AI Article Synopsis
- Current techniques for shaping ceramics, particularly piezoceramics, are slow and can compromise their properties, highlighting the need for more effective methods.
- The proposed ultrafast shaping and sintering (USS) method uses thermomechanical fields to rapidly deform and shape ceramic powder compacts, employing a programmable carbon-felt Joule heater that also provides mechanical support.
- This USS method allows for the creation of complex 3D shapes, such as twisted and arched designs, and is both energy-efficient and time-efficient, performing tasks in just a few minutes with minimal energy consumption.
Article Abstract
Shaping of ceramics is crucial. Current techniques cannot easily and rapidly shape ceramics without weakening their properties, especially for piezoceramics. We present an ultrafast ceramic shaping method that leverages thermomechanical fields to deform and sinter ceramic powder compacts into complex-shaped ceramics. The shape-forming process hinges on: (1) the implementation of a precise thermal field to activate optimal deformability, and (2) the application of sufficient mechanical loads to guide deformation. We employ a programmable carbon-felt Joule heater that concurrently function as mechanical carriers, effectively transferring applied loads to the ceramic powder compacts. Using this ultrafast shaping and sintering (USS) method, we fabricate barium titanate (BT) piezoceramics in twisted shape, arch shape and with micropatterns. The USS method is energy-friendly (requiring approximately 1.06 kJ mm) and time-efficient (in several minutes level). Overall, the USS method offers an effective solution for shaping ceramics and extends them to 3D geometries with enhanced versatility.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11574009 | PMC |
| http://dx.doi.org/10.1038/s41467-024-54393-w | DOI Listing |
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