Yaqian ZHANG, Yugang JIANG, Jingsong RONG, Rongshi ZHANG, Tong ZHANG, [in Chinese]. Effect of annealing treatment on the optical properties and residual stress of MgAl2O4[J]. Infrared and Laser Engineering, 2025, 54(2): 20240414
- Infrared and Laser Engineering
- Vol. 54, Issue 2, 20240414 (2025)
Fig. 1. Annealing process curve of MgAl2O4 transparent ceramic sample
Fig. 2. Optical transmittance curve of annealed MgAl2O4 transparent ceramic sample
Fig. 3. Cross-sectional morphology of MgAl2O4 transparent ceramic samples before and after annealing. (a) Unannealed; (b) Annealed at 1 300 ℃; (c) Annealed at 1 400 ℃; (d) Annealed at 1 500 ℃
Fig. 4. Influence curve of porosity on material transmittance
Fig. 5. Influence curve of pore size on the optical transmittance of the material
Fig. 6. Stress result of the annealed MgAl2O4 transparent ceramic samples
Fig. 7. Raman spectra of MgAl2O4 powder and annealed transparent ceramic samples (excited by 785 nm laser)
Fig. 8. Eg mode Raman peaks and their fitting curves of MgAl2O4 powder and annealed transparent ceramic samples
Fig. 9. Effect of annealing temperature on the drift of Eg mode Raman peak of magnesium-aluminum spinel
Fig. 10. X-ray diffraction spectra of MgAl2O4 powder and annealed transparent ceramic samples
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Table 1. Lattice constants of MgAl2O4 powder and annealed transparent ceramic samples
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