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In this study, digital light processing (DLP) was employed to 3D print ceramics based on alumina (Al2O3) for evaluating their reciprocating wear behavior. The investigation focused on the influence of different surface orientations with respect to the build plate, each with a constant layer thickness of 25 μm. The effects of layer thickness were studied on the worst performing sample. Sintered Al2O3 components underwent wear tests perpendicular to the individual layers. Wear tests, conducted with a β-Si3N4 counter face sphere under loads of 40 and 60 N, revealed that samples with the intermediate build angle demonstrated the lowest coefficient of friction. Microstructural analysis disclosed cracking/spalling damage and the formation of a tribolayer in 3D-printed ceramic samples. Further findings from this research highlight the crucial design considerations when utilizing additive manufacturing (AM) technologies for producing ceramic wear components, offering valuable insights into optimizing wear performance.

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The Reciprocating Wear Response of Additively Manufactured, Al2O3-Based Ceramics Produced Using Digital Light Processing

  • 会议论文

  • 发表日期：

    2025年

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  • Achilles M. David,
  • Mark Y. Amegadzie,
  • Kevin P. Plucknett

摘要

In this study, digital light processing (DLP) was employed to 3D print ceramics based on alumina (Al2O3) for evaluating their reciprocating wear behavior. The investigation focused on the influence of different surface orientations with respect to the build plate, each with a constant layer thickness of 25 μm. The effects of layer thickness were studied on the worst performing sample. Sintered Al2O3 components underwent wear tests perpendicular to the individual layers. Wear tests, conducted with a β-Si3N4 counter face sphere under loads of 40 and 60 N, revealed that samples with the intermediate build angle demonstrated the lowest coefficient of friction. Microstructural analysis disclosed cracking/spalling damage and the formation of a tribolayer in 3D-printed ceramic samples. Further findings from this research highlight the crucial design considerations when utilizing additive manufacturing (AM) technologies for producing ceramic wear components, offering valuable insights into optimizing wear performance.