The thermochemical ultrafine cobalt powder is produced by a one-stage thermochemical method of decomposition and reduction of metal salts in accordance with the requirements of the technical conditions.
Cobalt powders are determined by their hardness, heat resistance, mechanical strength, wear resistance and manufacturability. These materials are alloys of refractory metal carbides with cobalt.
| Parameter | Value of the norm |
| Bulk density, g/cm³, not more than | 0,9 |
| The conditional particle size by Fisher *, μm | 0,7-1,6 |
*Dispersion of the powder is characterized by an average particle diameter according to Fisher
| Co, not less than,% of mass | Content of elements, not more than% mass | ||||||
| Ni | Fe | O | Mg | Mn | S | Zn | |
| 99,8 | 0,05 | 0,025 | 0,5 | 0,005 | 0,006 | 0,001 | 0,005 |
| Ca | Al | C | Cu | Si | Na | ||
| 0,01 | 0,002 | 0,1 | 0,01 | 0,01 | 0,015 | ||
There are many alloys of this system that differ in the amount of cobalt, the dispersion of the carbide phase, the presence of various hardening and inhibiting additives. Unchanged in them is the presence of two components: tungsten carbide, which plays the role of «solid phase», and cobalt, used as a binder. The combination of high mechanical properties of tungsten carbide with ductility and high cobalt toughness provides them with high hardness, strength and wear resistance.