Microwave, a novel clean and efficient sintering method, is firstly used to synthesize zirconia/zircon (ZrO₂/ZrSiO₄) composites ceramics, where the conventional synthesis method is used as a control group. Phase and microstructure of the samples are studied by XRD and SEM. The results show that microwave sintering can synthesize samples with higher density in a shorter time than that of conventional method. Besides, the mechanism of microwave sintering densification is analyzed by first principles calculations. Additionally, first principles calculations are performed to explain the solution of SiO₂ in ZrO₂ matrix to synthesize ZrSiO₄ crystal. The present work opens a new window to synthesize ZrO₂/ZrSiO₄ ceramics which can be used for other ceramic waste forms.

微波是一种清洁高效的新型烧结方法，首先用于合成氧化锆/锆石（ZrO ₂ /ZrSiO ₄）复合陶瓷，其中常规合成方法作为对照组。通过XRD和SEM研究样品的物相和微观结构。结果表明，与传统方法相比，微波烧结可以在更短的时间内合成更高密度的样品。此外，通过第一性原理计算分析了微波烧结致密化的机理。此外，还进行了第一性原理计算来解释SiO ₂在ZrO ₂基体中的溶液以合成ZrSiO ₄晶体。目前的工作打开了合成 ZrO 的新窗口₂ /ZrSiO ₄陶瓷，可用于其他陶瓷废料形式。