Results 221 to 230 of about 186,704 (266)

Enhanced irradiation resistance of amorphous alloys by introducing amorphous/amorphous interfaces

Intermetallics, 2019
Abstract To clarify the effect of amorphous/amorphous (A/A) interfaces during ion irradiation, the He ion irradiation responses of ZrCu/ZrCuNiAlSi A/A nanolaminates (A/ANLs) as well as ZrCu and ZrCuNiAlSi single-layered amorphous thin films were examined.
L. Huang, Z.Q. Chen, W.B. Liu, P. Huang, X.K. Meng, K.W. Xu, F. Wang, T.J. Lu   +7 more
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AMORPHOUS WATER

Annual Review of Physical Chemistry, 2004
▪ Abstract  After providing some background material to establish the interest content of this subject, we summarize the many different ways in which water can be prepared in the amorphous state, making clear that there seems to be more than one distinct amorphous state to be considered.
openaire   +2 more sources

Amorphous boron and amorphous-like borides

Journal of Non-Crystalline Solids, 1986
Investigations of the electrical and optical properties and thermal conductivity of a number of MB66 compounds have been carried out (M = Gd, Sm, Yb, Dy, Y). Their properties were compared with the properties of amorphous boron. Amorphous boron and MB66 compounds were shown to be materials-analogs due to the specific complex lattice of MB66 ...
O.A. Golikova, A. Tadzhiev
openaire   +1 more source

Trehalose amorphization and recrystallization

Carbohydrate Research, 2008
The stability of the amorphous trehalose prepared by using several procedures is presented and discussed. Amorphization is shown to occur by melting (T(m)=215 degrees C) or milling (room temperature) the crystalline anhydrous form TRE-beta. Fast dehydration of the di-hydrate crystalline polymorph, TRE-h, also produces an amorphous phase.
CESARO, ATTILIO, SUSSICH F.
openaire   +3 more sources

On the nature of amorphous-to-amorphous and crystal-to-amorphous transitions under high pressure

Journal of Non-Crystalline Solids, 1997
Abstract A number of experimental methods have been applied to study the kinetics of high-pressure solid-state amorphization for some covalent crystals (Si, Ge and GaSb), molecular crystals, C60 and ionic oxides (stishovite and H2O), as well as the amorphous-to-amorphous transitions for H2O and GeO2.
V.V. Brazhkin, A.G. Lyapin, O.V. Stalgorova, E.L. Gromnitskaya, S.V. Popova, O.B. Tsiok   +5 more
openaire   +1 more source

First-Order Amorphous-Amorphous Transformation in Silica

Physical Review Letters, 2000
Molecular simulations predict that a first-order amorphous-amorphous transformation occurs in SiO2 under pressure, analogous to the first-order amorphous-amorphous transformation known to occur in H2O. At low temperatures the first-order transformation is kinetically hindered, and an amorphous-amorphous transformation occurs instead by gradual spinodal
openaire   +2 more sources

Structure of amorphous metallic alloys and the conditions of amorphization

Metal Science and Heat Treatment, 2000
The results of x-ray study of amorphous metal alloys are compared with the structural parameters of intermediate phases determined for equilibrium state diagrams and primary products of crystallization upon warming of amorphous alloys and crystal phases (formed at “subcritical” cooling rates) of the alloys susceptible to amorphization. It is found that
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Is simulated ‘‘amorphous’’ silica really amorphous?

AIP Conference Proceedings, 1994
We have carried out extensive molecular dynamics simulations for the pressure induced amorphization of quartz by means of a classical force‐field model. In agreement with earlier simulations, we find that a phase transition occurs within the experimental pressure range of the amorphization.
N. Binggeli, James R. Chelikowsky
openaire   +1 more source

Amorphous-to-amorphous phase transition in zeolites

JETP Letters, 2006
A transition between two amorphous phases with different densities has been detected in zeolites at high pressures using Raman scattering. The Raman spectra measured at amorphous-to-amorphous phase transitions in zeolites and silicon are almost identical; this fact suggests a common nature of these transitions in both single-and multicomponent ...
N. N. Ovsyuk, S. V. Goryaĭnov
openaire   +1 more source

Micromechanical response for the amorphous/amorphous nanolaminates

Intermetallics, 2010
Abstract The uniaxial microcompression and nanoindentation responses of amorphous-ZrCuTi/amorphous-PdCuSi nanolaminates were investigated. It was found that the apparent deformation mechanism transforms from highly inhomogeneous mode in the monolithic amorphous alloys to relatively more homogeneous mode in the micropillars of nanolaminates.
S.Y. Kuan, H.S. Chou, M.C. Liu, X.H. Du, J.C. Huang   +4 more
openaire   +1 more source