Multi-physical characterization of cellular ceramics for high-temperature applications
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Poly-quasicrystalline samples of an icosahedral Al-Cu-Fe alloy have been deformed in compression tests under constant-strain-rate conditions at temperatures ranging from room temperature up to 1020 K (m approximate to 1150 K, where T-m is the melting tempe ...
Dislocation dynamics in a Ni-3(Al, Ta) single-crystal alloy have been studied by means of mechanical spectroscopy at intermediate temperatures, that is in the temperature range of the flow stress anomaly. The mechanical loss of specimens predeformed at 300 ...
Raman spectra of hexagonal close-packed iron (epsilon-Fe) have been measured from 15 to 152 gigapascals by using diamond-anvil cells with ultrapure synthetic diamond anvils. The results give a Gruneisen parameter gamma(o) = 1.68 (+/-0.20) and q = 0.7 (+/-0 ...
The single-crystal elastic moduli of alpha-quartz were measured to above 20 GPa in a diamond-anvil cell by Brillouin spectroscopy. The behavior of the elastic moduli indicates that the high-pressure phase transition in quartz is ferroelastic in nature and ...
In this work, in order to improve mechanical stability of pseudomorphic HEMTs (PMHEMTs), we propose a pseudomorphic InAlAs/InGaAs/InP structure where the channel and the spacer are strain compensated: as in the conventional structure, the InGaAs channel is ...
The combustion (oxidn.) is studied of anthracene and xanthone in a lab. scale incineration reactor illuminated with beams from a KrF- and XeCl-excimer laser at 248 and 308 nm. The destruction and removal efficiency of this photon-assisted process is substa ...
We propose a new, simple way of constructing elastic tubes which can be used to model the nonlinear elastic properties of large arteries. The tube models are constructed from a silicon elastomer (Sylgard 184, Dow Corning), which exhibits a nonlinear behavi ...