A series of graphene/transition metal oxides (TMOs) composites films were prepared through an electrostatic self-assembly method. The graphene oxide (GO) sheets were decorated with Co3O4, LaCoO3, SrTiO3, NiCo2O4 and NiMoO4...

In this work, the Nextel 720 continuous fiber reinforced alumina ceramic matrix composites (CMCs) were prepared by an improved prepreg process. The alumina matrix was derived from aqueous slurry, which consisted of organic glue, alumina sol, nanometer alumina powders, and micrometer alumina powders. This design provided a densely packed matrix for the CMC, and made the whole process relatively simple. The ratio of different alumina components in aqueous slurry was optimized to obtain good sintering activity, high thermal resistance, and excellent mechanical properties simultaneously. Furthermore, a preceramic polymer of mullite was used to strengthen the ceramic matrix through a multiple infiltration process. The final CMC sample achieved a high flexural strength of 255 MPa and a good high‐temperature stability. After 24 h of heat treatment at 1100°C, 85% of the maximum flexural strength still had been retained.