A quantitative interpretation of the surface segregation in air-exposed intermetallic compounds. A test case UNiAl

I. Jacob; M. Fisher; Z. Hadari

doi:10.1016/0038-1098(84)91053-6

A quantitative interpretation of the surface segregation in air-exposed intermetallic compounds. A test case UNiAl

I. Jacob, M. Fisher, Z. Hadari

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3 Scopus citations

Abstract

The first quantitative interpretation of the surface segregation in an air-exposed intermetallic compound, namely UNiAl, has been proposed. The analysis of the experimental data indicates that the driving force for the segregation is associated with the surface free energy of the pure metal constituents of the intermetallic compound. The slope of the surface abundance vs surface energy curve differs by approximately a factor of 8 from the slope predicted by a Boltsmann-type distribution function. The same slope is also derived by analyzing the segregation properties of Zr, Cr and Mn in ZrCr₂ and ZrMn₂, previously studied by other investigators.

Original language	English
Pages (from-to)	1161-1164
Number of pages	4
Journal	Solid State Communications
Volume	49
Issue number	12
DOIs	https://doi.org/10.1016/0038-1098(84)91053-6
State	Published - 1 Jan 1984
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
Materials Chemistry

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10.1016/0038-1098(84)91053-6

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abstract = "The first quantitative interpretation of the surface segregation in an air-exposed intermetallic compound, namely UNiAl, has been proposed. The analysis of the experimental data indicates that the driving force for the segregation is associated with the surface free energy of the pure metal constituents of the intermetallic compound. The slope of the surface abundance vs surface energy curve differs by approximately a factor of 8 from the slope predicted by a Boltsmann-type distribution function. The same slope is also derived by analyzing the segregation properties of Zr, Cr and Mn in ZrCr2 and ZrMn2, previously studied by other investigators.",

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AU - Fisher, M.

AU - Hadari, Z.

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N2 - The first quantitative interpretation of the surface segregation in an air-exposed intermetallic compound, namely UNiAl, has been proposed. The analysis of the experimental data indicates that the driving force for the segregation is associated with the surface free energy of the pure metal constituents of the intermetallic compound. The slope of the surface abundance vs surface energy curve differs by approximately a factor of 8 from the slope predicted by a Boltsmann-type distribution function. The same slope is also derived by analyzing the segregation properties of Zr, Cr and Mn in ZrCr2 and ZrMn2, previously studied by other investigators.

AB - The first quantitative interpretation of the surface segregation in an air-exposed intermetallic compound, namely UNiAl, has been proposed. The analysis of the experimental data indicates that the driving force for the segregation is associated with the surface free energy of the pure metal constituents of the intermetallic compound. The slope of the surface abundance vs surface energy curve differs by approximately a factor of 8 from the slope predicted by a Boltsmann-type distribution function. The same slope is also derived by analyzing the segregation properties of Zr, Cr and Mn in ZrCr2 and ZrMn2, previously studied by other investigators.

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A quantitative interpretation of the surface segregation in air-exposed intermetallic compounds. A test case UNiAl

Abstract

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