221 research outputs found
Calculation of the P-T phase diagram and tendency toward decomposition in equiatomic TiZr alloy
Electronic, structural and thermodynamic properties of the equiatomic alloy
TiZr are calculated within the electron density functional theory and the
Debye-Gruneisen model. The calculated values of the lattice parameters a and
c/a agree well with the experimental data for the alpha, omega and beta phases.
The omega phase is shown to be stable at atmospheric pressure and low
temperatures; it remains energetically preferable up to T=600K. The alpha phase
of the TiZr alloy becomes stable in the range 600K<T<900K, and the beta phase
at temperatures above 900K. The constructed phase diagram qualitatively agrees
with the experimental data available. The tendency toward decomposition in the
equiatomic alloy omega-TiZr is studied. It is shown that in the ground state
the omega phase of the ordered equiatomic alloy TiZr has a tendency toward
ordering, rather than decomposition.Comment: 6 pages, 8 figure
Coherent lidars based on intracavity heterodyning of echo signals
The development and technical realization of the method of laser sounding of the atmosphere based on the effects of mixing of reference and external fields of scattering inside a laser cavity are presented. An approximate theory of the method was developed on the basis of the investigations using the model of a three-mirror laser. The nonlinear effect of a wideband laser on frequency-dependent external influences of the atmosphere was investigated. The field measurements of gaseous composition of the atmosphere were performed on the basis of a given method of coherent reception using a tunable CO2 laser
Finding false paths for sequential circuits using operations on ROBDDs
Performance of VLSI is, first of all, its high operatio
Detection and masking of Trojan Circuits in sequential logic
A technique of finding a set of sequential circui
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