Unmet Need
Additive manufacturing (AM) provides a method to generate layer-by-layer ceramics with complex geometries without the need for molds. Traditional methods for generating refractory ceramics require costly mold tooling for low production volumes, and these methods may result in materials lacking the required thermal, mechanical, and chemical properties. Therefore, there is a strong need for a single-step additive manufacturing process that maintains desired properties including structural integrity at high temperatures and a near-net shape result.
Technology Description
Researchers at Johns Hopkins have developed an AM-based technique that utilizes selective laser sintering with metal/metalloid precursors to reduce the volume changes and loss of structural integrity associated with current methods.
Value Proposition
· Wide range of material applications including ultra-high temperature ceramics, which cannot be produced with previous methods.
· High temperature refractory materials can be produced using AM without major changes in structural and mechanical characteristics.
· Lower laser intensities and lower sintering temperatures can be used to generate desired result.
· Complex geometries can be produced through controlled porosities.
Stage of Development
· Proof of concept study is complete. Study exemplifies effective compositions of metal and metalloid precursors that result in near-net shapes of selective laser-sintered AM refractory materials.
Data Availability
Data available upon request.
Publication
Peters et al. Ceramics International (2023). https://www.sciencedirect.com/science/article/pii/S0272884222043565
