A ceramic composite material has been developed that has the following composition: the corundum matrix is flled with lamellar microparticles of hexa-aluminate lanthanum and is reinforced with alumina nanofbers. All the material’s components were synthesized by the sol–gel method. Analysis of the microstructure composites by scanning electron microscopy has proved the uniform distribution of all components in the matrix. Maximum strengthening of the matrix is attained as a result of the surface modifcation with nanofbers of alumina composition. The material can be used for making structural, refractory and functional ceramics.
FIELD OF APPLICATION
Structural, refractory and functional ceramics MAJOR ADVANTAGES
The composite material modifed by yttrium oxide and prepared by the sol-gel method is synthesized at temperatures 1200–1300ОС, which is 200–300ОС lower than the synthesis temperatures for ceramics prepared by a conventional ceramics technology;
The proposed ceramics is sintered at temperatures 1500-1600ОС, which is 100–200ОС lower than the sintering temperatures of ceramics prepared by a conventional ceramics technology;
The proposed ceramics has a well–formed microstructure with submicrograin crystals; and it shows refractoriness, high bending strength, crack-resistance effciency, wear-resistance and hardness.
