TY - JOUR
T1 - Fabrication of Al2O3 ceramic cores with high porosity and high strength by vat photopolymerization 3D printing and sacrificial templating
AU - Zhai, Xiaofei
AU - Chen, Jingyi
AU - Wang, Yaru
AU - Su, Ruyue
AU - Gao, Xiong
AU - Zhang, Xueqin
AU - Jin, Hua
AU - He, Rujie
N1 - Publisher Copyright:
© 2023 Elsevier Ltd and Techna Group S.r.l.
PY - 2023/10/1
Y1 - 2023/10/1
N2 - When preparing ceramic materials, high porosity and high strength are often played against each other. How to balance porosity and strength has become a core issue in the 3D printing of ceramic cores. In this work, alumina ceramic cores with a high porosity (36.93%) and a high flexural strength (75.4 MPa) were prepared by combining the vat photopolymerization 3D printing with sacrificial templating. The porosity of alumina ceramic cores was improved by the sacrificial templating method, and the flexural strength was enhanced with alumina particle grading. The effects of pore former (PMMA) content and particle size on the shrinkage, porosity, microstructure, and comprehensive performance of alumina ceramic cores were investigated to reveal the mechanism of simultaneous high porosity and high strength.
AB - When preparing ceramic materials, high porosity and high strength are often played against each other. How to balance porosity and strength has become a core issue in the 3D printing of ceramic cores. In this work, alumina ceramic cores with a high porosity (36.93%) and a high flexural strength (75.4 MPa) were prepared by combining the vat photopolymerization 3D printing with sacrificial templating. The porosity of alumina ceramic cores was improved by the sacrificial templating method, and the flexural strength was enhanced with alumina particle grading. The effects of pore former (PMMA) content and particle size on the shrinkage, porosity, microstructure, and comprehensive performance of alumina ceramic cores were investigated to reveal the mechanism of simultaneous high porosity and high strength.
KW - Alumina ceramic cores
KW - High porosity
KW - High strength
KW - Sacrificial templating
KW - Vat photopolymerization 3D printing
UR - http://www.scopus.com/inward/record.url?scp=85165718171&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2023.07.177
DO - 10.1016/j.ceramint.2023.07.177
M3 - Article
AN - SCOPUS:85165718171
SN - 0272-8842
VL - 49
SP - 32096
EP - 32103
JO - Ceramics International
JF - Ceramics International
IS - 19
ER -