For fundamental physics experiments conducted on the Megajoule Laser, the CEA must develop mesoporous metal materials with very low apparent density. Based on the discovery by CEA researchers of a new reactive mechanism between plasma and liquid, CEA has developed a unique electrolytic plasma synthesis process in the world. This technology converts thousands of flashes into as many metallic nano-filaments in seconds to form metals in the form of a nano-structured, ultra-light sponge.
The understanding of the physico-chemical mechanisms that govern the synthesis of these foams is crucial to optimize the properties of synthetic raw materials. A first part of the thesis will consist in continuing the studies already carried out and completing the innovative phenomenological model in the field of electrolytic plasmas.
In a second step, the influence of a heat treatment on the crystallization of these materials and their mechanical resistance will be conducted in order to optimize their subsequent shaping by laser or ultra-precision mechanical machining.