Pressure dependence of Ni self-diffusion in NiTi

被引：19
作者：
Erdélyi, G
Erdélyi, Z
Beke, DL
Bernardini, J
Lexcellent, C
机构：
[1] Univ Debrecen, Dept Solid State Phys, Fac Med, H-4010 Debrecen, Hungary
[2] Fac Sci & Tech St Jerome, CNRS, Lab Mat & Microelect Provance, F-13397 Marseille, France
[3] Univ Franche Comte, UFF Sci & Tech, Lab Mecan Appl Raymond Chaleat, F-25030 Besancon, France
来源：
PHYSICAL REVIEW B | 2000年 / 62卷 / 17期
关键词：
D O I：
10.1103/PhysRevB.62.11284
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The volume diffusion of Ni was studied in a nearly equiatomic B2 NiTi compound at 1285 K in the pressure range of 0-0.91 GPa. Our measurements, carried out by the tracer technique, proved that the volume diffusion coefficient is independent of the external pressure, and the evaluated activation volume is close to zero. Results may refer either to the interstitial diffusion mechanism or vacancy-mediated diffusion, indicating that in the latter case the vacancy concentration is pressure independent in the investigated pressure range.
引用
收藏
页码：11284 / 11287
页数：4
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