Fig. 1. Schematic of experimental platform

Fig. 2. DSC curve of coated ceramsite

Fig. 3. Schematic of compound scanning method

Fig. 4. Beam analysis results

Fig. 5. Shapes and sizes of samples for accuracy test. (a) Hollow cube sample; (b) cantilever structural sample

Fig. 6. Relationship between laser energy density and tensile strength of sintered sample

Fig. 7. Fracture morphology of tensile samples prepared at different energy densities. (a) 0.10 J·mm-2; (b) 0.21 J·mm-2; (c) 0.26 J·mm-2; (d) 0.42 J·mm-2

Fig. 8. Top view of measuring carbonation width

Fig. 9. Relationship between energy density and carbonization width or carbonization depth

Fig. 10. Images of samples used for sintering precision measurement. (a) Top view of sample sintered by conventional scanning method; (b) side view of sample prepared by conventional scanning method; (c) top view of sample sintered by composite scanning method; (d) side view of sample sintered by composite scanning method; (e) experimental sample after stripping secondary sinter

Fig. 11. 3D scanning images of samples used for sintering precision measurement. (a) Side scanning image of sample sintered by conventional scanning method; (b) bottom scanning image of sample sintered by conventional scanning method; (c) side scanning image of sample sintered by composite scanning method; (d) bottom image of sample sintered by composite scanning method

Fig. 12. Relationship between laser energy density and forming precision or tensile strength. (a) Inside; (b) outside; (c) bottom

Fig. 13. Deformation of cantilever samples with different pre-sintered strength after post-treatment. (a) 0.25 MPa; (b) 0.80 MPa