FIELD: chemistry.
SUBSTANCE: high hardness is achieved by modifying the grain boundaries of corundum with carbon. All carbon is distributed along grain boundaries. The synthesis method includes coating corundum grains with single fullerene layers by treating corundum and fullerene in a planetary mill. The resulting modified nanopowder of corundum with an average particle size of 30 nm is either compacted by uniaxial two-sided pressing and sintered at 1600-1800°C, or it is hot pressed at the pressure of 0.5-2 GPa at the temperature of 1600-1800°C.
EFFECT: developing a ceramic corundum-based material with a high hardness exceeding the hardness of monocrystalline corundum.
2 cl, 5 dwg, 6 ex
| Title | Year | Author | Number |
|---|---|---|---|
| CERAMIC NANOSTRUCTURED MATERIAL BASED ON SILICON NITRIDE AND METHOD OF ITS PRODUCTION | 2016 |
|
RU2653182C2 |
| ALUMINIUM-BASED NANOSTRUCTURE COMPOSITE MATERIAL | 2010 |
|
RU2440433C1 |
| METHOD OF PRODUCING ALUMINUM-BASED NANOSTRUCTURE COMPOSITE MATERIAL | 2019 |
|
RU2716965C1 |
| METHOD OF PRODUCING ALUMINUM-BASED NANOSTRUCTURE COMPOSITE MATERIAL | 2019 |
|
RU2716930C1 |
| METHOD OF DIAMOND-BEARING MATERIAL PRODUCTION | 2006 |
|
RU2335556C2 |
| METHOD FOR PRODUCING ALUMINIUM-BASED NANOSTRUCTURAL COMPOSITE MATERIAL | 2019 |
|
RU2751401C2 |
| METHOD FOR PRODUCING A CERAMIC COMPOSITE BASED ON SILICON NITRIDE-TITANIUM NITRIDE | 2022 |
|
RU2784667C1 |
| WEAR RESISTANT COMPOSITE CERAMIC NANOSTRUCTURED MATERIAL AND METHOD OF ITS OBTAINING | 2013 |
|
RU2525538C1 |
| METHOD OF PRODUCING BORON-CARBON COMPOSITE MATERIAL | 2019 |
|
RU2709885C1 |
| COMPOSITE CERAMIC MATERIAL AND METHOD FOR PRODUCTION THEREOF | 2014 |
|
RU2569113C1 |
