THE SCANDIUM-IRIDIUM PHASE-DIAGRAM

被引：13

作者：

YEREMENKO, VN ^{[1
]}

KHORUJAYA, VG ^{[1
]}

MARTSENYUK, PS ^{[1
]}

机构：

[1] IN FRANTSEVICH PROBLEMS MAT SCI INST,KIEV,UKRAINE

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1994年 / 204卷 / 1-2期

关键词：

Phase diagrams;

D O I：

10.1016/0925-8388(94)90075-2

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 constitutional diagram of the Sc-Ir system is investigated for the first time. Using metallography, X-ray diffraction, microprobe and differential thermal analysis data as well as alloy melting point data measured according to the Piruny-Altertoom method, seven intermediate phases - ScIr, (Cu3Au-type structure), ScIr2 (MgCu2), ScIr (CSCl), Sc2Ir (Ti2Ni), Sc11Ir4 (Zr11OS4), Sc57Ir13 (SC57Rh13) and Sc44Ir7 (Mg44Rh7) - were determined in the system, two of them, namely Sc2Ir and ScIr3, being ascertained for the first time. The SCIr2, ScIr, Sc11Ir4, and Sr57Ir13 phases melt congruently at 2150, 2100, 1410 and 1480-degrees-C respectively, while ScIr3, SC2Ir and SC44Ir7 melt incongruently at 1980, 1420 and 1420-degrees-C respectively. Coordinates of eutectic and eutectoid points are determined.

引用

页码：83 / 87

页数：5

共 7 条

[1]

ALDRED AT, 1962, T METALL SOC AIME, V224, P1082

[2] CUBIC SC57RH13 AND ORTHORHOMBIC HF54OS17, 2 GEOMETRICALLY RELATED CRYSTAL-STRUCTURES WITH RHODIUM-CENTERED AND OSMIUM-CENTERED ICOSAHEDRA [J].