MgO-1.5Al 2 O 3 透明陶瓷的无压/热等静压烧结制备
Source abstract
Abstract
镁铝尖晶石透明陶瓷是典型的结构功能一体化材料, 具有优异的光学和机械性能。实验合成了颗粒细小、均匀的单相MgO-1.5Al 2 O 3 陶瓷粉末, 并且利用XRD全谱拟合软件Fullprof和尖晶石位置分配程序SIDR两步法确定其晶体结构为(Mg 0.46 Al 0.54 )IV[Mg 0.26 Al 1.64 □ 0.09 ]VIO 4 。再通过真空无压烧结结合热等静压烧结制备出了高性能的透明陶瓷, 热等静压18 MPa下1850℃烧结4 h所得样品的致密度达到99.75%, 厚度为2 mm的烧结样品可见光透过率达到65%, 红外波段透过率达到80%以上, 维氏硬度为(12.75±0.12) GPa, 杨氏模量为277 GPa。
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Magnesium Oxide Properties and Applications · Luminescence Properties of Advanced Materials · Microwave Dielectric Ceramics Synthesis
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