The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 02, 2013
Filed:
Feb. 19, 2009
Mats Johansson, Linkoping, SE;
Jacob Sjölén, Fagersta, SE;
Magnus Odén, Tullinge, SE;
Axel Knutsson, Linkoping, SE;
Mats Johansson, Linkoping, SE;
Jacob Sjölén, Fagersta, SE;
Magnus Odén, Tullinge, SE;
Axel Knutsson, Linkoping, SE;
Seco Tools AB, Fagersta, SE;
Abstract
A cutting tool includes a body of a hard alloy of cemented carbide, cermet, ceramics, cubic boron nitride based material or high speed steel and on which at least one of the functioning parts of the surface thereof, a hard and wear resistant coating is applied. The coating includes a polycrystalline laminar, multilayered structure of metal nitride compounds, in a repetitive form . . . MeN/(TiAl)N/MeN/(TiAl)N/MeN/(TiAl)N/MeN/(TiAl)N . . . of cubic structured (TiAl)N layers where 0.3<x<0.95 and cubic structured MeN layers where Me is one or more of the metal element Ti, Zr, Hf, V, Nb, Ta, Mo and Al. The laminated structure has a repeat period, λ, of 5 nm≦λ<20 nm, a layer thickness relation of 1/10<(d/d)<1/3 and a thickness d≧1 nm that is essentially constant throughout its total thickness up to 20 μm. The coating hardens as a nanocomposite, adapting its strength during spinodal decomposition of (TiAl)N in cubic TiN and cubic AlN domains where the additional cubic structured MeN layers provides elements for locking a predominantly overall cubic coating structure thus suppressing the hexagonal AlN phase formation leading to improved high temperature metal cutting properties.