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Ceramic materials, renowned for their mechanical strength and environmental stability, face challenges in structural applications due to inherent brittleness and low damage tolerance. Polymer-derived ceramics offer a solution by allowing near-net-shape manufacturing through polymer precursors, overcoming traditional processing limitations. Leveraging polymer additive manufacturing, specifically stereolithographic (SLA) 3D printing, provides versatility in creating complex shapes. We present the formulation of a commercial silicon oxycarbide (SPR 684) for SLA printing, involving the combination of preceramic polymer, a photoinitiator, crosslinkers, and additives. Pyrolysis transforms the printed polymer into a ceramic, comparable in density to conventionally processed samples. Despite quality issues such as porosity, the method is promising for crafting thin features and customized structures, making it ideal for low-cost SLA 3D printing of bioinspired, architected ceramic structures. Computed tomography imaging and compression experiments uncover the role of formulation components in crack initiation and propagation within the 3D-printed ceramics.

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Polymer-Derived Ceramic 3D Printing: Formulation, Pyrolysis, and Structural Insights

  • 会议论文

  • 发表日期：

    2025年

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  • H. Yazdani Sarvestani,
  • A. Sohrabi,
  • T. Lacelle,
  • Y. Martinez-Rubi,
  • M. Jakubinek,
  • B. Ashrafi

摘要

Ceramic materials, renowned for their mechanical strength and environmental stability, face challenges in structural applications due to inherent brittleness and low damage tolerance. Polymer-derived ceramics offer a solution by allowing near-net-shape manufacturing through polymer precursors, overcoming traditional processing limitations. Leveraging polymer additive manufacturing, specifically stereolithographic (SLA) 3D printing, provides versatility in creating complex shapes. We present the formulation of a commercial silicon oxycarbide (SPR 684) for SLA printing, involving the combination of preceramic polymer, a photoinitiator, crosslinkers, and additives. Pyrolysis transforms the printed polymer into a ceramic, comparable in density to conventionally processed samples. Despite quality issues such as porosity, the method is promising for crafting thin features and customized structures, making it ideal for low-cost SLA 3D printing of bioinspired, architected ceramic structures. Computed tomography imaging and compression experiments uncover the role of formulation components in crack initiation and propagation within the 3D-printed ceramics.