10 Laser Scanning Stereolithography
311
Fig. 10.9 Fluid streamlines
in continuous and connected
cavities to disperse
biological fluid flows for
osseointegration as natural
metabolism
Fig. 10.10 Biological
ceramic components of
sintered hydroxyapatite
lattices with a high relative
density and fine
microstructure
The precursor was dewaxed at 600 °C for 2 h at a heating rate of 1.0 °C/min and
sintered at 1250 °C for 2 h at a rate of 5.0 °C/min in air. The sintered scaffold of
the hydroxyapatite ceramic with graded lattices is shown in Fig. 10.10. The linear
shrinkage ratios for the horizontal and vertical axes were 23 and 25%, respectively.
Smaller lattice structures could be obtained through controlled body shrinkages
during the optimized sintering process. In the ceramic microstructure of sintered
hydroxyapatite, cracks and pores were absent. The grain size was approximately
4 µm, and the relative densities of these ceramic components were measured as 99%
using the Archimedean method.
10.6 Conclusions
The fabrication of practical material components with functional geometries by laser
scanning stereolithography was demonstrated. Dendritic electrodes composed of
yttria-stabilized zirconia and nickel oxide were successfully processed. Ceramic
electrodes with large effective reaction area can exhibit smooth fuel gas transparent
characteristics to promote effective anode reactions. Metallodielectric photonic crystals composed of metallic glass particles dispersed in an oxide glass matrix were
processed. The artificial crystals formed are expected to be used in real-time sensing
of harmful substances in the aqueous phase environments. Hydroxyapatite scaffolds of four-coordinate lattices with graded porosities were processed. The designed
311
Fig. 10.9 Fluid streamlines
in continuous and connected
cavities to disperse
biological fluid flows for
osseointegration as natural
metabolism
Fig. 10.10 Biological
ceramic components of
sintered hydroxyapatite
lattices with a high relative
density and fine
microstructure
The precursor was dewaxed at 600 °C for 2 h at a heating rate of 1.0 °C/min and
sintered at 1250 °C for 2 h at a rate of 5.0 °C/min in air. The sintered scaffold of
the hydroxyapatite ceramic with graded lattices is shown in Fig. 10.10. The linear
shrinkage ratios for the horizontal and vertical axes were 23 and 25%, respectively.
Smaller lattice structures could be obtained through controlled body shrinkages
during the optimized sintering process. In the ceramic microstructure of sintered
hydroxyapatite, cracks and pores were absent. The grain size was approximately
4 µm, and the relative densities of these ceramic components were measured as 99%
using the Archimedean method.
10.6 Conclusions
The fabrication of practical material components with functional geometries by laser
scanning stereolithography was demonstrated. Dendritic electrodes composed of
yttria-stabilized zirconia and nickel oxide were successfully processed. Ceramic
electrodes with large effective reaction area can exhibit smooth fuel gas transparent
characteristics to promote effective anode reactions. Metallodielectric photonic crystals composed of metallic glass particles dispersed in an oxide glass matrix were
processed. The artificial crystals formed are expected to be used in real-time sensing
of harmful substances in the aqueous phase environments. Hydroxyapatite scaffolds of four-coordinate lattices with graded porosities were processed. The designed