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Gd-Sn二元系合金相图

物理学报, 1984, 33(8): 1155-1159.
DOI: 10.7498/aps.33.1155
CSTR: 32037.14.aps.33.1155

PHASE DIAGRAM OF THE ALLOYS IN Gd-Sn BINARY SYSTEM

Acta Phys. Sin., 1984, 33(8): 1155-1159.
DOI: 10.7498/aps.33.1155
CSTR: 32037.14.aps.33.1155
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  • 摘要

    本文用X射线衍射和差热分析方法,对Gd-Sn二元系进行了研究,观察到三种新的金属间化合物Gd3Sn,Gd8Sn7和Gd3Sn4,并作出了这个二元系合金相图。这个二元系中,共存在着八种金属间化合物,它们是:Gd3Sn,Gd5Sn3,Gd5Sn4,Gd8Sn7,Gd11Sn10,Gd3Sn4,GdSn2和GdSn3。金属间化合物Gd3Sn和Gd5Sn3分别在1173℃和1243℃同成分熔化;金属间化合物Gd5Sn4,Gd8Sn7,Gd11Sn10,Gd3Sn4,GdSn2和GdSn3分别在1179℃,1114℃,1095℃,995℃,941℃和905℃由包晶反应生成。存在着1103℃约15at％Sn,1141℃约32at％Sn和232℃约100at％Sn三个共晶反应。无论是Gd在Sn中还是Sn在Gd中都没有观察到溶解度。

     

    Abstract

    The phase diagram of gadolinium-tin system has been completed by X-ray method in conjunction with differential thermal analysis. Three new intermetallic compounds: Gd3Sn,Gd8Sn7 and Gd3Sn4, were observed.In this system, there exist eight intermetallic compounds:Gd3Sn,Gd5Sn3,Gd5Sn4,Gd8Sn7,Gd11Sn10,Gd3Sn4,GdSn2 and GdSn3. The intermetallic compounds Gd3Sn and Gd5Sn3 melt congruently at 1173℃ and 1243℃, and the intermetallic compounds Gd5Sn4, Gd8Sn7, Gd11Sn10, Gd3Sn4, GdSn2 and GdSn3 are foymed by Six peritectic reactions at 1179℃,, 1114℃, 1095℃, 995℃,941℃, and 905℃, respectively. Three eutectic reactions occur at 15at% Sn and 1103℃, 32at% Sn and 1141℃, l00at% Sn and 232℃ Neither Gd in Sn nor Sn in Gd Shows any detectable solid solubility.

     

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