The study discusses the microstructure and mechanical properties of eight tested 0.3 % C -30 % Ni 18 % Cr cast steels stabilized with niobium and titanium after annealing in the cycle of 900 °C / 300 h. The niobium content in the cast steels varied from 0.0 to 2.0 % and that of titanium from 0.0 to 1.2 % by weight. Microstructure was examined using both light microscope and a scanning electron ...

Niobium and tantalum carbide clusters have been isolated in the gas phase and irradiated with intense tunable infrared (IR) light. Stable neutral clusters are selectively ionized and subsequently detected in a mass spectrometer. By tuning the IR frequency, infrared multiphoton absorption spectra are obtained for a whole range of clusters. These mass-selective IR spectra lead to insights into th...

Crystals of niobium and its alloys obtained by low-energy implantation molybdenum zirconium ions were studied in a multi-functional installation. The energy distribution curves N (E) photoelectrons before after heating – studied. contribution surface zones formed atoms to photoelectron emission the photon region 8–10 eV was analyzed.

In this work the n-GaN(1000) surface is used as a source of nitrogen atoms in order to obtain niobium nitride film by surface-mediated nitridation technique. To end, physical vapor deposition on GaN followed sample annealing at 1123 K. A thermally induced decomposition and interfacial mixing phenomena lead formation compound, which contains Nb from thin N substrate. The processes allowed obtain...

Surface microsurgery is the science of preparing surface layers, such as oxide scales and coatings, for characterisation of their microstructure and composition, by conventional surface analytical techniques, such as SEM, EPMA, SIMS etc. A surface microsurgery procedure often employed involves the preparation of a taper section. Using relatively simple equipment, significant improvements have b...

A novel high-temperature synthesis of niobium oxide nanostructures has been developed through an amorphous intermediate that crystallizes into anisotropic crystalline structures through a complex mechanism of nucleation-dissolution-selective growth induced by seeded growth. The amorphous materials formed by the thermolysis of niobium oleate transformed into crystalline platelets, wires or bundl...

This Article is brought to you for free and open access by the Physics at ODU Digital Commons. It has been accepted for inclusion in Physics Faculty Publications by an authorized administrator of ODU Digital Commons. For more information, please contact [email protected]. Repository Citation Ciovati, Gianluigi and Kneisel, Peter, "Measurement of the High-Field Q Drop in the TM010 and TE011...

components for the reconstruction of the acetabulum and metal femoral head components for conventional THA and RHA. The ACCIS®metal components are made of a chrome-cobalt-molybdenum alloy, but are different from other metal-on-metal prostheses. The surfaces of the metal components are engineered with the ceramic Titanium-Niobium-Nitride (TiNbN) in order to minimize metal particulate wear, to pr...

To evaluate innate effects of certain trace elements, 540 mice were fed a diet of rye, corn oil and dried skim milk containing moderate amounts of zirconium and niobium and no detectable antimony or fluorine, in an environment relatively free of trace contaminants. Groups of 108, divided as to sex, were given 5 ppm zirconium, niobate or antimony or 10 ppm fluoride in drinking water from weaning...