Energetic consideration of compounds at Mg2Si-Ni electrode interlayer produced by spark-plasma sintering

被引：8

作者：

Imai, Yoji ^{[1
]}

Sugawara, Hiroharu ^{[2
]}

Mori, Yoshihisa ^{[3
]}

Nakamura, Shigeyuki ^{[4
]}

Yamamoto, Atsushi ^{[1
]}

Takarabe, Ken-ichi ^{[3
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058562, Japan

[2] Tokyo Metropolitan Univ, Tokyo 1910065, Japan

[3] Okayama Univ Sci, Okayama 7000005, Japan

[4] Tsuyama Coll, Natl Inst Technol, Tsuyama, Okayama 7088509, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2017年 / 56卷 / 05期

关键词：

HIGH-ENTROPY ALLOYS; PSEUDOPOTENTIALS; PREDICTION; LATTICE; SYSTEM; MG; CU;

D O I：

10.7567/JJAP.56.05DC03

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In order to understand the presence of the MgNi2-type phase, the eta-phase, and the.-phase at the boundary layer produced by the simultaneous spark plasma sintering of mixed Ni and Mg2Si powders, we have calculated the electronic energies of these phases. The phase change of MgNi2XSi2(1% X) from the Cu2Mg-type to the MgNi2-type through the Fe2Tb-type structures with increases in X, as observed by Song and Varin [Metall. Mater. Trans. A 32, 5 (2001)], is well-reproduced by the present calculations. The stability of the eta-phase (Mg6Ni16Si7) is also explained, but that of the omega-phase is not explained by the energetic calculations, even if the entropy effect of mixing is assumed. (C) 2017 The Japan Society of Applied Physics

引用

页数：8

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