Revisiting the revised Ag-Pt phase diagram

被引：32

作者：

Hart, Gus L. W. ^{[1
]}

Nelson, Lance J. ^{[1
]}

Vanfleet, Richard R. ^{[1
]}

Campbell, Branton J. ^{[1
]}

Sluiter, Marcel H. F. ^{[2
]}

Neethling, Jan H. ^{[3
]}

Olivier, Ezra J. ^{[3
]}

Allies, Soraya ^{[4
]}

Lang, Candace I. ^{[5
]}

Meredig, Bryce ^{[6
,7
]}

Wolverton, Christopher ^{[6
]}

机构：

[1] Brigham Young Univ, Dept Phys & Astron, Provo, UT 84602 USA

[2] Delft Univ Technol, Dept Mat Sci & Engn, Mekelweg 2, NL-2628 CD Delft, Netherlands

[3] Nelson Mandela Metropolitan Univ, Dept Phys, Ctr HRTEM, POB 77000, ZA-6031 Port Elizabeth, South Africa

[4] Univ Cape Town, Dept Mech Engn, Ctr Mat Engn, ZA-7700 Rondebosch, South Africa

[5] Macquarie Univ, Dept Engn, Sydney, NSW, Australia

[6] Northwestern Univ, Dept Mat Sci & Engn, 2220 Campus Dr, Evanston, IL 60208 USA

[7] Citrine Informat, 1741 Broadway St, Redwood City, CA 94063 USA

来源：

ACTA MATERIALIA | 2017年 / 124卷

关键词：

Platinum alloys; Cluster expansion; Phase diagrams; Ag-Pt; ALLOYS; PLATINUM;

D O I：

10.1016/j.actamat.2016.10.053

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Because of the important applications of platinum alloys and related platinum-group-metals phases, complete phase diagrams for these systems are important for materials engineering. The currently accepted phase diagram for the Ag-Pt system is questionable because of its disagreement with earlier experiments and because of its claim for a lone ordered structure at 53%-Pt which was not characterized and which contradicts both computational predictions and analogy to the isoelectronic system Cu-Pt. A complete re-examination of the Ag-Pt system by computational and experimental means suggests a phase diagram similar to the isoelectronic system Cu-Pt. The unknown compound, claimed to be 53%-Pt, is found to be the L1(1) structure at 50%-Pt. (c) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：325 / 332

页数：8

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