Scientific direction Development of key enabling technologies
Transfer of knowledge to industry

PhD : selection by topics

Engineering science >> Chemistry
1 proposition(s).

Development of metal components by stereolithography - Copper for energy application

Département des Technologies des NanoMatériaux (LITEN)

Laboratoire Recyclage et Valorisation des Matériaux



Stereolithography (SLA) is a well-known additive manufacturing process based on photopolymerisation reaction. Specifically, metal SLA is based on the blend of a photocurable resin with a metallic powder. In this process, the polymer gives mechanical strength to the part during the manufacturing step. The polymer is then thermally removed (debinding step), and the parts is sintered. This process has the benefit of addressing a large number of materials, relying on the expertise of the powder metallurgy in terms of debinding /sintering and being easily implemented in this industrial field. Copper is known for energy application by their high thermal (385 W/m.K) and electrical (59.6 x 106 S.m-1) properties. The objective is to control the impact of the stereolithography process (formulation, light/matter interaction, thermal treatment) on thermal and electrical properties of bulk and structured copper components. The impact of the formulation on the cross-linking rate and the green mechanical strength, the relation between the cross-linking rate and the filled resin degradation on the cracking during the thermal step, and the relation between the thermal and electrical properties of the copper components and the microstructure, the density and the light elements contamination should be investigated during the PhD.

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