Fig. 1. Schematic diagram of the experimental process.
Fig. 2. X-ray diffraction patterns of ZnS nanoparticles prepared by hydrothermal synthesis at a molar ratio of S/Zn = (a) 0.8, (b) 1.0, (c) 1.2, (d) 1.4, and (e) 1.6 for 20 h at 220℃.
Fig. 3. SEM image of ZnS nanoparticles prepared by hydrothermal synthesis at a molar ratio of S/Zn = (a) 0.8, (b) 1.0, (c) 1.2, (d) 1.4, and (e) 1.6 for 20 h at 220℃.
Fig. 4. Atomic percent of ZnS nanoparticles prepared by hydrothermal synthesis at a molar ratio of S/Zn = 0.8, 1.0, 1.2, 1.4 and 1.6 for 20 h at 220℃.
Fig. 5. Photographs of ZnS ceramics processed by hot-pressing at 850℃ for 2 hours under 30 MPa with various molar ratio S/Zn = (a) 0.8, (b) 1.0, (c) 1.2, (d) 1.4, and (e) 1.6
Fig. 6. Density of ZnS ceramics processed by hot-pressing at 850℃ for 2 hours under 30 MPa with various molar ratio S/Zn = 0.8, 1.0, 1.2, 1.4, and 1.6
Fig. 7. SEM images of ZnS ceramics processed by hot-pressing at 850℃ for 2 hours under 30 MPa with various molar ratio S/Zn = (a) 0.8, (b) 1.0, (c) 1.2, (d) 1.4, and (e) 1.6
Fig. 8. X-ray diffraction patterns of ZnS ceramics processed by hotpressing at 850℃ for 2 hours under 30 MPa with various molar ratio S/Zn = (a) 0.8, (b) 1.0, (c) 1.2, (d) 1.4, and (e) 1.6
Fig. 9. Infrared transmittance of ZnS ceramics processed by hotpressing at 850℃ for 2 hours under 30 MPa with various molar ratio S/Zn = (a) 0.8, (b) 1.0, (c) 1.2, (d) 1.4, and (e) 1.6 (thickness : 1 mm)
Table 1. Infrared transmittance of ZnS ceramics processed by hotpressing at 850℃ for 2 hours under 30 MPa with various molar ratio S/Zn = (a) 0.8, (b) 1.0, (c) 1.2, (d) 1.4, and (e) 1.6 (thickness : 1mm)
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