum electrode that offers an enhanced catalytic four-electron reduction of oxygen over the bare platinum electrode in acidic solution is explored.

BACKGROUND Radiostereometric analysis (RSA) is often used for evaluating implanted devices over time. Following patients who have had tantalum beads implanted as markers in conjunction with joint replacements is important for longitudinal evaluation of these patients and for those with similar implants. As doing traditional RSA imaging is exacting and limited to specialized centers, it is impor...

Carbon nanotubes used as fillers in composite materials are more and more appreciated for the outstanding range of accessible properties and functionalities they generate in numerous domains of nanotechnologies. In the framework of biological and medical sciences, and particularly for orthopedic applications and devices (prostheses, implants, surgical instruments, …), titanium substrates covere...

Cylinders made of tantalum (Ta) and tubes 304 stainless steel (304SS) were successfully joined by laser welding under different offsets. The experimental results indicated that satisfactory weld formations obtained. fusion zone (FZ) was found to consist the Fe–Cr solution Fe2Ta phase. In addition, intermetallic compounds (IMCs) layer generated at Ta/FZ interface. When beam offset − 0.2 mm (0.2 ...

Reactions of [TaCp*Cl4] with two, three and four equivalents of LiNH Bu give the haloand amido-imido complexes [TaCp*Cl2(N Bu)] (1a), [TaCp*Cl(NBu)(NHBu)] (2) and [TaCp*(NBu)(NHBu)2] (3), respectively. The related complex [TaCp*Cl2{N(2,6-Me2C6H3)}] (1b) is prepared by a similar reaction using two equivalents of Li[NH(2,6-Me2C6H3)]. Complex 3 can be transformed into 2 and further into 1a by reac...