Interdiffusion in the Ir-Rich Solid Solutions of Ir-Pt, Ir-Rh, and Ir-Re Binary Alloys

被引：7

作者：

Sekido, Nobuaki ^{[1
]}

Hoshino, Akinori ^{[2
]}

Fukuzaki, Masahiro ^{[2
]}

Maruko, Tomohiro ^{[2
]}

Yamabe-Mitarai, Yoko ^{[1
]}

机构：

[1] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan

[2] Furuya Met Co Ltd, Chikusei, Ibaraki 3080861, Japan

来源：

JOURNAL OF PHASE EQUILIBRIA AND DIFFUSION | 2011年 / 32卷 / 03期

关键词：

Boltzmann-Matano analysis; diffusivity measurements; electron probe microanalysis (EPMA); interdiffusion; SINGLE-CRYSTAL SUPERALLOY; MODIFIED ALUMINIDE COATINGS; OXIDATION BEHAVIOR; CHEMICAL DIFFUSION; IRIDIUM; NICKEL; INTERMETALLICS; RESISTANCE; BARRIER; SYSTEM;

D O I：

10.1007/s11669-011-9873-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：219 / 225

页数：7

共 34 条

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