CVD coated cutting tool
AssigneeSandvik Intellectual Property AB
InventorsCarl Bjormander, Erik Lindahl, Jan Engqvist
Life of this patent
Estimating the term…
Abstract
A coated cutting tool for chip forming machining of metals includes a substrate having a surface coated with a chemical vapour deposition (CVD) coating. The coated cutting tool has a substrate coated with a coating including a layer of α-Al2O3, wherein the α-Al2O3 layer exhibits a dielectric loss of 10−6≤tan δ≤0.0025, as measured with AC at 10 kHz, 100 mV at room temperature of 20° C.
Claims13
A coated cutting tool comprising a substrate coated with a coating having at least one layer, the at least one layer including a layer of α-Al2O3, wherein said α-Al2O3 layer exhibits a dielectric loss of 10−6≤tan δ≤25×10−4, as measured with AC at 10 kHz, 100 mV at 20° C.
Dependencies are inferred from the claim text.