Direct deposition of graphene nanowalls on ceramic powders for the fabrication of a ceramic matrix composite
Zhou Hai-Tao1, Liu Da-Bo1, Luo Fei1, Tian Ye1, Chen Dong-Sheng1, Luo Bing-Wei1, †, Zhou Zhang2, Shen Cheng-Min2, ‡
       

(a) Schematic illustration of PECVD system. (b) Photographs of Al2O3 powder before (left) and after (right) GNWs deposition. (c) Raman spectrum. (d) XPS of GNWs/Al2O3 powder. (e) Low-magnification SEM image showing overall view of Al2O3 particles. (f) High-magnification image showing GNWs on the particle. Graphene deposition parameter: 700 °C, 290 W, 90 min.