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首页> 外文期刊>Journal of the European Ceramic Society >Advanced spinel ceramics with highest VUV-vis transparency
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Advanced spinel ceramics with highest VUV-vis transparency

机译：具有最高VUV-VIS透明度的高级尖晶石陶瓷

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摘要

Synthesis of optical grade spinel ceramics superior to commercially available single crystal spinel was successfully achieved through reactive sintering between high purity MgO and Al2O3 powders with a small amount of MgF2 and AIF(3) as sintering aids. The average grain size of the fabricated spinel ceramics was approximately 20 mu m, with residual porosity at the 10(-13) level. The transmission characteristics from the visible to infrared region of the spinel ceramics (optical loss:0.1 %/cm) are equal to or higher than those of the single crystal spinel produced by the Czochralski method. Since the optical homogeneity of the ceramics is extremely high, the beam quality of the laser transmitted through the material did not degrade. The optical band gaps of spinel ceramics and single crystals are 6.81 eV and 5.51 eV respectively. However, polycrystalline ceramics showed excellent characteristics especially in the vacuum ultraviolet wavelengths below 200 nm where single crystals are difficult to transmit.
机译：通过高纯度MgO和Al2O3粉末之间的反应烧结，成功地实现了优于市售单晶尖晶石的光学级尖晶石陶瓷的合成通过含有少量MgF 2和AIF（3）作为烧结助剂。制造的尖晶石陶瓷的平均晶粒尺寸约为20μm，10（-13）水平的残余孔隙率。来自尖晶石陶瓷的红外区域（光学损耗：0.1％/ cm）的可见光的传输特性等于或高于Czochralski方法生产的单晶尖晶石的传输特性。由于陶瓷的光学均匀性极高，因此通过材料传递的激光的光束质量不会降低。尖晶石陶瓷和单晶的光带间隙分别为6.81eV和5.51eV。然而，多晶陶瓷显示出优异的特性，特别是在低于200nm的真空紫外波长中，其中单晶难以传递。

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