Producing alloy nanoparticles by discharge‐assisted erosion of electrodes immersed in liquid nitrogen is possible in the cobalt–nickel system. Several electrode configurations are tested. When one nickel electrode faces one cobalt electrode, Co_xNi_1−x alloy nanoparticles are produced with nickel cubic nanoparticles and cobalt round‐shaped faceted nanoparticles. The possibility of forming alloys is attributed to a sufficiently long residence time of both parent clusters within the discharge and to their total miscibility. It is also possible to form submicrometric Co_xNi_1−x alloy particles when discharges between cobalt electrodes are run in liquid nitrogen loaded with nickel nanoparticles produced in a former step. Starting by discharges between Co electrodes before Ni electrodes do not produce any alloy. The two mechanisms responsible for alloy synthesis are discussed.

中文翻译：

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液氮中纳秒脉冲放电合成的CoNi纳米颗粒中合金形成的证据

在钴镍体系中，可以通过浸没在液氮中的电极的放电辅助腐蚀来生产合金纳米颗粒。测试了几种电极配置。当一个镍电极面对一个钴电极时，会生成由镍立方纳米粒子和钴圆形多面纳米粒子组成的Co _x Ni _{1- x}合金纳米粒子。形成合金的可能性归因于两个母体簇在放电中的足够长的停留时间以及它们的总混溶性。也可以形成亚微米级的Co _x Ni _{1- x}当钴电极之间的放电在负载了前一步生成的镍纳米颗粒的液氮中运行时，合金颗粒会沉积。在Ni电极不产生任何合金之前，先从Co电极之间的放电开始。讨论了负责合金合成的两种机理。