Patent · US Active

Tool having a metal oxide coating

US8603617B2 · kind B2 · utility

2Cited by

3References

28Claims

0Family size

Assignee

WALTER AG · DE

Inventors

Veit Schier · Echterdingen, DE
Wolfgang Engelhart · Metzingen, DE

Key dates

Filing date	May 5, 2009
Grant date	Dec 10, 2013
Priority date	—
Expiry date	May 3, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/265
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

The invention concerns a cutting tool comprising a base body and a multi-layer coating applied thereto, which, possibly besides further layers, includes a plurality of main layers A and intermediate layers B applied alternately directly one upon the other, wherein the main layers A and the intermediate layers B are respectively metal oxide layers produced by the PVD process, the thickness of the main layers A is in the range of 4 nm to 1 μm, and the thickness of the intermediate layers B is in the range of 2 nm to 50 nm, wherein the ratio of the thicknesses of the intermediate layers B to the thicknesses of the main layers A is in the range of 1:2 to 1:100.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.