TiAlN-coated tool

US9476114B2 · kind B2 · utility

Assignee

• WALTER AG · DE

Inventors

• Veit Schier · Echterdingen, DE
• Ulrich Albers · Haigerloch, DE

Key dates

• Filing date: Jul 23, 2013
• Grant date: Oct 25, 2016
• Expiry date: Jul 23, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31678
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

Tool comprising a base body made of hard metal, cermet, ceramics, steel or high-speed steel and a single-layer or multi-layer anti-wear protective coating applied thereon in the PVD process, at least one layer of said anti-wear protective coating being a titanium-aluminum-nitride layer, TixAlyN where x+y=1, which layer can contain, according to the process, up to 5% by weight of further metals, characterized in that the TixAlyN layer is a multi-coat substructure having a plurality of periodically alternating Tix(A)Aly(A)N coats (A) where x(A)+y(A)=1 and Tix(B)Aly(B)N coats (B) where x(B)+y(B)=1, the Al concentration y(B) in coats (B) amounting at most to 70 at. % (y(B) 0.70) and the Al concentration y(B) in coats (B) being from 10 to 25 at. % higher than the Al concentration y(A) in coats (A) (y(B)=(y(A)+0.10) to (y(A)+0.25)).