Gold based bulk metallic glass

被引：222

作者：

Schroers, J ^{[1
]}

Lohwongwatana, B

Johnson, WL

Peker, A

机构：

[1] CALTECH, Key Lab Engn Mat, Pasadena, CA 91125 USA

[2] Liquidmet Technol, Lake Forest, CA 92630 USA

来源：

APPLIED PHYSICS LETTERS | 2005年 / 87卷 / 06期

关键词：

D O I：

10.1063/1.2008374

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Gold-based bulk metallic glass alloys based on Au-Cu-Si are introduced. The alloys exhibit a gold content comparable to 18-karat gold. They show very low liquidus temperature, large supercooled liquid region, and good processibility. The maximum casting thickness exceeds 5 mm in the best glassformer. Au49Ag5.5Pd2.3Cu26.9Si16.3 has a liquidus temperature of 644 K, a glass transition temperature of 401 K, and a supercooled liquid region of 58 K. The Vickers hardness of the alloys in this system is similar to 350 Hv, twice that of conventional 18-karat crystalline gold alloys. This combination of properties makes the alloys attractive for many applications including electronic, medical, dental, surface coating, and jewelry. (c) 2005 American Institute of Physics.

引用

页数：3

共 24 条

[1]

*AM SOC MET, MET HDB

[2] EVIDENCE OF A GLASS-LIQUID TRANSITION IN A GOLD-GERMANIUM-SILICON ALLOY [J].