Two types of starting powders were used to synthesis AlON powder via the carbothermal reduction and nitridation (CRN) route, the Al₂O₃ and C mixture, and the Al₂O₃/C core–shell. Al₂O₃/C core–shell resulted in lower carbon content and lower synthesis temperature for CRN method. AlON powder was synthesized using Al₂O₃ and C then was sintered via SPS at 1500, 1600, and 1700°C for 10‐30 min in a vacuum atmosphere. A sample with the highest transmittance was annealed at 1250°C for 2, 4, and 8 h in air. The characteristics of AlON powder and bulk samples were investigated by XRD, DLS, FT‐IR, elemental analysis of carbon and sulfur, SEM, EDS, and UV–Vis spectroscopy analyses. The annealing process for 2 h improved the transmittance from 31% to 58% at the wavelength of 600 nm. AlON powder synthesized using Al₂O₃/C core–shell, was SPSed at 1700°C for 15 min and annealed at 1250°C for 2 h was used to make a sample of 1.7 mm thickness whose transmittance was found to be 81%.

中文翻译：

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通过Al2O3 / C核壳起始粉末​​和CRN法合成SPS制备的高透明AlON。

通过碳热还原和氮化（CRN）路线，使用两种类型的原料粉末合成AlON粉末：Al ₂ O ₃和C的混合物，以及Al ₂ O ₃ / C核-壳。Al ₂ O ₃ / C核-壳导致CRN方法的碳含量降低和合成温度降低。使用Al ₂ O ₃合成AlON粉末然后在真空气氛中通过SPS在1500、1600和1700°C下将C烧结10-30分钟。具有最高透射率的样品在空气中于1250°C退火2、4和8 h。通过XRD，DLS，FT-IR，碳和硫的元素分析，SEM，EDS和UV-Vis光谱分析对AlON粉末和散装样品的特性进行了研究。退火过程2 h在600 nm的波长下将透射率从31％提高到58％。使用Al ₂ O ₃ / C核-壳合成的AlON粉末在1700°C下SPSed 15分钟，并在1250°C退火2 h用于制备1.7 mm厚度的样品，发现其透射率为81％ 。