3D printing of SiOC(Fe) polymer-derived ceramics and their structure-performance

Integration of polymer-derived SiOC(Fe) ceramic technology with 3D printing successfully enables the development of a photosensitive polymer precursor resin modified with vinyl-ferrocene (VcFe). This resin combines low viscosity，high photosensitivity，and excellent curing strength，enabling fabrication of precursor models with complex geometric structures and micro-nano features. Following pyrolysis at 1000 ℃ in an argon atmosphere，structurally intact and uniformly shrunken SiOC(Fe) ceramic components are obtained，with a mass retention rate of 45.27%，a density of 1.89 g/cm3，and a linear shrinkage of 32.94%. The study systematically investigates phase evolution and volumetric shrinkage behavior during pyrolysis and characterized the ceramic hardness (achieving 5.93 GPa after pyrolysis at 1000 ℃). This work effectively validates the feasibility of fabricating complex-structured SiOC(Fe) ceramics via 3D printing combined with polymer-derived ceramic technology，providing guidance for its practical application.