WEAR RESISTANT COMPOSITE CERAMIC NANOSTRUCTURED MATERIAL AND METHOD OF ITS OBTAINING Russian patent published in 2014 - IPC C04B35/119 C04B35/645 B82Y30/00 

FIELD: chemistry.

SUBSTANCE: claimed ceramic material based on aluminium oxide with a volume content of components: Al₂O₃ 63-82%, TiCN 16-34%, ZrO₂ 2-3%, contains a phase of titanium carbonitride TiCN on boundaries of aluminium oxide grains and nanosize particles of zirconium dioxide inside aluminium oxide. The phase of titanium carbonitride is presented by the nanosize particles and particles of submicron size. The nanosize particles of TiCN and ZrO₂ are additionally present on the boundaries of aluminium oxide grains and particles of TiCN phase of submicron size. The claimed method of the ceramic material obtaining, includes stages of milling, mixing of components after milling and sintering of the obtained mixture, with a speed of mixture heating to a temperature of sintering being supported constant in the range of 50-400 degree/min, and sintering being realised at temperatures from 1450 to 1600°C, under an impact of electric and/or electromagnetic fields under pressure.

EFFECT: high indices of strength, hardness, wear resistance of the material, including that at increased temperatures.

5 cl, 11 ex, 2 tbl, 1 dwg