Glass formation in the Cu–Ti–Zr system and its associated binary systems

Somoza, J. A.; Gallego, L. J.; Rey, C.; Fernández, Hernán Mattes; Alonso, J. A.

doi:10.1080/13642819208217915

Cited by 10 publications

(2 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar to Ptbased solid solution counterparts, the Pt 3 Ni−M interface effects were expected to be small for M = Au, Ag, Cu, Rh, and Ni because they have the same crystal structure (fcc) and only small differences in electron distribution at the interface. 19 In contrast, for M = Fe, which has a body-centered-cubic (bcc) structure and a significantly different electron distribution due in large part to its different coordination environment, the deformation induced by the lattice mismatch [bcc(110) vs fcc(111)] at the interface should result in a higher interface energy, 20 which should hamper the recovery growth.…”

mentioning

confidence: 99%

Defect-Dominated Shape Recovery of Nanocrystals: A New Strategy for Trimetallic Catalysts

Wu¹,

Wang²,

Chen³

et al. 2013

J. Am. Chem. Soc.

View full text Add to dashboard Cite

Here we present a shape recovery phenomenon of Pt-Ni bimetallic nanocrystals that is unequivocally attributed to the defect effects. High-resolution electron microscopy revealed the overall process of conversion from concave octahedral Pt3Ni to regular octahedral Pt3Ni@Ni upon Ni deposition. Further experiments and theoretical investigations indicated that the intrinsic defect-dominated growth mechanism allows the site-selective nucleation of a third metal around the defects to achieve the sophisticated design of trimetallic Pt3Ni@M core-shell structures (M = Au, Ag, Cu, Rh). Consideration of geometrical and electronic effects indicated that trimetallic atomic steps in Pt3Ni@M could serve as reactive sites to significantly improve the catalytic performance, and this was corroborated by several model reactions. The synthesis strategy based on our work paves the way for the atomic-level design of trimetallic catalysts.

show abstract

mentioning

confidence: 99%

Defect-Dominated Shape Recovery of Nanocrystals: A New Strategy for Trimetallic Catalysts

Wu¹,

Wang²,

Chen³

et al. 2013

J. Am. Chem. Soc.

View full text Add to dashboard Cite

show abstract

“…6 For theoretical discussion of the crystallization of Ni 80 B 20 glass, we have constructed the free-energy diagram of the Ni-B system using the semiempirical model developed by Miedema and co-workers 7,8 and López, Alonso, and Gallego. 9 This approach is a combination of classical elasticity theory 10 and Miedema's model for the heat of formation of alloys, 11 and has successfully been used to predict the glass formation ranges of binary 7-9,12-15 and ternary 16,17 transition-metal alloys, and of binary alloys composed of a transition metal and a nontransition element. 18 The advantage of this treatment lies in its explicit use of the factors that have been recognized empirically as being most closely correlated with glass forming ability: valence, electronegativity, crystal structure, and atomic size mismatch.…”

mentioning

confidence: 99%

Theoretical study of the devitrification of the metallic glassNi80B20

Somoza

Gallego

2000

Phys. Rev. B

Self Cite

View full text Add to dashboard Cite

The devitrification of Ni 80 B 20 metallic glass has recently been investigated experimentally by two different groups with contradictory results. Rojo et al. interpret their data as showing that devitrification occurs in two successive processes separated by a state in which pure amorphous Ni is present. By contrast, Riveiro et al. have suggested that the ''intermediate'' state consists of two crystalline phases. Using a semiempirical treatment which combines classical elasticity theory and Miedema's model for the heat of formation of alloys, we have constructed the free energy diagram for Ni-B. We found that it supports Riveiro et al.'s account of the devitrification of Ni 80 B 20 glass rather than Rojo et al.'s.

show abstract

Study of phonon eigenfrequencies in ternary transition metal‐metalloid Fe₄₀Ni₄₀B₂₀ glass

Gupta

Bhandari

Jain

et al. 1996

Physica Status Solidi (b)

View full text Add to dashboard Cite

The study of the ternary Fe40Ni40B20 metal-metalloid glass has been made through a partial pair-potential approach. Six partial pair potcntials of this ternary glass have been computed using pseudopotential-based interatomic forces. In particular, the model employed here for the calculation of the potential is in analogy with the three-partial-structure-factor approach of Sietsma and Thijsse with the assumptions that Fe and Ni atoms have identical distributions with respect to like neighbours and hence the partial pair potentials of Fe-B and Ni-B are identical. The calculated effective pair potential using the partial pair potentials is then ernployed to investigate the longitudinal and transverse phonon eigenfrequencies. Further, from the elastic part of the frequency spectrum, elastic and thermal properties have been computed. The computed results for these properties are found to be in good agreement with the available cxperiment a1 results .

show abstract

Glass formation in the Cu–Ti–Zr system and its associated binary systems

Cited by 10 publications

References 35 publications

Defect-Dominated Shape Recovery of Nanocrystals: A New Strategy for Trimetallic Catalysts

Defect-Dominated Shape Recovery of Nanocrystals: A New Strategy for Trimetallic Catalysts

Theoretical study of the devitrification of the metallic glassNi80B20

Study of phonon eigenfrequencies in ternary transition metal‐metalloid Fe₄₀Ni₄₀B₂₀ glass

Contact Info

Product

Resources

About

Glass formation in the Cu–Ti–Zr system and its associated binary systems

Cited by 10 publications

References 35 publications

Defect-Dominated Shape Recovery of Nanocrystals: A New Strategy for Trimetallic Catalysts

Defect-Dominated Shape Recovery of Nanocrystals: A New Strategy for Trimetallic Catalysts

Theoretical study of the devitrification of the metallic glassNi80B20

Study of phonon eigenfrequencies in ternary transition metal‐metalloid Fe40Ni40B20 glass

Contact Info

Product

Resources

About

Study of phonon eigenfrequencies in ternary transition metal‐metalloid Fe₄₀Ni₄₀B₂₀ glass