Cutting tool with textured alumina layer
A cutting tool and fiber texture technology, applied in the field of cutting tools with textured alumina layer, can solve the problems of not disclosing the preferred crystallographic orientation of the TiC layer, not disclosing the preferred crystallographic orientation, etc.
Active Publication Date: 2020-12-25
WALTER AG
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Moreover, the preferred crystallographic orientation of these layers is not disclosed, nor is the κ-Al 2 o 3 or-Al 2 o 3 The preferred crystallographic orientation of the layer, nor the preferred crystallographic orientation of the TiC layer is disclosed
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[0050] fiber texture
[0051] As used herein, the terms "fibrous texture" or "texture", respectively, are used in connection with thin films typically produced by vapor deposition, which distinguish the orientation of the growing grains from random orientation. Three types of textures are generally distinguished in films and coatings: (i) random texture, when the grains have no preferred orientation; (ii) fibrous texture, in which the grains in the coating are oriented such that the A set of geometrically equivalent crystallographic planes {hkl} defined by the Le indices h, k, and l was found to be preferentially oriented parallel to the surface plane of the substrate, while there is a rotational degree of freedom of the grain around the fiber axis perpendicular to this plane, and (iii) Epitaxial alignment (or in-plane texture) on a single crystal substrate, where the in-plane alignment fixes all three axes of the grain relative to the substrate. In the context of this appl...
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Abstract
The coating cutting tool, including hard alloy, metal ceramics, ceramics, steel or cubic boron nitrite base, and multi -layer wear -resistant coating with a total thickness of 4 to 25 μm through chemical steam (CVD), where The multi -layered wear -resistant coating includes: with CVD deposition, by the general TI 1‑x AL x C y N z The tialcn layer (A), where 0.2 <x ≤ 0.97, 0 <0.25 and 0.7 <z ≤ 1.15, and the κ‑ κ‑ κ‑ κ‑ κ κ κ κ κ 表示 表示 表示 表示 表示 表示 表示 表示 表示 表示 表示 表示 表示 表示 表示 表示 表示AL 2 O 3 Layer (b), and TI 1‑ x AL x C y N z Layer (A) has an overall fiber composition, where the {111} surface is excellent on the surface of the base surface. Ti obtained internal test 1‑x AL x C y N z The maximum value of the intensity of the {111} pole diagram of the layer (a) is within the tilt angle of the sample method line, and the tilt angle with the sample method is 0 ° ≤A ≤ 60 The relative strength measured ≥50 % within the angle range, and K‑al 2 O 3 Layer (B) has an overall fiber composition, where {002} is preferred to grow parallel on the base surface. K‑AL obtained internal test 2 O 3 The maximum value of the intensity of the {002} pole diagram of the layer (b) is within the tilt angle of the sample method, and the tilt angle with the sample method has a <20 ° tilt angle The relative intensity measured ≥50 % within the angle range.
Description
technical field [0001] The present invention relates to coated cutting tools comprising a substrate of cemented carbide, cermet, ceramic, steel or cubic boron nitride and deposited by chemical vapor deposition (CVD) and having a total thickness of 4 A multilayer wear-resistant coating to 25 μm, wherein the multilayer wear-resistant coating includes a TiAlCN layer (a), which is composed of the general formula Ti 1-x Al x C y N z where 0.2≤x≤0.97, 0≤y≤0.25 and 0.7≤z≤1.15; and κ-Al 2 o 3 The κ alumina layer (b). Background technique [0002] The wear resistance of cutting tools is usually improved by hard refractory coatings of different metal oxides, nitrides and carbides deposited by CVD or PVD techniques. Alumina (Al 2 o 3 ) are widely used as wear-resistant coatings on cutting tools. Al 2 o 3 crystallizes in several different phases, and γ-Al has been achieved on an industrial scale 2 o 3 , α-Al 2 o 3 and κ-Al 2 o 3 Deposition of polymorphs, of which mainly...
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IPC IPC(8): C23C16/02C23C16/40
CPCC23C16/0272C23C16/403C23C28/042C23C28/044C23C16/36C23C28/345
Inventor 德克·施廷斯托斯滕·曼斯
Owner WALTER AG