公开(公告)号：US20190106795A1

公开(公告)日：2019-04-11

申请号：US16213760

申请日：2018-12-07

申请人： Kennametal Inc.

发明人： Vineet KUMAR ,  Ronald PENICH ,  Yixiong LIU

IPC分类号： C23C28/04 ,  C23C28/00 ,  C04B35/66 ,  H01J37/32 ,  C23C14/32 ,  C23C14/02 ,  C23C14/00 ,  C23C14/06

摘要： In one aspect, coated cutting tools are described herein comprising a substrate and a coating comprising a refractory layer deposited by physical vapor deposition adhered to the substrate, the refractory layer comprising M1−xAlxN wherein x≥0.68 and M is titanium, chromium or zirconium, the refractory layer including a cubic crystalline phase and having hardness of at least 25 GPa.

公开(公告)号：US20170218511A1

公开(公告)日：2017-08-03

申请号：US15487209

申请日：2017-04-13

申请人： KENNAMETAL INC.

发明人： Vineet KUMAR ,  Ronald M. PENICH ,  Peter R. LEICHT ,  Mark S. GREENFIELD ,  Yixiong LIU

IPC分类号： C23C16/36 ,  C23C16/32 ,  C23C16/34

CPC分类号： C23C16/34 ,  C23C16/32 ,  C23C16/36 ,  C23C28/042

摘要： A coated cutting insert includes a substrate that is either a ceramic substrate or polycrystalline cubic boron nitride-containing substrate and has a substrate surface. A base coating scheme is applied by chemical vapor deposition to the substrate surface wherein the base coating scheme includes the following coating layers: an inner coating layer adjacent to the substrate surface wherein the inner coating layer is a nitride selected from the group consisting of titanium nitride, zirconium nitride and hafnium nitride; an inner mediate coating layer deposited to the inner coating layer wherein the inner mediate coating layer is a carbonitride selected from the group consisting of titanium carbonitride, zirconium carbonitride and hafnium carbonitride; an outer mediate coating layer deposited to the inner mediate coating layer and wherein the outer mediate coating layer is a carbonitride selected from the group consisting of titanium carbonitride, zirconium carbonitride and hafnium carbonitride; and an outer coating layer deposited on the outer mediate coating layer wherein the outer coating layer is a carbide selected from the group consisting of titanium carbide, zirconium carbide and hafnium carbide. An exterior coating scheme is deposited on the base coating scheme by physical vapor deposition.

公开(公告)号：US20170129015A1

公开(公告)日：2017-05-11

申请号：US15413964

申请日：2017-01-24

申请人： Kennametal Inc.

发明人： Qingjun ZHENG ,  Yixiong LIU ,  James A. FAUST ,  Mark J. ROWE ,  Danie J. DE WET ,  Sudharsan SUBBAIYAN ,  Michael J. MEYER

IPC分类号： B22F7/00 ,  C22C38/38 ,  C22C38/36 ,  C22C38/22 ,  B22D23/06 ,  C22C9/10 ,  C22C9/06 ,  C22C9/01 ,  C22C19/07 ,  C22C19/05 ,  B22F3/10 ,  C22C14/00

CPC分类号： B22F7/008 ,  B22D23/06 ,  B22F3/10 ,  B22F5/106 ,  B22F2005/103 ,  B22F2007/066 ,  B22F2301/10 ,  B22F2301/15 ,  B22F2301/205 ,  B22F2301/35 ,  B22F2302/10 ,  B22F2302/253 ,  B22F2302/45 ,  B23K35/0222 ,  B23K35/0244 ,  B23K35/3033 ,  B23K35/304 ,  C22C1/1015 ,  C22C9/01 ,  C22C9/06 ,  C22C9/10 ,  C22C14/00 ,  C22C19/058 ,  C22C19/07 ,  C22C29/02 ,  C22C32/0047 ,  C22C38/22 ,  C22C38/36 ,  C22C38/38

摘要： In one aspect, methods of making freestanding metal matrix composite articles and alloy articles are described. A method of making a freestanding composite article described herein comprises disposing over a surface of the temporary substrate a layered assembly comprising a layer of infiltration metal or alloy and a hard particle layer formed of a flexible sheet comprising organic binder and the hard particles. The layered assembly is heated to infiltrate the hard particle layer with metal or alloy providing a metal matrix composite, and the metal matrix composite is separated from the temporary substrate. Further, a method of making a freestanding alloy article described herein comprises disposing over the surface of a temporary substrate a flexible sheet comprising organic binder and powder alloy and heating the sheet to provide a sintered alloy article. The sintered alloy article is then separated from the temporary substrate.

公开(公告)号：US20170356091A1

公开(公告)日：2017-12-14

申请号：US15631799

申请日：2017-06-23

申请人： KENNAMETAL INC.

发明人： Zhenyu LIU ,  Peter Rudolf LEICHT ,  Yixiong LIU

IPC分类号： C23C28/04 ,  C23C16/36 ,  C23C16/40 ,  C23C16/56 ,  C23C16/34 ,  C23C28/00

摘要： Cutting tools are described having coatings which can demonstrate desirable wear resistance and increased cutting lifetimes. A coated cutting tool described herein has a substrate and a coating with a plurality of alternating layers of a first layer of Al2O3 and a second layer of at least one of MeAl2O3 and MeAl2O3/MeO2 composite, wherein Me is Zr, Hf, Ti or a combination thereof. The coating has a superlattice-like structure.

公开(公告)号：US20170226634A1

公开(公告)日：2017-08-10

申请号：US15495570

申请日：2017-04-24

申请人： KENNAMETAL INC.

发明人： Zhenyu LIU ,  Yixiong LIU

IPC分类号： C23C16/34 ,  C23C16/40

CPC分类号： C23C16/34 ,  C23C16/403 ,  C23C28/042 ,  C23C28/42

摘要： In one aspect, articles are described herein comprising refractory coatings employing an inter-anchored multilayer architecture. Articles having refractory coatings described herein, in some embodiments, are suitable for high wear and/or abrasion applications such as metal cutting operations. A coated article described herein comprises a substrate and a coating deposited by CVD adhered to the substrate, the coating including a refractory layer comprising a plurality of sublayer groups, a sublayer group comprising a Group IVB metal nitride sublayer and an adjacent layer alumina sublayer, the Group IVB metal nitride sublayer comprising a plurality of nodules interfacing with the alumina sublayer.