Phase relations of the Sm-Ni-Al ternary system at 500°C in the 40-100 at.% Al region

被引：15
作者：
Delsante, S. [1 ]
Raggio, R. [1 ]
Borzone, G. [1 ]
机构：
[1] Univ Genoa, Consorzio INSTM UdR Genova, Dipartimento Chim & Chim Ind, I-16146 Genoa, Italy
来源：
INTERMETALLICS | 2008年 / 16卷 / 11-12期
关键词：
Rare-earth intermetallics; Intermetallics; miscellaneous; Phase diagrams; Crystal chemistry of intermetallics; Electron microscopy; scanning;
D O I：
10.1016/j.intermet.2008.07.010
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The isothermal section at 500 degrees C of the Sm-Ni-Al ternary system in the 40-100 at.% Al region has been investigated by means of optical and electronic microscopy, quantitative microprobe microanalysis and X-ray powder diffraction. At this temperature six intermetallic phases have been determined. The existence of the Sm4Ni6Al23, SmNi6Al4, SmNiAl2 and SmNiAl phases, already known in the literature, was confirmed. Two new intermetallic phases and their crystal structures were determined, SmNiAl3, oP20-YNiAl3 type and SmNi2Al3, hP18-HoNi(2.6)Ga(2)A type. The phase relationships have been established and two ternary eutectic equilibria in the Al-rich region have been identified: E-1, Ni-rich: Al + NiAl3 + Sm4Ni6Al23 and E-2, Sm-rich: Al + SmAl3 + Sm4Ni6Al23. (C) 2008 Elsevier Ltd. All rights reserved.
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页码：1250 / 1257
页数：8
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