Schroers, Jan and Lohwongwatana, Boonrat and Johnson, William L. and Peker, Atakan (2005) Gold based bulk metallic glass. Applied Physics Letters, 87 (6). Art. No. 061912. ISSN 0003-6951 http://resolver.caltech.edu/CaltechAUTHORS:SCHapl05
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Abstract
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.
| Item Type: | Article |
|---|---|
| Additional Information: | ©2005 American Institute of Physics. Received 7 February 2005; accepted 2 June 2005; published online 3 August 2005. |
| Subject Keywords: | gold alloys; silver alloys; palladium alloys; copper alloys; silicon alloys; metallic glasses; casting; glass transition; Vickers hardness |
| Record Number: | CaltechAUTHORS:SCHapl05 |
| Persistent URL: | http://resolver.caltech.edu/CaltechAUTHORS:SCHapl05 |
| Alternative URL: | http://dx.doi.org/10.1063/1.2008374 |
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. |
| ID Code: | 3467 |
| Collection: | CaltechAUTHORS |
| Deposited By: | Tony Diaz |
| Deposited On: | 08 Jun 2006 |
| Last Modified: | 26 Dec 2012 08:54 |
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