Experimental investigation of the Ce-Cu phase diagram

被引：15

作者：

Zhou, Huaiying ^{[1
]}

Tang, Chengying ^{[1
]}

Tong, Minmin ^{[1
]}

Gu, Zhengfei ^{[1
]}

Yao, Qingrong ^{[1
]}

Rao, Guangfei ^{[1
]}

机构：

[1] Guilin Univ Elect Technol, Sch Mat Sci & Engn, Guilin 541004, Guangxi, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2012年 / 511卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Ce-Cu; X-ray diffraction; Thermal analysis; Phase diagram; GLASS-FORMING ABILITY; TEMPERATURE HEAT-CONTENT; BINARY-SYSTEMS; ALLOYS; PR; LA; ND; THERMOCHEMISTRY; CAPACITY; AU;

D O I：

10.1016/j.jallcom.2011.09.054

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 binary Ce-Cu system has been re-investigated via the selected eighteen key alloys by means of the differential scanning calorimetry (DSC), X-ray diffraction (XRD), and scanning electron microscopy (SEM) with energy dispersive X-ray analysis techniques. Five intermetallic compounds, Cu6Ce, Cu5Ce, Cu4Ce, Cu2Ce, and CuCe, have been confirmed. Cu6Ce and Cu2Ce melt congruently at 947 degrees C and 810 degrees C, respectively. Cu5Ce, Cu4Ce, and CuCe are formed through peritectic reactions, L + Cu6Ce <-> Cu5Ce at 799 degrees C, L + Cu5Ce <-> Cu4Ce at 792 degrees C, and L + Cu2Ce <-> CuCe at 492 degrees C, respectively. Three eutectic reactions, L <-> (Cu) + Cu6Ce at 879 degrees C, L <-> Cu4Ce + Cu2Ce at 753 degrees C, and L <-> CuCe + (gamma Ce) at 407 degrees C, have been observed. One catatectic reaction, (delta Ce) <-> L + (gamma Ce) at 702 degrees C, was determined. According to the present experimental results, the Ce-Cu phase diagram is revised. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：262 / 267

页数：6

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