| 摘要 |
FIELD: devising of tools used in metal working with formation of chips and manufactured from cemented carbide with wear-resistance coating deposited from gas phase. SUBSTANCE: body from cemented carbide with coating has the first layer of coating adjacent with base in the form of layer of metal carbonitride MetC<SB>x</SB>N<SB>1-x</SB>, where <EMI ID=0.339 HE=3 WI=9 TI=CHI>, and the second layer in the form of layer of metal oxynitrocarbide MetC<SB>x</SB>O<SB>y</SB>N<SB>z</SB>,, where 0.7 <EMI ID=0.340 HE=3 WI=3 TI=CHI> x + y + z <EMI ID=0.341 HE=3 WI=3 TI=CHI> 1.3, and 0.2 <y > 0.8, and the third layer in the form of wear-resistant layer of MetC<SB>x</SB>N<SB>1-x</SB>, where 0 <x > 1. In this case, metal is selected from group including Ti, Zr, Hf, V, Nb and Ta. EFFECT: higher adhesion between layers. 19 cl, 2 dwg |
