Year: 2022
Type: article
Abstract: With the developments in manufacturing technologies, interest on porosity graded alumina ceramics has increased for applications such as thick barrier coating, cores for precision casting and biocompatible implants. Lithography-based Ceramic Manufacturing (LCM) offers high quality and near-net manufacturing of complex ceramic components with high resolution. Multi-material LCM printing setup can overcome the main problems of conventional manufacturing techniques for fabrication of porosity graded alumina with desired microstructure and gradient architecture (i.e., gradient direction, fraction, type). Two-vat system in the newly developed multi-material LCM printer setup enables not only assigning one material to any desired layer but also use of different materials in each layer by assigning the respective materials to selected pixels of the layer image. This article introduces methodologies for the fabrication of porosity gradient alumina with continuous and discrete porosity transitions zones by combining sacrificial templating and LCM. It is illustrated how the properties of the slurry and the desired gradient architecture play an important role for the selection of suitable method.
Source: Additive Manufacturing Letters
Authors: Serkan Nohut, Sebastian Geier, Irina Kraleva, Martin Schwentenwein, Raul Bermejo
Institutions: Piri Reis University, Montanuniversität Leoben
Language: English
Subfield: Industrial and Manufacturing Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,250
Awards: G210728679, G3345895242, G3562849098, G3586270630, G434337789, G4495409851, G4753272321, G4937468798, G5371609813, G5783601166, G6329715174, GraCerLit – Development of Functionally Graded Ceramics by Lithography-based Ceramic Manufacturing (LCM), G7702813028, Tailoring Microstructure and Architecture to Build Ceramic Components with Unprecedented Damage Tolerance, G7944295140, G8512683158
OpenAlex ID: W4281263151