Postprocessing Study for the Controllable Structures of Ceramic Green Parts Realized by a Flexible Binder Jetting Printing (BJP) Solution

Table 6

Comparison of final part performances between the integrated processing specimens in Groups VIII and IX and the corresponding reference specimens A and B postprocessed just by sintering.

Item for part performance	Specimen in group VIII^1	Ref. specimen A	Specimen in group IX^1	Ref. specimen B
Relative densities (%)	67.2 ± 1.22	66.4 ± 0.97	70.1 ± 1.15	67.8 ± 1.07
Flexural strength (MPa)	59.6 ± 1.81	59.9 ± 1.36	63.2 ± 1.79	62.6 ± 1.47
Compressive strength (MPa)	436.9 ± 21.33	431.6 ± 18.71	450.2 ± 20.11	435.3 ± 16.35
Surface roughness Ra (μm)	9.55 ± 0.43	16.73 ± 1.23	9.73 ± 0.56	16.01 ± 0.85
Vickers hardness (under 5 kgf, GPa)	4.47 ± 0.18	1.03 ± 0.29	4.58 ± 0.15	1.28 ± 0.39

¹The specimens of Group VIII (IX) were infiltrated with 40 vol% slurry at 1 MPa pressure during the integrated postprocessing procedure.