| Texto completo | |
| Autor(es): |
Morais, Mateus Mota
;
de Camargo, Italo Leite
;
Colombo, Paolo
;
Fortulan, Carlos Alberto
Número total de Autores: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | OPEN CERAMICS; v. 14, p. 12-pg., 2023-03-28. |
| Resumo | |
Although calcium carbonate is more commonly used in powder form, it could have exciting applications in bulk form, such as bone scaffolds, synthetic corals, and artificial rocks. Additive manufacturing (vat-photopolymerization) is a promising strategy for producing parts with complex geometries. However, two main challenges arise: 1) Producing a CaCO3 suspension with high solid loading and low viscosity suitable to ordinary bottom-up 3D printers; 2) Debinding and sintering the CaCO3 parts without causing their thermal decomposition. The first challenge was addressed by following a systematic methodology to select the monomer and dispersant, resulting in a printable 35 vol% CaCO3 suspension with low viscosity (0.28 Pa s at 30s-1). The second challenge was overcome by debinding in air atmosphere to remove all organics, followed by sintering in CO2 above 500 degrees C to avoid the calcination of CaCO3. The presented results are an important advance for the fabrication of calcium carbonate parts with complex geometries. (AU) | |
| Processo FAPESP: | 20/16012-1 - Fabricação de core plugs cerâmicos com porosidade multiescala |
| Beneficiário: | Mateus Mota Morais |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 21/12556-0 - Manufatura aditiva de amostras de carbonato de cálcio com porosidade multiescala |
| Beneficiário: | Mateus Mota Morais |
| Modalidade de apoio: | Bolsas no Exterior - Estágio de Pesquisa - Doutorado |