Effect of the Nature of Carbon Nanotubes on the Structure and Strength of Ceramic Composites

A composite material based on alpha -Al2O3 and two types of carbon nanotubes obtained from a methane-hydrogen mixture and propane-butane mixture was synthesized. The results of vacuum sintering and a comparative analysis of the structure of the material obtained as a function of the type of nanotubes and their content 3 - 24 vol.% are presented. A composite material with equal crystallite structure and uniform distribution of nanotubes in the matrix, demonstrating an increase in strength in bending to 400 MPa, is obtained.