In this paper, static and dynamic behavior of a varactor of a micro-phase shifter under DC, step DC and AC voltages and effects of the residual stress on the phase diagram have been studied. By presenting a mathematical modeling, Galerkin-based step by step linearization method (SSLM) and Galerkin-based reduced order model have been used to solve the governing static and dynamic equations, resp...

In this article, we present a comprehensive theoretical study of solubilities of alkali Li, Na, K, Rb, Cs and alkaline-earth Be, Ca, Sr, Ba metals in the boron-rich Mg-B system. The study is based on first-principles calculations of solutes formation energies in MgB2, MgB4, MgB7 alloys and subsequent statisticalthermodynamical evaluation of solubilities. The advantage of the approach consists i...

We present a phenomenological theory for the phase behavior of ternary mixtures of cholesterol and saturated and unsaturated lipids, one that describes both liquid and gel phases. It leads to the following description of the mechanism of the phase behavior: In a binary system of the lipids, phase separation occurs when the saturated chains are well ordered, as in the gel phase, simply due to pa...

The research analyses the controversies surrounding technique for formation of a CaO-Al2O3 binary system and nature melting compounds in it, i.e. whether 12:7 compound is technically possible 1:1 1:2 are congruently or incongruently compounds. It also discusses CaO-MgO-Al2O3 ternary following can be formed: 3:1:1 alone or, addition to two more 1:2:8 2:2:14. A 3D model T-x-y diagram was created ...

Interface reactions in composite systems often determine their overall properties, since product phases usually formed at interfaces during composite fabrication processing make up a large portion of the composites. Since most composite materials represent a ternary or higher order materials system, many studies have focused on analyses of diffusion phenomena and kinetics in multicomponent syst...

The interaction of the components in Hf–Re–Al system was investigated by X-ray powder diffraction and scanning electron microscopy with energy-dispersive spectroscopy. isothermal section phase diagram at 1000 °C constructed full concentration range. A new ternary compound ~Hf5Re2Al2, isostructural Ti5Ga4 (hP18, P63/mcm), two extended solid solutions Hf(Re,Al)2 were found.