| A multistage de-binding approach for material extrusion-based additively manufactured fabricated zirconia ceramics |
| Subham Kumar Pandey, Amit Rai Dixit |
| Department of Mechanical Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, 826004, India |
|
|
|
Received: August 6, 2024; Revised: November 15, 2024 Accepted: January 19, 2025. Published online: February 18, 2025. |
|
|
|
| ABSTRACT |
|
Material extrusion-based fused filament fabrication (FFF) offers a straightforward and cost-effective method for ceramic additive manufacturing (AM) compared to other techniques. It involves FFF printing, de-binding, and sintering to create intricate ceramic components. De-binding is crucial and time-intensive in this process. Various partial de-binding methods remove binders before thermal de-binding (TDB), ensuring defect-free ceramics. This study explores multistage de-binding for three mol% yttria-stabilized zirconia ceramic filaments. Solvent de-binding (SDB) and Wick de-binding (WDB) were tested alongside TDB. Two-stage de-binding methods (SDB + TDB, WDB + TDB) and a three-stage method (SDB + WDB + TDB) were compared. WDB showed cracks and distortion, indicating suboptimal results in WDB + TDB. The three-stage approach (SDB + WDB + TDB) removed 99.52% of polymer binders, 1.93% more than the two-stage (SDB + TDB). Densification was comparable: 99.31% (two-stage) and 99.48% (three-stage), highlighting the three-stage method's potential for superior binder removal without compromising density. |
| Key words:
Multistage de-binding · Material extrusion · Zirconia |
|
|
|
PDF Links 
Full text via DOI
Download Citation 
