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Robocasting as an Additive Manufacturing Method for Oxide Ceramics: A Study of Mechanical Properties and
Szymon Przybyła1,2, Maciej Kwiatkowski2, Michał Kwiatkowski2
1Faculty of Materials Engineering and Physics, Cracow University of Technology, Warszawska 24, 31-155 Kraków, Poland.
Materials (Basel, Switzerland)
|October 29, 2025
Summary
Additive manufacturing using robocasting offers a high-performance alternative for producing complex ceramic components. This 3D printing technology achieves mechanical properties comparable to traditional methods with reduced porosity.
Area of Science:
- Materials Science
- Manufacturing Engineering
Background:
- Additive manufacturing (AM) presents an innovative alternative to conventional production for heavy industry components, especially in foundries.
- Robocasting, a type of direct ink writing (DIW), is an AM technique suitable for ceramic processing, enabling complex geometries.
Purpose of the Study:
- To characterize the material properties of ceramic filters produced via robocasting.
- To compare the performance of robocast alumina (Al2O3) with conventionally manufactured ceramics.
Main Methods:
- Robocasting (direct ink writing) was used to fabricate ceramic filters.
- Material characterization included phase composition, density, three-point bending strength, hardness, and microstructural analysis.
Main Results:
- Robocast Al2O3 demonstrated comparable mechanical performance to components made by slip casting, ceramic injection molding, and dry pressing.
- The robocasting process resulted in lower post-sintering porosity compared to conventional methods.
Conclusions:
- Additive manufacturing, specifically robocasting, is a viable technology for producing high-performance ceramic components for industrial applications.
- This method allows for enhanced precision, geometric complexity, and improved material properties like reduced porosity.
