A study of the Al-Pt-Ir phase diagram

被引：3

作者：

Grushko, B. ^{[1
,2
]}

Samuha, S. ^{[3
,4
]}

Meshi, L. ^{[3
]}

机构：

[1] MaTecK, D-52428 Julich, Germany

[2] Forschungszentrum Julich, PGI 5, D-52425 Julich, Germany

[3] Ben Gurion Univ Negev, Dept Mat Engn, IL-84105 Beer Sheva, Israel

[4] Nucl Res Ctr Negev, IL-84190 Beer Sheva, Israel

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 646卷

关键词：

Transition metal alloys and compounds; Phase diagrams; Crystal structure; CRYSTAL-STRUCTURE; RICH REGION; ALUMINUM; INTERMETALLICS; ALLOYS; METALS;

D O I：

10.1016/j.jallcom.2015.06.118

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：

Phase equilibria in Al-Pt-Ir were studied up to 50 at.% Al at 1100 degrees C, up to 70 at.% Al at 900 degrees C and up to 75 at.% Al at 810 degrees C. At elevated temperatures the isostructural AlIr and high-temperature AlPt beta-phases probably form a continuous compositional region. The ternary extensions of the phases Al4Pt, Al21Pt8, Al3Pt2 and low-temperature AlPt were revealed along approximately constant Al concentrations up to 15, 11, 20 and 10 at.% Ir, respectively. The Al-Ir C-phase dissolved up to 12 at.% Pt, and the chi-phase propagated up to almost Al3Pt. A new ternary B-phase (I4(1)/acd, a = 0.86250, c = 2.18409 nm) was revealed around Al69Pt7Ir24. Its structural model was derived from the electron diffraction data. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：873 / 878

页数：6

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