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<p>Ceramic components fabricated via additive manufacturing are in high demand for biomedical, dental, and MEMS applications due to their superior thermal, mechanical, and biocompatible properties. However, issues like shrinkage, cracking, and poor sintering limit their development. This study introduces a tailored SiO₂-based nanoceramic composite resin tailored for stereolithography (SLA) 3D printing. The resin, comprising nano-silica and a SiO₂-based photopolymer, was optimized through controlled photopolymerization and centrifugal mixing to ensure homogeneous nanoparticle dispersion. Five exposure strategies were evaluated to determine the impact on print quality, sintering behavior, and mechanical properties. The optimal condition (14s normal, 90s bottom exposure) achieved the lowest surface roughness (2.35&#xa0;μm), minimal shrinkage (5.63%), highest ceramic density (1.39&#xa0;g/cm³), and tensile strength (41.6&#xa0;MPa). SEM and EDS confirmed uniform nanoparticle dispersion and effective polymer burnout. The results demonstrate a scalable approach to fabricating high-performance nanoceramics, offering valuable insights for the production of mechanically robust, low-shrinkage ceramic components.</p>

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High-performance SiO₂-based nanoceramic composites via stereolithography: process optimization, microstructural evolution, and functional characterization

  • 期刊论文

  • 发表日期：

    2026年2月25日

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  • Nabeel Maqsood,
  • Karolis Stravinskas,
  • Greta Merkininkaitė,
  • Oleksandr Kapustynskyi ,
  • Romuald Petkevič,
  • Simas Šakirzanovas,
  • Genrik Mordas

摘要

Ceramic components fabricated via additive manufacturing are in high demand for biomedical, dental, and MEMS applications due to their superior thermal, mechanical, and biocompatible properties. However, issues like shrinkage, cracking, and poor sintering limit their development. This study introduces a tailored SiO₂-based nanoceramic composite resin tailored for stereolithography (SLA) 3D printing. The resin, comprising nano-silica and a SiO₂-based photopolymer, was optimized through controlled photopolymerization and centrifugal mixing to ensure homogeneous nanoparticle dispersion. Five exposure strategies were evaluated to determine the impact on print quality, sintering behavior, and mechanical properties. The optimal condition (14s normal, 90s bottom exposure) achieved the lowest surface roughness (2.35 μm), minimal shrinkage (5.63%), highest ceramic density (1.39 g/cm³), and tensile strength (41.6 MPa). SEM and EDS confirmed uniform nanoparticle dispersion and effective polymer burnout. The results demonstrate a scalable approach to fabricating high-performance nanoceramics, offering valuable insights for the production of mechanically robust, low-shrinkage ceramic components.