Swiatkowska-Warkocka Zaneta, Pyatenko Alexander, Krok Franciszek, Jany Benedykt R, Marszalek Marta
Institute of Nuclear Physics Polish Academy of Sciences, PL-31342 Krakow, Poland.
National Institute of Advanced Industrial Science and Technology, Tsukuba, 305-8565, Japan.
Sci Rep. 2015 May 8;5:9849. doi: 10.1038/srep09849.
The generation of nanoalloys of immiscible metals is still a challenge using conventional methods. However, because these materials are currently attracting much attention, alternative methods are needed. In this article, we demonstrate a simple but powerful strategy for the generation of a new metastable alloy of immiscible metals. Au(1-x)Ni(x) 3D structures with 56 at% of nickel in gold were successfully manufactured by the pulsed laser irradiation of colloidal nanoparticles. This technology can be used for preparing different metastable alloys of immiscible metals. We hypothesise that this technique leads to the formation of alloy particles through the agglomerations of nanoparticles, very fast heating, and fast cooling/solidification. Thus, we expect that our approach will be applicable to a wide range of inorganic solids, yielding even new metastable solids that fail to be stable in the bulk systems, and therefore do not exist in Nature.
使用传统方法生成不混溶金属的纳米合金仍然是一项挑战。然而，由于这些材料目前备受关注，因此需要替代方法。在本文中，我们展示了一种简单但强大的策略来生成一种新的不混溶金属亚稳合金。通过对胶体纳米颗粒进行脉冲激光辐照，成功制备了金中镍含量为56原子百分比的Au(1-x)Ni(x)三维结构。该技术可用于制备不同的不混溶金属亚稳合金。我们推测，该技术通过纳米颗粒的团聚、极快速加热以及快速冷却/凝固导致合金颗粒的形成。因此，我们期望我们的方法将适用于广泛的无机固体，甚至能产生在块状体系中不稳定因而在自然界不存在的新亚稳固体。
