METASTABLE BCC AND AMORPHOUS NI PRODUCED BY MECHANICAL ALLOYING AND CHEMICAL LEACHING

被引：14

作者：

MAKHLOUF, SA ^{[1
]}

SUMIYAMA, K ^{[1
]}

IVANOV, E ^{[1
]}

YAMAUCHI, H ^{[1
]}

HIHARA, T ^{[1
]}

SUZUKI, K ^{[1
]}

机构：

[1] UNIV ASSIUT, FAC SCI, DEPT PHYS, ASSIUT, EGYPT

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1994年 / 181卷 / pt 2期

关键词：

D O I：

10.1016/0921-5093(94)90828-1

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

B.c.c. and amorphous Ni are obtained by a technique combining mechanical alloying of Ni and Al elemental powders, and chemical leaching of Al in basic solution. The as-milled and milled-and-leached specimens are characterized by X-ray diffraction, transmission electron microscopy, high pressure differential thermal analysis, differential scanning calorimetry and magnetization measurements. B.c.c. and amorphous Ni phases exhibit paramagnetic characters at low temperatures and transform to the ferromagnetic f.c.c. Ni phase at high temperatures. Low temperature, specific heat measurements indicate the enhancement of its electronic coefficient in the paramagnetic b.c.c. and amorphous Ni in comparison with that of annealed f.c.c. Ni.

引用

页码：1184 / 1189

页数：6

共 13 条

[1] THE NATURE OF RANEY-NICKEL, ITS ADSORBED HYDROGEN AND ITS CATALYTIC ACTIVITY FOR HYDROGENATION REACTIONS - REVIEW [J].