Multi-layer gradient high-temperature wear-resistant coating on surface of cutting tool and preparation method thereof

A cutting tool, high-temperature wear-resistant technology, applied in the direction of coating, metal material coating process, ion implantation plating, etc., can solve the problems of low deposition rate, discharge stability and controllability, etc. The effect of reducing glow voltage, reducing arcing phenomenon, and increasing coating deposition rate

Inactive Publication Date: 2019-05-10
LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, compared with the traditional DC magnetron sputtering technology (DCMS), HIPIMS still has obvious disadvantages. Its deposition rate is generally relatively low, and the discharge stability and controllability need to be improved.

Method used

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  • Multi-layer gradient high-temperature wear-resistant coating on surface of cutting tool and preparation method thereof
  • Multi-layer gradient high-temperature wear-resistant coating on surface of cutting tool and preparation method thereof
  • Multi-layer gradient high-temperature wear-resistant coating on surface of cutting tool and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A method for preparing a multilayer high-temperature wear-resistant coating on the surface of a cutting tool, the steps of the method are as follows:

[0037] (1) Chemical scrubbing substrate 1: Use a cotton swab dipped in petroleum ether to scrub the surface of the sample to be plated with the prepared high-speed cutting tool substrate 1 to remove obvious grease and dust particles on the surface;

[0038] (2) Chemically clean substrate 1: use petroleum ether, acetone, and absolute ethanol to ultrasonically clean high-speed cutting tool substrate 1 for 30 minutes each;

[0039] (3) Heating and vacuuming: Install the clean cutting tool substrate 1 on the workpiece frame of the coating vacuum chamber of the high-power pulse magnetron sputtering equipment, set the heating temperature to 200°C, and the vacuum degree is less than or equal to 2×10 -3 Pa.

[0040] (4) Ion beam cleaning substrate 1: Introduce Ar gas into the coating vacuum chamber until the vacuum degree is 1....

Embodiment 2

[0052] A method for preparing a multilayer high-temperature wear-resistant coating on the surface of a cutting tool, the steps of the method are as follows:

[0053] (1) Chemical scrubbing substrate 1: Use a cotton swab dipped in petroleum ether to scrub the surface of the sample to be plated with the prepared high-speed cutting tool substrate 1 to remove obvious grease and dust particles on the surface;

[0054] (2) Chemically clean substrate 1: use petroleum ether, acetone, and absolute ethanol to ultrasonically clean high-speed cutting tool substrate 1 for 30 minutes each;

[0055] (3) Heating and vacuuming: Install the clean cutting tool substrate 1 on the workpiece frame of the coating vacuum chamber of the high-power pulse magnetron sputtering equipment, set the heating temperature to 200°C, and the vacuum degree is less than or equal to 2×10 -3 Pa.

[0056] (4) Ion beam cleaning substrate 1: Introduce Ar gas and keep the vacuum degree stable at 1.5×10 -2 Pa~5.0×10 -2...

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Abstract

The invention belongs to the field of high-speed cutting tool surface vacuum coating modification, and relates to a multi-layer gradient high-temperature wear-resistant coating on the surface of a cutting tool and a preparation method thereof. The coating consists of a Cr bombardment implant layer with a thickness of 5-15 nm, a Cr transition layer with a thickness of 1-2 micron, a CrN performancebearing layer with a thickness of 2-4 micron and an AlCrN hard core layer with a thickness of 5-15 micron which are sequentially attached to the surface of a matrix of the cutting tool; the coating isprepared through a HIPIMS and DCMS composite co-deposition technology. The coating has the advantages of high hardness, good adhesion property with the matrix and high temperature and wear resistance.

Description

technical field [0001] The invention belongs to the field of vacuum coating film modification on the surface of a tool for high-speed cutting, and relates to a multilayer gradient high-temperature wear-resistant coating on the surface of a cutting tool and a preparation method thereof. Specifically, high-power pulsed magnetron sputtering technology is used to make use of the high ionization rate of its metal target, and an appropriate pulse bias is superimposed on the substrate to prepare multi-layer Cr / CrN / AlCrN gradient high-temperature wear-resistant on the surface of high-speed cutting tools. coating. Background technique [0002] At present, the development of high-speed cutting technology puts forward more stringent requirements on the hardness, interface bonding strength, wear resistance and high temperature oxidation resistance of Cr-based coatings. Single-layer Cr-based coatings are difficult to meet the performance requirements, while CrN coatings The hardness of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/02C23C14/06C23C14/16C23C14/35
Inventor 周晖郑军贵宾华张凯锋杨拉毛草张延帅冯兴国
Owner LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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