Rationally-designed self-shaped ceramics through heterogeneous green body compositions.
Mater Horiz
; 9(11): 2762-2772, 2022 10 31.
Article
em En
| MEDLINE
| ID: mdl-35983874
ABSTRACT
Forming ceramics into rationally-designed and complex shapes without compromising their mechanical properties is a major challenge. Here, we demonstrate self-shaping of ceramics through sequential stereolithographic printing of ceramic resins into components with a heterogeneous concentration of ceramic particles, resulting in well-defined anisotropic shrinkage and, consequently, shape changes during sintering. The method is versatile and scalable and results in well-controlled shape changes in ceramics through bending, folding, twisting, and combinations of these mechanisms. The density measurements and mechanical tests show that the stresses resulting from the self-shaping mechanisms do not significantly affect the physical and mechanical properties of the ceramics. Together with the experiments, we developed a material- and scale-independent mechanical model based on linear elasticity that predicted shape changes accurately. The model can serve as a design tool to guide the selection of particle concentrations to realize the desired shapes in a broad range of ceramics.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Cerâmica
/
Impressão Tridimensional
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
Mater Horiz
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
Austrália