Hard nanometer layered ZrO2/TiN coating

A nano-multilayer and coating technology is applied in the field of ceramic coating and cutting tool material surface coating ceramic coating, which can solve the problem of insufficient shear modulus difference, failure to meet the necessary conditions of nano-multilayer and coating, Can not form superhard effect coherent interface and other problems, to achieve the effect of large application value and excellent high temperature oxidation resistance

Inactive Publication Date: 2007-01-03
SHANGHAI JIAO TONG UNIV
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  • Abstract
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Problems solved by technology

Among them, ZrO 2 / Al 2 o 3 Thanks Al 2 o 3 The amorphous state of the multilayer coating cannot form the coherent interface necessary for the superhard effect, and the ZrO 2 / Y 2 o 3 Although the nano-multilayer coating forms a coherent interface, the difference in shear modulus between the two compositions is not large enough and fails to meet the necessary conditions for the nano-multilayer and coating to produce superhard effects

Method used

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  • Hard nanometer layered ZrO2/TiN coating

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example 1

[0017] The present invention ZrO 2 The specific process parameters of the preparation method of the / TiN multilayer coating are: the partial pressure of Ar gas is 3.2×10 -1 Pa, ZrO 2 The sputtering power of the target is 150W, the deposition time is 9 seconds, the power of the TiN target is 50W, the deposition time is 1 second, the total sputtering time is 2h, and the substrate temperature is 2 / ZrO in TiN multilayer coating 2 The layer thickness is 4.4 nm, the TiN layer thickness is 0.4 nm, and the total thickness is 2 μm. The hardness of the coating was 19.6 GPa.

example 2

[0019] The present invention ZrO 2 The specific process parameters of the preparation method of the / TiN multilayer coating are: the partial pressure of Ar gas is 3.2×10 -1 Pa, ZrO 2 The sputtering power of the target is 150W, the deposition time is 9 seconds, the power of the TiN target is 50W, the deposition time is 2 seconds, the total sputtering time is 2h, and the substrate temperature is 2 / ZrO in TiN multilayer coating 2 The layer thickness is 4.4 nm, the TiN layer thickness is 0.8 nm, and the total thickness is 2 μm. The hardness of the coating was 23 GPa.

example 3

[0021] The present invention ZrO 2 The specific process parameters of the preparation method of the / TiN multilayer coating are: the partial pressure of Ar gas is 3.2×10 -1 Pa, ZrO 2 The sputtering power of the target is 150W, the deposition time is 9 seconds, the power of the TiN target is 50W, the deposition time is 1 second, the total sputtering time is 3.5h, and the substrate temperature is 2 The thickness of the ZrO2 layer in the / TiN multilayer coating is 4.4nm, the thickness of the TiN layer is 1.2nm, and the total thickness is 3.5μm. The hardness of the coating was 21 GPa.

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Abstract

The present invention is one kind of multilayer hard nanometer ZrO2/TiN coating and belongs to the field of ceramic coating technology. The multilayer hard nanometer ZrO2/TiN coating includes alternately deposited ZrO2 layers of 2-8 nm thickness and TiN layers of 0.4-1.2 nm thickness on the substrate of hard alloy, ceramic or metal, and has total thickness of 2-5 microns. It is prepared through a double-target sputtering process in argon atmosphere. It has not only excellent high temperature oxidation resistance, but also hardness as high as 19.1-23 GPa. The multilayer hard nanometer ZrO2/TiN coating of the present invention may be formed on high speed cutting tool and other high temperature wear and corrosion resistant workpieces.

Description

technical field [0001] What the present invention relates to is a kind of ceramic coating, specifically a kind of ZrO 2 / TiN hard nano multi-layer coating, used in the technical field of ceramic coating on the surface of cutting tool materials. Background technique [0002] Due to the high machining efficiency and low environmental pollution, high-speed dry cutting with a cutting speed of ≥100m / min is increasingly becoming the mainstream of cutting technology development. At the same time, high-speed and dry cutting technology put forward higher requirements on the performance of tool coatings. In addition to requiring the coating to have mechanical properties such as high hardness and low friction coefficient that ordinary cutting tool coatings should have, it is also necessary to coat The layer has excellent high temperature oxidation resistance. However, although the existing tool coatings have high hardness, their oxidation resistance cannot meet the harsh service cond...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/06C23C14/35
Inventor 李戈扬刘艳岳建岭孔明戴嘉维
Owner SHANGHAI JIAO TONG UNIV
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