کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1605659 | 1516214 | 2016 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Effect of Al additions on the optical properties of Au α-phase Effect of Al additions on the optical properties of Au α-phase](/preview/png/1605659.png)
• Aluminium is found to be a very effective bleaching agent for Au.
• Dielectric function of (Au,Al) solid solutions measured.
• Al increases optical loss so (Au,Al) alloys not suitable for plasmonics.
The effect of aluminium on the optical properties of AlxAu1−x (0 < x < 0.12) substitutional solid solutions is determined. Reflectance spectra and ellipsometric data of a range of compositions are measured and the dielectric functions extracted. Al additions flatten the reflection edge and increase optical loss in the Drude region. The implications of these changes for selected technological applications are investigated. Aluminium is found to be a very effective bleaching agent for Au and could have application for the formulation of improved ‘white gold’ jewellery alloys. However, due to its limited solubility in Au α-phase, other alloying additions would still be required to make a commercially acceptable ‘white gold’. In contrast, the increased optical loss brought by the Al makes the alloys less suitable than pure Au for plasmonic applications or for spectrally selective coatings.
Figure optionsDownload as PowerPoint slide
Journal: Journal of Alloys and Compounds - Volume 679, 15 September 2016, Pages 225–230