Fast diffusion in ZrTiCuNiBe melts

被引：62

作者：

Meyer, A ^{[1
]}

Petry, W

Koza, M

Macht, MP

机构：

[1] Tech Univ Munich, Dept Phys E13, D-85747 Garching, Germany

[2] Inst Laue Langevin, F-38042 Grenoble, France

[3] Hahn Meitner Inst Berlin GmbH, D-14109 Berlin, Germany

来源：

APPLIED PHYSICS LETTERS | 2003年 / 83卷 / 19期

关键词：

D O I：

10.1063/1.1625793

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Atomic transport in Zr41.2Ti13.8Cu12.5Ni10Be22.5 and Zr46.8Ti8.2Cu7.5Ni10Be27.5 melts has been investigated with incoherent, quasielastic neutron scattering. From the q dependence of the quasielastic signal an average self-diffusion coefficient of the incoherent scatterers Ni and Ti has been obtained. Values are on a 10(-10) m(2) s(-1) scale. In contrast to the viscosity, the diffusion coefficient is rather independent of the alloy's composition. Above the liquidus temperature times scales for Ni and Ti self diffusion and for viscous flow differ by up to two orders of magnitude: It appears, that the smaller atoms diffuse in a relative immobile Zr matrix. (C) 2003 American Institute of Physics.

引用

页码：3894 / 3896

页数：3

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