公开(公告)号：US20190226075A1

公开(公告)日：2019-07-25

申请号：US16300476

申请日：2017-05-04

Applicant: Kennametal Inc. ,  Oerlikon Surface Solutions AG, Pfäffikon

Inventor： Volker DERFLINGER ,  Joern KOHLSCHEEN

IPC: C23C14/00 ,  C23C14/06 ,  C23C28/04

Abstract: A coated body having a substrate and a wear-resistant coating applied to the substrate by physical vapor deposition, the coating comprising a main layer applied to the substrate in a thickness of 1 to 10 pm, wherein said main layer is formed from a nitride of aluminum and at least one other metal from the group consisting of Ti, Cr, Si, Zr and combinations thereof; and a cover layer adjacent to the main layer at a thickness of 0.1 to 5 μm, wherein the cover layer comprises at least one alternating layer consisting of an oxynitride layer and a nitride layer arranged over the oxynitride layer, wherein the oxynitride layer is formed from an oxynitride of aluminum and optionally further metals from the group consisting of chromium, hafnium, zirconium, yttrium, silicon and combinations thereof, and the nitride layer is formed from a nitride of aluminum and at least one other metal from the group consisting of Ti, Cr, Si, Zr and combinations thereof.

公开(公告)号：US20210105888A1

公开(公告)日：2021-04-08

申请号：US16593323

申请日：2019-10-04

Applicant: Kennametal Inc.

Inventor： Robert J. VASINKO ,  Qingjun ZHENG ,  Corinne CHARLTON ,  Joern KOHLSCHEEN

IPC: H05H1/34

Abstract: In one aspect, nozzles for arc torches are described herein comprising refractory coatings for increasing nozzle operational lifetimes via resistance to weld splatter and the associated accumulation of molten metal deposits. In one aspect, a nozzle for an arc torch comprises a first body including a central bore and an exterior surface. A coating is adhered to the exterior surface by thermal spray, physical vapor deposition (PVD), or chemical vapor deposition (CVD), the coating comprising a refractory layer including one or more metallic elements selected from the group consisting of aluminum, silicon and metallic elements of Groups IIIB-VIIIB of the Periodic Table and one or more non-metallic elements selected from Groups IIIA, IVA, VA, and VIA of the Periodic Table.