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Amorphization Mechanism of Icosahedral Metal Nanoclusters
Physical Review Letters, 2004The amorphization mechanism of icosahedral Pt nanoclusters is investigated by a combination of molecular dynamics simulations and density functional calculations. A general mechanism for amorphization, involving rosettelike structural transformations at fivefold vertices, is proposed.
Apra E. +3 more
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Structure of amorphous metallic alloys and the conditions of amorphization
Metal Science and Heat Treatment, 2000The 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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CORROSION 1983, 1983
Abstract Five commercial amorphous alloys were investigated for their corrosion characteristics in a variety of electrolytes covering a range of pH levels from 0.3 to 8.5. Anodic polarization data were correlated with Auger Electron Spectroscopy (AES) surface analyses in an attempt to characterize the corrosion processes.
Robert L. Chance, Ronald G. Ceselli
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Abstract Five commercial amorphous alloys were investigated for their corrosion characteristics in a variety of electrolytes covering a range of pH levels from 0.3 to 8.5. Anodic polarization data were correlated with Auger Electron Spectroscopy (AES) surface analyses in an attempt to characterize the corrosion processes.
Robert L. Chance, Ronald G. Ceselli
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Hybridization in amorphous metals
Philosophical Magazine B, 1983Abstract We have investigated the effects of s-d hybridization on the electronics states in amorphous or liquid transition metals. First, using computer simulations and a tight-binding model we have compared the effects of hybridization on the density of states in the amorphous and crystalline states. Somewhat surprisingly we find that the densities of
G. F. Weir +3 more
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Magnetomechanical Properties of Amorphous Metals
physica status solidi (a), 1982Amorphous metals have magnetomechanical properties superior to those of crystalline magnetostrictive materials, and are therefore being considered for a variety of transducer and sensor applications. A simplified model is presented of magnetomechanical coupling in amorphous metal ribbons, showing the relation between magnetomechanical behavior and ...
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Magnetism in amorphous transition metals
Physical Review B, 1991Overall features of magnetism in amorphous transition metals have been investigated on the basis of a finite-temperature theory of the local-environment effect. It is shown that the simple ferromagnetism of Fe, Co, and Ni is drastically changed by structural disorder; amorphous transition metals form spin glasses (SG's) for compositions near amorphous ...
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Scripta Materialia, 2006
As recently demonstrated, amorphous metal foams are highly ductile in compression, and thus offer attractive compromises in mechanical and physical properties between crystalline metallic and ceramic foams. Challenges associated with fabrication of amorphous metal foams are critically assessed in the context of current and future processing methods ...
A.H. Brothers, D.C. Dunand
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As recently demonstrated, amorphous metal foams are highly ductile in compression, and thus offer attractive compromises in mechanical and physical properties between crystalline metallic and ceramic foams. Challenges associated with fabrication of amorphous metal foams are critically assessed in the context of current and future processing methods ...
A.H. Brothers, D.C. Dunand
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Laserschweißen amorpher Metalle
1992Amorphe Metalle besitzen gegenuber herkommlichen Metallen erhohte Zugfestigkeiten und Duktilitat, verbesserte magnetische Eigenschaften und hohe Korrosionsbestandigkeit. Aufgrund der Herstellbedingungen (hohe Abkuhlgeschwindigkeit) sind amorphe Metalle nur in bestimmten Formen (meist als Folie, Draht oder Pulver) erhaltlich.
L. Dorn, H. Grutzeck, S. Jafari
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Uspekhi Fizicheskih Nauk, 1990
The experimental data on the structure of and the structural defects and structural relaxation in amorphous metallic alloys are reviewed. The elastic and inelastic properties of amorphous metallic alloys and the effect of disorder in the arrangement of atoms on the ferromagnetic properties of amorphous metallic alloys are also studied.
I V Zolotukhin, Yu E Kalinin
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The experimental data on the structure of and the structural defects and structural relaxation in amorphous metallic alloys are reviewed. The elastic and inelastic properties of amorphous metallic alloys and the effect of disorder in the arrangement of atoms on the ferromagnetic properties of amorphous metallic alloys are also studied.
I V Zolotukhin, Yu E Kalinin
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2020
In the last 20 years, the research on amorphous metal alloys has led to the development of materials with selective hydrogen permeabilities that are comparable or even higher than those of palladium and palladium alloys. The most promising materials are composed of Ni, Nb, Zr, with the possible addition of Ta or Ti. The operating temperatures are found
Paolone A, Chandra D
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In the last 20 years, the research on amorphous metal alloys has led to the development of materials with selective hydrogen permeabilities that are comparable or even higher than those of palladium and palladium alloys. The most promising materials are composed of Ni, Nb, Zr, with the possible addition of Ta or Ti. The operating temperatures are found
Paolone A, Chandra D
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