A kind of cr/crn/(ti, al, si, cr) n composite hard coating and preparation method thereof

A hard coating and coating technology, applied in the coating, metal material coating process, ion implantation plating, etc., can solve the problem of difficult to meet the user's requirements for the service life of the tool coating, the combination of the coating and the tool In order to avoid problems such as poor force and non-nanocrystalline structure of the structure, it can achieve the effects of good diffusivity, uniform coating structure and good wear resistance
CN103789723BInactive Publication Date: 2015-12-02SICHUAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SICHUAN UNIV
Publication Date
2015-12-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation method of a Cr / CrN / (Ti, Al, Si, Cr)N composite hard coating. The preparation method comprises the steps of pretreatment, heating, plasma cleaning, Cr adhesion layer preparation, CrN transition layer preparation, (Ti, Al, Si, Cr)N anti-wearing layer preparation and the like. As a plasma enhanced intermediate frequency reaction magnetron sputtering technology is adopted in the preparation method provided by the invention, the ionization rate of a target material is substantially increased, so that the surface nano-hardness of the prepared composite hard coating can reach above 34 GPa, and the membrane base bonding force grade of the hard coating is HF1-HF2 of German Standard VDI3198. Therefore, the preparation method is suitable for preparation of the coating for high-speed dry-type cutting stainless steel, iron-based high-temperature alloy, high-strength constructional steel and anti-wearing cast steel cutters. The coating is simple in process and suitable for industrial production.
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Description

technical field

[0001] The invention belongs to the technical field of tool surface composite coating material and its preparation, and in particular relates to a Cr / CrN / (Ti, Al, Si, Cr)N composite hard coating and a preparation method thereof. The coating nano The hardness can reach more than 34Gpa, and the bonding strength of the film base is HF1~HF2 (German standard VDI3198). It is especially suitable as a surface coating for high-speed dry cutting stainless steel, iron-based superalloys, high-strength structural steel and wear-resistant cast steel tools. Background technique

[0002] With the rapid development of industry, tools with coated surfaces are widely used in the field of material cutting. Studies have shown that the coating tool has the characteristics of high hardness, wear resistance and strong oxidation resistance, which can significantly improve the service life of the tool. However, with the emergence and development of high-speed cutting and dry cutting,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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