The Sc-Nd-Si ternary system at 870K

被引：8

作者：

Banakh, OE ^{[1
]}

Kotur, BY ^{[1
]}

机构：

[1] Ivan Franko Lviv State Univ, Dept Inorgan Chem, UA-290005 Lviv, Ukraine

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1998年 / 268卷 / 1-2期

关键词：

scandium neodymium; rare earth intermetallics; crystal structure; phase diagram;

D O I：

10.1016/S0925-8388(97)00593-8

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：

Phase equilibria at 870 K in the Sc-Nd-Si ternary system have been established. Five ternary compounds occur in the system. They crystallize in the following structure types: ScNd2Si2 in the Mo2FeB2 type (sp. gr. P4/mbm, a=7.307(3), c=4.323(2) Angstrom), ScNdSi in the ScCeSi type (sp. gr. I4/mmm, a=4.292(2), c=15.580(8) Angstrom), Sc0.85-0.95Nd0.15-0.05Si1.67 in the AlB2 type (sp. gr. P6/mmm, a=3.6644-3.6596(1), c=3.8896-3.8860(1) Angstrom), Sc3.96Nd1.04Si4 in the Sm5Si4 type (sp. gr. Pnma, a=7.058(2), b=13.912(4), c=7.361(1) Angstrom). The crystal structure of the ScNd2Si3 compound is unknown. The Sc-Si, Nd-Si and Si-Si interatomic distances are contracted in these structures. Mutual substitution of Sc and Nd from 4 up to 15 at.% in Sc5Si3, NdSi and NdSi2-x silicides was observed in the ternary system. (C) 1998 Elsevier Science S.A.

引用

页码：L3 / L5

页数：3

共 22 条

[1]

Akselrud L. G., 1989, 12 EUR CRYSTALLOGRAP, V3, P155

[2] CRYSTAL STRUCTURES OF SC5SI3, SC5GE3, LA5GE3, AND CE5GE3 [J].

ARBUCKLE, J ;

PARTHE, E .

ACTA CRYSTALLOGRAPHICA, 1962, 15 (DEC) :1205-&

[3]

Beaudry B J, 1965, P 4 C RAR EARTH RES, P247

[4]

Bodak O. I., 1985, TERNARY SYSTEMS CONT

[5]

Bokii G. B., 1971, CRYSTAL CHEM

[6]

DVORINA LA, 1965, INORG MATER, V1, P652

[7]

EREMENKO VN, 1988, SOV POWDER METALL+, V27, P967

[8]

EREMNKO VN, 1984, PHASE DIAGRAMS MAT S, P3

[9]

Gladyshevskii E.I., 1964, ZH STRUKT KHIM, V5, P853

[10]

GLADYSHEVSKII EI, 1965, NEORGAN MAT, V1, P702

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