| 초록 |
Zirconia has been widely used as bio-implant because of their mechanical properties, chemical stability, and refractoriness. Porous scaffolds with ceramics have been manufactured by variety methods but most of them are complex, costly and inefficient. In this study, porous scaffolds with tetragonal zirconia polycrystal (TZP) were fabricated by using three dimensional rapid direct deposition system (3D-RDD) couple with solvent extraction methods. Solvent extraction process was performed using methylcellulose (MC) in acetone bath and it was demonstrated that feasible successfully. The TZP paste was composed of 3.5wt% of MC solution with distilled water, dispersant (KD-6), and nano-sized TZP powder. In order to optimize the conditions of TZP filaments, composition of TZP, nozzle size were considered. By modifying distance between each filaments, porous of scaffolds were controlled mechanical property in terms of compressive strength would be analyzed. |
