A new ternary compound (Ni, Mn)2Ga in Ni-Mn-Ga system

被引：6
|
作者：
Ma, Yunqing [1 ]
Yang, Shuiyuan [1 ]
Zhou, Yan [1 ]
Wang, Cuiping [1 ]
Liu, Xingjun [1 ]
机构：
[1] Xiamen Univ, Coll Mat, Dept Mat Sci & Engn, Xiamen 361005, Peoples R China
来源：
INTERMETALLICS | 2010年 / 18卷 / 11期
关键词：
Intermetallics; Phase identification; Microstructure; HEUSLER ALLOYS; NI2MNGA;
D O I：
10.1016/j.intermet.2010.06.017
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：
A new ternary compound (Ni, Mn)(2)Ga was identified in Ni-Mn-Ga system by a combination of powder X-ray diffraction, differential thermal analysis and electron probe microanalysis. The (Ni, Mn)(2)Ga phase was determined with a Mn2Ge-type hexagonal structure, with lattice parameters of a = 4 1629(8) nm, c = 5 2983(9) nm, and unit cell volume of 0 07952(4) nm(3) after refinement The reversible phase transformation from (Ni, Mn)(2)Ga hexagonal structure to bcc (B2) cubic structure at high temperature was suggested by DTA measurements. The transformation peaking temperatures during heating and cooling are 834 0 degrees C and 815 8 degrees C for Mn40Ni25Ga35, 804 7 degrees C and 774 1 degrees C for Mn50Ni17Ga33, respectively (C) 2010 Elsevier Ltd All rights reserved.
引用
收藏
页码：2105 / 2108
页数：4
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