Determination of the Phase Equilibria in the Mn-Sn-Zn System at 500 °C

被引：7

作者：

Liang, J. L. ^{[1
,2
]}

Du, Y. ^{[1
]}

Zhao, Q. Z. ^{[2
]}

Liao, C. Z. ^{[3
]}

Tang, Y. Y. ^{[2
]}

Zeng, L. M. ^{[3
]}

Zhang, W. W. ^{[1
]}

Xu, H. H. ^{[1
]}

机构：

[1] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China

[2] Guangxi Univ Nationalities, Inst Mat Sci, Coll Phys & Elect Engn, Nanning 530006, Guangxi, Peoples R China

[3] Guangxi Univ, Key Lab Nonferrous Met & New Proc Technol Mat, Minist Educ, Guangxi, Peoples R China

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2009年 / 40A卷 / 12期

基金：

中国国家自然科学基金;

关键词：

450-DEGREES-C ISOTHERMAL SECTION; ZINC-RICH CORNER; GALVANIZED COATINGS; QUATERNARY SYSTEM; CRYSTAL-STRUCTURE; NI SYSTEM; BATH; DIAGRAM;

D O I：

10.1007/s11661-009-0026-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The isothermal section of the Mn-Sn-Zn system at 500 degrees C was determined with 20 alloys. The alloys were prepared by melting the pure elements in evacuated quartz capsules. The alloy samples were examined by means of X-ray diffraction (XRD) and scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy. A new ternary phase Mn4Zn8Sn (lambda) was found to have a bcc structure with a lattice parameter a = 0.92508 (5) nm. Its composition range spans 25 to 35 at. pct Mn, 4 to 8 at. pct Sn, and 55 to 70 at. pct Zn. The Zn is substituted for Mn in Mn3Sn, Mn2Sn, and Mn3Sn2. The solubility of Zn in Mn3Sn, Mn2Sn, and Mn3Sn2 was measured to be about 17, 12, and 4 at. pct, respectively. The phase boundaries of the liquid and beta-Mn phases were well established. The following 3 three-phase equilibria were well determined: (1) beta-Mn + epsilon-MnZn3 + Mn3Sn, (2) lambda + Mn3Sn + Mn2Sn, and (3) L+ lambda + Mn2Sn. The additional 5 three-phase equilibria, which are epsilon-MnZn3 + lambda + Mn3Sn, epsilon(1)-MnZn3 + epsilon-MnZn3 + lambda, epsilon(1)-MnZn3 + lambda + L, Mn2Sn + L + MnSn2, and Mn3Sn2 + MnSn2 + Mn2Sn, were deduced and shown with dashed lines in the present isothermal section.

引用

页码：2909 / 2918

页数：10

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