| 초록 |
Among many kinds of infrared transparent ceramics, the Y2O3-MgO nanocomposite is one of the most promising candidates to meet the requirements of excellent IR transparency and strength. Since this nanocomposite has a large difference in refractive index between its two phases, minimizing the grain size is important to obtain transparency in the near-infrared region. In addition, the outstanding mechanical and thermal properties is essential to apply in harsh environment. We studied the effect of the microstructure of Y2O3-MgO nanocomposite on the thermal and mechanical characteristics with high transmittance. Grain coarsening was suppressed by using the hot-press method, through which small grains with enhanced mechanical and thermal performance was produced. In addition, the thermal and mechanical performance of rare-earth ions doped Y2O3-MgO nanocompsite was investigated. |
