| abstract |
The invention provides a preparation method and application of an HfC ceramic precursor.The preparation method includes the steps of firstly, adding solvent into a reactor, adding organic hafnium compound and cyanamide organic matter, and vacuumizing and drying the reactor; secondly, rising the temperature, performing continuous stirring reaction under the protection of nitrogen atmosphere, and evaporating the reaction products to remove the solvent so as to obtain white solid.The HfC ceramic precursor prepared by the method is high in ceramic yield, good in high-temperature resistance and suitable for being used to prepare high-performance hafnium carbide ceramics and composite materials thereof, and the ultrahigh-temperature HfC component content of the ceramic materials prepared by the HfC ceramic precursor is higher than 79%. |