Abstract Scope |
In this work, for the first time, a binder jetting process was used to fabricate textured ceramics. This was achieved by using the mixture of alumina nanoparticles and nanoplatelets as the feedstock powder. The fraction of nanoplatelets in the feedstock powder was varied across 0 wt.%, 1 wt.%, 5 wt.%, 10 wt.%, 15 wt.%, 25 wt.%, and 50 wt.%. Green samples were prepared with a lab-design machine for compaction-assisted binder jetting. In this machine, the feedstock powder was spread and compacted layer by layer. Then the green samples were sintered in a furnace. The green density, sintered density, and sintering shrinkage were measured. Furthermore, a scanning electron microscope and X-ray diffractometer were used to investigate the degree of texture in the sintered parts. The results showed that increasing the fraction of nanoplatelets increased the degree of texture; however, this increase led to a decline in the sintered density. |