Sandvik Intellectual Property Ab

Ab Sandvik Coromant

Raluca Morjan Brenning

Jan Engqvist

Erik Lindahl

Andreas Blomqvist

Linus Von Fieandt

Ernesto Coronel

Erik HOLMSTRÖM

A coated cutting tool is CVD coated and includes a substrate of a cemented carbide, wherein the metallic binder in the cemented carbide Includes Ni. The CVD coating includes an inner layer of TiN and a subsequent layer of TiCN.

Coated cutting tool

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 substrate is coated with a coating having a layer of &#x3b1;-AlO, wherein the &#x3b1;-AlOlayer exhibits a texture coefficient TC(0 0 12)&#x2265;7.2 and wherein the ratio of I(0 0 12)/I(0 1 14)&#x2265;0.8. The coating further includes a MTCVD TiCN layer located between the substrate and the &#x3b1;-AlOlayer. The MTCVD TiCN layer exhibits a pole figure, as measured by EBSD, in a portion of the MTCVD TiCN layer parallel to the outer surface of the coating and less than 1 &#x3bc;m from the outer surface of the MTCVD TiCN, wherein a pole plot based on the data of the pole figure, with a bin size of 0.25&#xb0; over a tilt angle range of 0&#xb0;&#x2264;&#x3b2;&#x2264;45&#xb0; from the normal of the outer surface of the coating shows a ratio of intensity within &#x3b2;&#x2264;15&#xb0; tilt angle to the intensity within 0&#xb0;&#x2264;&#x3b2;&#x2264;45&#xb0; of &#x2265;45%.

CVD coated cutting tool

Growing community of inventors

Uppsala, Sweden

Raluca Morjan Brenning