In this study, based on designed Ti-50Ni, Ti-27Ni-23Nb, and Ti-27Ni-19Nb-4X (Ta V) SMAs were prepared using arc melting. The microhardness microstructure of the alloys examined. optical microscope (OM) Scanning Electron Microscopy (SEM) images can be noted that Nb, Ta, V addition in substitution to nickel causes a change morphology TiNi Shape Memory Alloy at room temperature. results shown when...

In tro duc tion: Tour niquet due ve nous sta sis can al ter bo th con cen tra tion and/or ac ti vi ty of se ve ral blood ana lytes, but is ra re ly re gar ded as an is sue of la bo ra to ry va ria bi li ty. To over co me the prob lem tran sil lu mi na tion de vi ces (TD) ha ve been pro po sed for a sta si s-free phle bo to my. In this pa per the use of a TD in pla ce of tour niquet du ri ng blo...

Aerosols were monitored in Greater Copenhagen in the period June 1973 to July 1974. Size-fractionated cascade impactor samples and unfractionated filter samples were regularly collected and analyzed by neutron activation analysis, spark emission spectroscopy or proton-induced X-ray emission spectroscopy. Concentrations were determined of the following elements: Al, Si, S, Cl, K, Ca, Ti, V, Cr, ...

The fatigue strength, effects of a notch on the fatigue strength, and fatigue crack growth rate of Ti-15Zr-4Nb-4Ta alloy were compared with those of other implantable metals. Zr, Nb, and Ta are important alloying elements for Ti alloys for attaining superior long-term corrosion resistance and biocompatibility. The highly biocompatible Ti-15Zr-4Nb-4Ta alloy exhibited an excellent balance between...

An elemental powder sintering (EPS) technique has been developed for the synthesis of porous NiTi alloy, in which Ni and Ti powders are used as the reactants and TiH2 powder is added as a pore-forming agent and active agent. Effects of various experimental parameters (sintering temperature, sintering time, and TiH2 content) on the porosity, pore size and pore distribution as well as phase compo...

The parallel nano-scanning calorimeter (PnSC) is a silicon-based micromachined device for calorimetric measurement of nanoscale materials in a high-throughput methodology. The device contains an array of nanocalorimeters. Each nanocalorimeter consists of a silicon nitride membrane and a tungsten heating element that also serves as a temperature gauge. The small mass of the individual nanocalori...

The purpose of this article is to introduce a simple appliance that uses a setup model and a nickel-titanium (Ni-Ti) wire for correcting the mesial rotation and drift of the permanent maxillary first molar. The technique involves bonding a Ni-Ti wire to the proper position of the target tooth on a setup model, followed by the fabrication of the transfer cap for indirect bonding and its transfer...

This study investigates the axisymmetric plasma flow field near a fixed-potential surface, representing the conditions near a Faraday cup. A hybrid computational code simulates electrons with a fluid model using the Boltzmann relation, and heavy particles with a Particle In Cell method. The planar Bohm sheath solution is recovered accurately for plasma conditions ni = 1.1×10 m, Ti = 300 K, Te =...

The influence of nickel on the structure and properties Ti-Cr-N ion-plasma coatings obtained by arc-PVD method has been studied. With a content up to 11.9 at. %, coating consists Cr 2 N, Ti1 – x metallic Ni. Upon further increase in Ni concentration coating, intermetallic compound Ni3Ti is formed. was studied using transmission electron microscopy. system are characterized columnar structure, c...