Hydrogen diffusion and interpretation of the 200 K anelastic relaxation in NiTi alloys

被引：27

作者：

Mazzolai, FM ^{[1
]}

Coluzzi, B ^{[1
]}

Mazzolai, G ^{[1
]}

Biscarini, A ^{[1
]}

机构：

[1] Univ Perugia, Dept Phys, INFM UDR, I-06100 Perugia, Italy

来源：

APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 14期

关键词：

D O I：

10.1063/1.1799247

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The internal friction, the Young's modulus, and the heat flow have been measured as a function of temperature (20-360 K) at kilohertz frequencies in a H-free and H-doped Ni50.8Ti49.2 alloy, solubilized under vacuum and rapidly furnace cooled. The chemical H-diffusion coefficient D-C has been deduced from absorption experiments (323-1063 K) and has been compared with the Einstein diffusion coefficient D-E derived from a Snoek (or Zener)-type relaxation P-H. The comparison has allowed the interpretation of the so-called 200 K relaxation as a Snoek (or Zener)-type relaxation due to hydrogen. (C) 2004 American Institute of Physics.

引用

页码：2756 / 2758

页数：3

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