Synthesis of nitrogen ceramics from a new vermiculite–polyacrylonitrile intercalation compound by carbothermal reduction
Abstract
In the preparation of Si–M–O–N ceramics (M = Al, Mg), liquid acrylonitrile was intercalated in an alkylammonium vermiculite, polymerized in situ and carboreduced under a nitrogen flow. Magnesium silicon nitride, β-silicon nitride and β-sialon with fibre morphology were produced at 1400 °C.