At present, the formation conditions of cordierite were relatively harsh, the formation temperature was close to the decomposition temperature, and it was difficult to control the sintering temperature. In order to solve the problem of cordierite synthesis, cordierite powders were synthesized by chemical coprecipitation–rotation evaporation and solid reaction sintering. The thermodynamics, thermal analysis, phase composition, specific surface area, morphology, and grain size distribution of the samples sintered at different temperatures were systematically studied. SEM micrographs showed that the crystal structural evolution of cordierite was divided into three processes; the temperatures of 1000 °C (the formation of hexagonal flake–like grain) and 1200 °C (the formation of flaky texture grain) were two important sintering transition points. The specific surface area of the sample sintered at 1400 °C was 1.76 m²/g, and the grain size was well developed with the range of 196.5–222.7 nm. Phase analysis revealed that the main crystal phase of samples sintered at 1200 °C was cordierite phase and a little spinel phase and mullite phase, and the peak intensity of the characteristic peaks at 1400 °C was more intense.

目前，堇青石的形成条件比较苛刻，形成温度接近分解温度，难以控制烧结温度。为了解决堇青石的合成问题，通过化学共沉淀-旋转蒸发和固相反应烧结法合成了堇青石粉末。系统地研究了在不同温度下烧结的样品的热力学，热分析，相组成，比表面积，形貌和晶粒尺寸分布。扫描电镜观察表明，堇青石的晶体结构演化分为三个过程。烧结的两个重要转变点是1000°C（六角形片状晶粒的形成）和1200°C（片状纹理粒的形成）。² / g，并且晶粒尺寸在196.5–222.7 nm范围内发育良好。相分析表明，在1200°C烧结的样品的主晶相为堇青石相，少量尖晶石相和莫来石相，在1400°C时特征峰的峰强度更强。