Interdiffusion in the Ir-rich solid solutions of Ir-Pt, Ir-Rh, and Ir-Re binary alloys

Nobuaki Sekido; Akinori Hoshino; Masahiro Fukuzaki; Tomohiro Maruko; Yoko Yamabe-Mitarai

doi:10.1007/s11669-011-9873-2

Interdiffusion in the Ir-rich solid solutions of Ir-Pt, Ir-Rh, and Ir-Re binary alloys

Nobuaki Sekido, Akinori Hoshino, Masahiro Fukuzaki, Tomohiro Maruko, Yoko Yamabe-Mitarai

Research output: Contribution to journal › Article

3 Citations (Scopus)

Abstract

Interdiffusivity in the Ir-rich solid solutions of Ir-X (X = Pt, Rh and Re) binary alloys was investigated in the temperature range of 2073-2373 K. The interdiffusion coefficients within the solute concentration range up to 10 at.% were evaluated through conventional diffusion-couple experiments. The composition dependence of the interdiffusion coefficient was negligible in the Ir-Rh and Ir-Re solid solutions. On the other hand, some composition dependence was evident in the interdiffusion coefficient of the Ir-Pt solid solution, which increased with increasing Pt content. In comparison with the tracer self-diffusivity of pure Ir, the interdiffusivity in the Ir-Rh and Ir-Pt solid solutions was higher, but that in Ir-Re was lower within the temperature range studied.

Original language	English
Pages (from-to)	219-225
Number of pages	7
Journal	Journal of Phase Equilibria and Diffusion
Volume	32
Issue number	3
DOIs	https://doi.org/10.1007/s11669-011-9873-2
Publication status	Published - 2011 Jun 1
Externally published	Yes

Keywords

Boltzmann-Matano analysis
diffusivity measurements
electron probe microanalysis (EPMA)
interdiffusion

ASJC Scopus subject areas

Condensed Matter Physics
Metals and Alloys
Materials Chemistry

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Sekido, N., Hoshino, A., Fukuzaki, M., Maruko, T., & Yamabe-Mitarai, Y. (2011). Interdiffusion in the Ir-rich solid solutions of Ir-Pt, Ir-Rh, and Ir-Re binary alloys. Journal of Phase Equilibria and Diffusion, 32(3), 219-225. https://doi.org/10.1007/s11669-011-9873-2

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title = "Interdiffusion in the Ir-rich solid solutions of Ir-Pt, Ir-Rh, and Ir-Re binary alloys",

abstract = "Interdiffusivity in the Ir-rich solid solutions of Ir-X (X = Pt, Rh and Re) binary alloys was investigated in the temperature range of 2073-2373 K. The interdiffusion coefficients within the solute concentration range up to 10 at.% were evaluated through conventional diffusion-couple experiments. The composition dependence of the interdiffusion coefficient was negligible in the Ir-Rh and Ir-Re solid solutions. On the other hand, some composition dependence was evident in the interdiffusion coefficient of the Ir-Pt solid solution, which increased with increasing Pt content. In comparison with the tracer self-diffusivity of pure Ir, the interdiffusivity in the Ir-Rh and Ir-Pt solid solutions was higher, but that in Ir-Re was lower within the temperature range studied.",

keywords = "Boltzmann-Matano analysis, diffusivity measurements, electron probe microanalysis (EPMA), interdiffusion",

author = "Nobuaki Sekido and Akinori Hoshino and Masahiro Fukuzaki and Tomohiro Maruko and Yoko Yamabe-Mitarai",

year = "2011",

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T1 - Interdiffusion in the Ir-rich solid solutions of Ir-Pt, Ir-Rh, and Ir-Re binary alloys

AU - Sekido, Nobuaki

AU - Hoshino, Akinori

AU - Fukuzaki, Masahiro

AU - Maruko, Tomohiro

AU - Yamabe-Mitarai, Yoko

PY - 2011/6/1

Y1 - 2011/6/1

N2 - Interdiffusivity in the Ir-rich solid solutions of Ir-X (X = Pt, Rh and Re) binary alloys was investigated in the temperature range of 2073-2373 K. The interdiffusion coefficients within the solute concentration range up to 10 at.% were evaluated through conventional diffusion-couple experiments. The composition dependence of the interdiffusion coefficient was negligible in the Ir-Rh and Ir-Re solid solutions. On the other hand, some composition dependence was evident in the interdiffusion coefficient of the Ir-Pt solid solution, which increased with increasing Pt content. In comparison with the tracer self-diffusivity of pure Ir, the interdiffusivity in the Ir-Rh and Ir-Pt solid solutions was higher, but that in Ir-Re was lower within the temperature range studied.

AB - Interdiffusivity in the Ir-rich solid solutions of Ir-X (X = Pt, Rh and Re) binary alloys was investigated in the temperature range of 2073-2373 K. The interdiffusion coefficients within the solute concentration range up to 10 at.% were evaluated through conventional diffusion-couple experiments. The composition dependence of the interdiffusion coefficient was negligible in the Ir-Rh and Ir-Re solid solutions. On the other hand, some composition dependence was evident in the interdiffusion coefficient of the Ir-Pt solid solution, which increased with increasing Pt content. In comparison with the tracer self-diffusivity of pure Ir, the interdiffusivity in the Ir-Rh and Ir-Pt solid solutions was higher, but that in Ir-Re was lower within the temperature range studied.

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KW - diffusivity measurements

KW - electron probe microanalysis (EPMA)

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