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Additive manufacturing has emerged as a promising method for creating intricate structures using a variety of materials, including metals, polymers, and ceramics. Direct Ink Writing (DIW) has proven to be particularly valuable for efficiently and affordably producing ceramic components with complex geometries. This study investigates how printing parameters impact the effectiveness of Al2O3 refractory product fabrication via DIW. Specifically, a 95% alumina (Al2O3) mixture with low viscosity and high solid loading is employed for DIW 3D printing, utilizing 4% polyvinyl acetate (PVA) and 1% hydroxypropyl methylcellulose (HPMC) water-based solutions as binders. The resulting components are sintered in a furnace based on thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC) findings. Rheological analysis confirms the printability of the prepared slurry. X-ray diffraction (XRD) identifies the presence of Al2O3, PVA, and HPMC elements, while scanning electron microscopy (SEM) images illustrate the bonding between PVA, HPMC, and Al2O3.

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Additive Manufacturing of Al2O3 Ceramic Components: Rheological and Microstructural Characterization

  • 会议论文

  • 发表日期：

    2025年

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  • Rupendra Singh Tanwar,
  • Swaraj Sarkar,
  • M. Vignesh,
  • Suyog Jhavar

摘要

Additive manufacturing has emerged as a promising method for creating intricate structures using a variety of materials, including metals, polymers, and ceramics. Direct Ink Writing (DIW) has proven to be particularly valuable for efficiently and affordably producing ceramic components with complex geometries. This study investigates how printing parameters impact the effectiveness of Al2O3 refractory product fabrication via DIW. Specifically, a 95% alumina (Al2O3) mixture with low viscosity and high solid loading is employed for DIW 3D printing, utilizing 4% polyvinyl acetate (PVA) and 1% hydroxypropyl methylcellulose (HPMC) water-based solutions as binders. The resulting components are sintered in a furnace based on thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC) findings. Rheological analysis confirms the printability of the prepared slurry. X-ray diffraction (XRD) identifies the presence of Al2O3, PVA, and HPMC elements, while scanning electron microscopy (SEM) images illustrate the bonding between PVA, HPMC, and Al2O3.