Segregation of Sn and Sb in a ternary Cu(100)SnSb alloy

Asante, J. K. O.; Terblans, J.J.; Roos, W.

doi:10.1016/j.apsusc.2005.03.232

Cited by 11 publications

(6 citation statements)

References 14 publications

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“…It is to be expected that D 0 and E for Sn will be different from that for Sb. 13 The Sn profile reaches a maximum fractional coverage of 0.12 at the temperature line B. Beyond B, Sn desegregates into the bulk because of repulsive interactions between Sn and Sb atoms and a lower segregation energy of Sn.…”

Section: Resultsmentioning

confidence: 99%

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Segregation of Sn in the binary CuSn and ternary CuSnSb alloy systems

Asante

Terblans

Roos

2006

Surf. Interface Anal.

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Progression studies have been followed from Cu(111)-and Cu(100)Sn binaries to Cu(111)-and Cu(100)SnSb ternary-alloy systems under the same experimental conditions. The segregation behaviour of Sn in the two orientations are explained. It is found that the kinetic segregation profiles of Sn in the ternary alloys shift to lower temperatures as compared to that in the binary. The Sn profile shift is mainly due to the decrease in the activation energy of Sn in the ternary systems. For a particular Cu orientation, the other segregation parameters that the Sn profiles depend on, like the pre-exponential factor, segregation energy and the interaction coefficient, are found to be the same in the two systems. There is also a change in the equilibrium segregation profiles of Sn. In the ternary system, site competition between Sn and Sb causes the Sn to suffer exponential desegregation and eventual displacement from the surface.

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Section: Resultsmentioning

confidence: 99%

“…The other experimental conditions are all given in Ref. 13. Figure 1 shows the measured profiles of Sn in Cu(100)Sn binary alloy at a sample heating rate of 0.075 K/s.…”

Section: Methodsmentioning

confidence: 99%

Segregation of Sn in the binary CuSn and ternary CuSnSb alloy systems

Asante

Terblans

Roos

2006

Surf. Interface Anal.

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“…It is reported that the diffusion rate of tin is higher than that of antimony due to the different activation energy of the atoms, but the segregation energy of antimony is higher than tin resulting in a repulsive interaction with tin atoms. This eventually leads to interstitial diffusion of antimony into tin with the displacement of the tin atoms 31…”

Section: Resultsmentioning

confidence: 99%

“…This eventually leads to interstitial diffusion of antimony into tin with the displacement of the tin atoms. 31…”

Section: Diffusionmentioning

confidence: 99%

Synthesis of pewter alloy from tin–copper–antimony powder mixtures by microwave and conventional sintering

2011

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Two compositions of pewter alloy were sintered using both microwave and conventional vacuum sintering, and the effects of sintering time, temperature and weight percentage of copper and antimony on the mechanical and structural properties were examined for both sintering methods. Microwave sintered samples had finer microstructures, higher densities, higher hardness and tensile strength compared to the conventionally sintered samples and traditionally cast pewter. By increasing the copper and antimony contents, higher hardness was achieved. Better mechanical properties were found after microwave sintering after shorter sintering times compared with conventional sintering, but longer sintering times resulted in better diffusion for both sintering methods. The microwave sintered samples in general were capable of achieving similar amounts of diffusion to those conventionally sintered for the same time. But the total sintering process is much faster in microwave heating than in conventional heating due to the rapid heating effect.

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“…Examples where samples were doped for segregation studies can be found in the papers by Madito et al ., Wang et al . and Asante et al . Apart from studying segregation, doped samples can be of interest to the catalysis and metallurgy community where the properties of the material are studied as a function of composition.…”

Section: Introductionmentioning

confidence: 99%

New method for the preparation of S doped Fe samples characterized by AES and TOF‐SIMS depth profiling

Barnard

Terblans

Swart

2014

Surface & Interface Analysis

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A new method for the preparation of sulfur (S) doped iron (Fe) samples is presented. The required amount of S in Fe is obtained by allowing the vaporized form of S to diffuse into a Fe sample (10 mm diameter, 0.5 mm thick) kept at a temperature of 750 K. Depth profile analysis using Auger Electron Spectroscopy and Time‐of‐Flight Secondary Ion Mass Spectrometry (TOF‐SIMS) showed that the method is reproducible and can be used for the preparation of samples with different S concentrations. It was also found that S deposited onto Fe forms the desired FeS phase, which will prevent S from evaporating when the sample is annealed. Prepared samples were annealed to obtain homogeneity of S in Fe, after which the amount of S in the respective samples was determined by quantitative TOF‐SIMS. The outcome of the results suggests the application of this method to other high melting point host and low melting point dopant systems. Copyright © 2014 John Wiley & Sons, Ltd.

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Segregation of Sn and Sb in a ternary Cu(100)SnSb alloy

Cited by 11 publications

References 14 publications

Segregation of Sn in the binary CuSn and ternary CuSnSb alloy systems

Segregation of Sn in the binary CuSn and ternary CuSnSb alloy systems

Synthesis of pewter alloy from tin–copper–antimony powder mixtures by microwave and conventional sintering

New method for the preparation of S doped Fe samples characterized by AES and TOF‐SIMS depth profiling

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