Design and Manufacturing of Si-Based Non-Oxide Cellular Ceramic Structures through Indirect 3D Printing

Materials

Bertrand Rebière¹  Chrystelle Salameh²  Mikhael Bechelany²  Ghenwa El Chawich²  Joelle El Hayek²  Didier Cot²  Vincent Rouessac²  Philippe Miele²  Hélène Garay³  Roland Habchi⁴  Mirvat Zakhour⁴ 

[1] Institut Charles Gerhardt Montpellier (ICGM), UMR 5253, University Montpellier, CNRS, ENSCM, CEDEX 5, 34095 Montpellier, France;Institut Européen des Membranes, IEM, UMR 5635, University Montpellier, CNRS, ENSCM, CEDEX 5, 34095 Montpellier, France;Institut des Sciences Analytiques et de Physico-Chimie pour l’Evironnement et les Matériaux (IPREM), IMT Mines Alès, Université de Pau et des Pays de l’Adour, E2S UPPA, CNRS, 64053 Pau, France;Laboratoire de Chimie Physique des Matériaux/Plateforme de Recherche en Nanomatériaux et Nanotechnologies (LCPM/PR2N), Lebanese University, Beirut 90656, Lebanon;

关键词: additive manufacturing;    Fused Deposition Modeling;    Polymer-Derived Ceramics;    non-oxide ceramics;    replica process;    SiCN;   

DOI  :  10.3390/ma15020471

来源: DOAJ

【 摘 要 】

Additive manufacturing of Polymer-Derived Ceramics (PDCs) is regarded as a disruptive fabrication process that includes several technologies such as light curing and ink writing. However, 3D printing based on material extrusion is still not fully explored. Here, an indirect 3D printing approach combining Fused Deposition Modeling (FDM) and replica process is demonstrated as a simple and low-cost approach to deliver complex near-net-shaped cellular Si-based non-oxide ceramic architectures while preserving the structure. 3D-Printed honeycomb polylactic acid (PLA) lattices were dip-coated with two preceramic polymers (polyvinylsilazane and allylhydridopolycarbosilane) and then converted by pyrolysis respectively into SiCN and SiC ceramics. All the steps of the process (printing resolution and surface finishing, cross-linking, dip-coating, drying and pyrolysis) were optimized and controlled. Despite some internal and surface defects observed by topography, 3D-printed materials exhibited a retention of the highly porous honeycomb shape after pyrolysis. Weight loss, volume shrinkage, roughness and microstructural evolution with high annealing temperatures are discussed. Our results show that the sacrificial mold-assisted 3D printing is a suitable rapid approach for producing customizable lightweight highly stable Si-based 3D non-oxide ceramics.

【 授权许可】

Unknown