Addditive Manufacturing of Structured Ceramics using Lithography-Based Ceramic Manufacturing (LCM) Technique
DUNTU S. 1, BOAKYE-YIADOM S. 1
1 York University, Toronto, Canada
Additive manufacturing (AM) or three-dimensional (3D) printing has revolutionized the manufacturing industries in recent times. In addition to high throughput and cost minimization, the AM process offers high geometric freedom for intricate structures. Despite the enormous impact of AM in the polymer and metal industries, the integration of AM (3D printing) in ceramic structures has not received much exposure due to current issues including processing route with AM and discrepancy in properties as compared to a conventionally produced parts. In the current work, an approach has been made to manufacture high dense ceramic structures using a lithography-based technique. The lithography-based ceramic manufacturing (LCM) process uses polymerization principle, which involves selective curing of a photosensitive slurry composed of dispersed ceramic powder within a polymer matrix to achieve ceramic green parts layer-by-layer using a photolithographic process, followed by debinding and final sintering to achieve the dense ceramic parts. Alumina, Yttria Stabilized Zirconia (YSZ) and Zirconia Toughened Alumina (ZTA) ceramic structures were produced using this novel LCM process. The effect of printing parameters such as build direction and layer thickness during the printing process on the evolving microstructure of the AM-built ceramics were studied. Wear properties of the produced ceramic AM parts were also determined to assess their tribological integrity and performance as biomaterials.