FIELD: machine engineering.
SUBSTANCE: coating layer includes at least one layer of Ti compound. The Ti compound layer comprises a compound containing elemental titanium and at least one element selected from the group consisting of C, N, O and B. Ti compound layer is provided by a cracked area, if viewed from above, the polished surface is substantially parallel to the substrate surface. Inside this area, there are discontinuous fractures, where one or both ends of said fractures do not abut against cracks which constitute said area. The ratio between the number-average density of the area and the number-average density (B) of the discontinuous fracture satisfies the condition of 0.7<B/A<2.
EFFECT: produced coated cutting instrument having excellent resistance to chipping, wear resistance, resistance to destruction, which increases the tool life.
8 cl, 2 dwg, 3 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| CUTTING TOOL WITH ABRASION RESISTANT COATING | 2014 |
|
RU2643754C2 |
| COATED CUTTING TOOL | 2015 |
|
RU2655414C2 |
| CVD-COATED CUTTING TOOL | 2017 |
|
RU2736039C2 |
| METHOD TO APPLY COMBINED PVD/CVD/PVD COATINGS ONTO CUTTING HARD-ALLOY TOOL | 2011 |
|
RU2468124C1 |
| CVD-COATED CUTTING TOOL | 2017 |
|
RU2736536C2 |
| CUTTING TOOL WITH COATING | 2018 |
|
RU2758424C2 |
| COATED CUTTING TOOL | 2018 |
|
RU2766604C2 |
| METHOD OF APPLICATION OF WEAR-RESISTANT COATING TO CUTTING TOOL | 2001 |
|
RU2207398C2 |
| METHOD FOR WEAR RESISTANCE COATING APPLICATION ON CUTTING TOOL | 2003 |
|
RU2250931C1 |
| CUTTING TOOL WITH CVD-COATING WITH LAYER OF κ-AlO TEXTURE {0 0 1} | 2017 |
|
RU2669134C1 |
