Mechanical performance of lightweight ceramic structures via binder jetting of microspheres
Open Access
- 2 March 2021
- journal article
- research article
- Published by Springer Science and Business Media LLC in SN Applied Sciences
Abstract
Geometrically-complex and lightweight ceramic parts manufactured via 3D printing are prospective structures that seem to provide excellent thermal, wear and dielectric performance. In the present work, binder jetted parts based on synthetic lightweight ceramic hollow microspheres were manufactured and evaluated under different testing conditions in order to characterize their mechanical performance. The resulting structures were assessed in terms of quasi-static flexural and compressive strength, and density. Furthermore, microscopy analyses highlighted the composition of the final structures and fracture mechanisms. The printed system mainly consisted of aluminum silicon dioxide, fly ash and traces of metal. The samples yielded similar strength as that achieved on conventional bulk-based 3D printed ceramic structures. It was observed that the strength of the printed microspheres increased by sintering the parts to near-fusion temperatures due to viscous flow of material during sintering. The combination of the proposed process and feedstock represents an attractive manufacturing method for fabricating lightweight structures for applications like composite tooling molds, electromagnetic devices, and biomedical implants.Keywords
This publication has 53 references indexed in Scilit:
- Net shaped high performance oxide ceramic parts by selective laser meltingPhysics Procedia, 2010
- Processing of Bulk Alumina Ceramics Using Laser Engineered Net ShapingInternational Journal of Applied Ceramic Technology, 2008
- Novel Mullite Synthesis Based on Alumina Nanoparticles and a Preceramic PolymerJournal of the American Ceramic Society, 2006
- Fabrication of Al2O3-based composites by indirect 3D-printingMaterials Letters, 2006
- Basic Properties of MullitePublished by Wiley ,2005
- Ceramics FoamsPublished by Wiley ,2005
- Direct Ink‐Jet Printing of Vertical WallsJournal of the American Ceramic Society, 2002
- Effect of Oxygen Vacancies on the Hot Hardness of MulliteJournal of the American Ceramic Society, 2001
- Fabrication of Mullite and Mullite‐Matrix Composites by Transient Viscous Sintering of Composite PowdersJournal of the American Ceramic Society, 1991
- Fabrication and Mechanical Properties of Lightweight Ceramics Produced by Sintering of Hollow SpheresJournal of the American Ceramic Society, 1985