Mullite ceramics was synthesized using boehmite (-AlOOH) as alumina source and polymethysilsesquioxanes (PMS), a novel class of preceramic polymer, as silica source. Quantitative mullitization was calculated from the X-ray diffractograms of powder samples of appropriate stoichiometry of the precursors calcined for various holding times between 1200o and 1300oC, using Rietveld analysis, and the kinetics of phase formation was studied. The rate constant and activation energy of mullitization was calculated by the Johnson-Mehl-Avrami equation. This approach holds great potential for the commercial use of polymeric silica precursor for the fabrication of highly pure mullite and other silicate systems for various application such as thermal and environmental barrier coatings.

莫来石陶瓷是用勃姆石（α-AlOOH）作为氧化铝源和新型甲基化的陶瓷基倍半硅氧烷（PMS）作为二氧化硅源来合成的。使用Rietveld分析方法，根据在1200o和1300oC之间各种保持时间煅烧的前驱体的化学计量合适的粉末样品的X射线衍射图计算出定量mulilation，并研究了相形成的动力学。通过Johnson-Mehl-Avrami方程计算出了乳化的速率常数和活化能。这种方法在聚合物二氧化硅前体的商业用途上具有巨大的潜力，可用于制造高纯度的莫来石和其他硅酸盐体系，以用于各种用途，例如热障涂层和环境屏障涂层。