Abstract—

We have studied the effect of hot pressing conditions on the microstructure and optical characteristics of Y₂O₃–MgO composite ceramics. The hot pressing conditions have been optimized so as to minimize scattering of IR radiation in the range 4–5 μm by residual pores and crystallites of the composite. Annealing the Y₂O₃–MgO ceramics in air at a temperature of 1100°C for 5 h has been shown to eliminate the absorption band peak at ~4.94 μm arising from carbon monoxide captured in residual pores.

中文翻译：

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热压条件对MgO-Y2O3复合陶瓷显微结构和光学性能的影响

摘要——

我们研究了热压条件对 Y ₂ O ₃ -MgO 复合陶瓷的微观结构和光学特性的影响。热压条件已经过优化，以最大程度地减少复合材料残余孔和微晶对 4-5 μm 范围内的红外辐射的散射。在空气中将 Y ₂ O ₃ -MgO 陶瓷在 1100°C 的温度下退火 5 小时已被证明可以消除由残留孔隙中捕获的一氧化碳引起的~4.94 μm 处的吸收带峰。