Icosahedral Ti-Zr-Ni and hydrogenated Ti-Zr-Ni quasicrystals under high pressure

被引：13
|
作者：
Sadoc, A
Itié, JP
Polian, A
Kim, JY
Kelton, KF
机构：
[1] Univ Cergy Pontoise, LPMS, F-95031 Cergy Pontoise, France
[2] Univ Cergy Pontoise, CINQ, GDR, F-95031 Cergy Pontoise, France
[3] Ctr Univ Paris Sud, LURE, F-91898 Orsay, France
[4] Univ Paris 06, PMS, F-75252 Paris 05, France
[5] Washington Univ, Dept Phys, St Louis, MO 63130 USA
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2000年 / 294卷
基金：
美国国家科学基金会;
关键词：
quasicrystal; hydrogen; high pressure; X-ray diffraction; Ti-Ni-Zr;
D O I：
10.1016/S0921-5093(00)01065-0
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We present results from the first X-ray diffraction studies under high pressure in icosahedral Ti-Ni-Zr quasicrystals (QCs). The icosahedral Ti53Zr27Ni20 phase and an icosahedral Ti45Zr38Ni17 phase that also contains 0.32 hydrogen atoms for each metal atom were investigated. The icosahedral QC structure is retained up to the highest pressures used. The six-dimensional (6D) lattice parameters were obtained as a function of pressure. The zero-pressure bulk modulus and its pressure derivative were determined for the different samples by fitting the 6D parameter change to a Murnaghan-type equation of state. It is worthwhile mentioning that the hydrogenated sample appears more compressible than the one without hydrogen. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：804 / 805
页数：2
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