Results 281 to 290 of about 61,570 (313)

An Al13Fe4 phase in the AlCuFe alloy system

Journal of Alloys and Compounds, 1994
The Cu-containing Al13Fe4 phase was studied by X-ray diffractometry, electron microscopy and thermal analysis. The increase in the Cu concentration results in a decrease in the melting temperature. No structural variations were observed in this compound up to a limiting Cu concentration of about 6 at.%. The increase in the Cu content is realized by the
C. Freiburg, B. Grushko
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Characteristic properties of Cu–Fe alloys as spin glasses

Soviet Journal of Low Temperature Physics, 1980
The electrical resistivity and Hall effect of nontypical “spin glasses” namely copper–iron alloys, have been investigated in the temperature range 4.2−77.3 °K. Low-temperature maxima in the resistivity and the Hall emf have been observed, which is typical of a system with strong interimpurity interactions.
A. V. Vedyaev, V. A. Cherenkov
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Activity of Arsenic in Liquid Cu–Fe Base Alloys

Monatshefte für Chemie - Chemical Monthly, 2005
The activity of arsenic in liquid Cu–Fe base alloys was determined by isopiestic and Knudsen cell-mass spectrometer methods. Based on the activity data, the volatilization of arsenic in the extraction and recycling of copper was thermodynamically evaluated.
Kimio Itagaki, Dexter G. Mendoza, Leandro Voisin, Mitsuhisa Hino   +3 more
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Mechanical Milling of Quasicrystalline Al-Cu-Fe Alloys

Materials Science Forum, 2014
Ingots of alloys Al-Cu-Fe were obtained by casting in a graphite mold. Mechanical milling of alloy particles in the as-cast state and after homogenization annealing was carried out in planetary ball mill Retsch PM400 in an argon atmosphere. As a result of mechanical milling granules with an average size of 35-40 μm and fine internal microstructure are ...
Pavel Bryantsev, Marina Samoshina
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Self- and Interdiffusion in Ternary Cu-Fe-Ni Alloys

Defect and Diffusion Forum, 2005
Diffusion of Cu, Fe, and Ni radiotracers has been measured in Cu–Fe–Ni alloys of different compositions at 1271 K. The measured penetration profiles reveal grain boundary-induced part along with the volume diffusion one. Correction on grain boundary diffusion was taken into account when determining the volume diffusivities of the components.
Sergiy V. Divinski, Frank Hisker, Christian Herzig, Robert Filipek, Marek Danielewski   +4 more
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Spin glass of liquid-quenched Cu-Fe alloys

Journal of Magnetism and Magnetic Materials, 1986
Abstract The spin glass state of the liquid-quenched Cu-Fe alloys up to 9% Fe with fcc structure has been investigated by means of magnetic susceptibility, electrical resistivity and Mossbauer spectrum measurements. Change of the spin glass nature by annealing was observed and the clustering effect of Fe atoms was made clear.
K. Adachi, T. Uchiyama, M. Matsui, M. Doi, T. Miyazaki   +4 more
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Antiphase domains in icosahedral Al‐Cu‐Fe alloy

Philosophical Magazine B, 1989
Abstract Electron microscopy observations of the newly discovered icosahedral phase in the Al‐Cu‐Fe ternary system show a domain structure as expected from a group‐subgroup formal decomposition from a primitive six-dimensional (6D) hypercubic unit cell to a face‐centred one with twice the lattice parameter, as suggested by Ebalard and Spaepen.
Jacqueline Devaud Rzepski, Annick Quivy, Yvonne Calvayrac, Marianne Corner-Quiquandon, Denis Gratias   +4 more
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The surface tension of liquid Cu–Fe–Sb alloys

Applied Surface Science, 2010
Abstract The results of study on the influence of temperature and iron and antimony on the surface tension of liquid ternary Cu–Fe–Sb systems are presented. The measurements were carried out with the sessile drop method, in a broad range of the alloy additions concentration (Fe and Sb).
Joanna Willner, Grzegorz Siwiec, Jan Botor   +2 more
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Nucleation of Al-Cu-Fe alloy in a drop tube

Journal of Applied Physics, 1994
The undercooling and nucleation of an Al65Cu20Fe15 alloy have been investigated with a 1.2-m-long drop tube. Melted droplets solidified either in vacuum or in helium. Various size samples in the forms of a globule, a fine fiber, and an irregular splat were collected at the bottom of the tube.
F. X. Zhang, R. C. Yu, W. K. Wang
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Deformation Characteristics of Quasicrystalline Al–Cu–Fe Alloys

Journal of Materials Research, 1997
The deformation characteristics of icosahedral Al–Cu–Fe quasicrystals were determined by high temperature creep experiments between 680 and 720 °C and 15 and 41 MPa. The deformation process was determined to be controlled by grain boundary mechanisms.
J. E. Shield, M. J. Kramer
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