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Nanocrystalline amorphous composite coating, preparation method thereof and cutter

A composite coating and nanocrystalline technology, applied in coatings, metal material coating processes, vacuum evaporation plating and other directions, can solve problems such as short boards, improve wear resistance, reduce friction coefficient, and improve high temperature stability Effect

Active Publication Date: 2020-11-10
ZHUZHOU HUARUI PRECISION CUTTINGS TOOLS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a nanocrystalline amorphous composite coating and its preparation method and cutting tool, the purpose of which is to solve the problem of balancing the short board between different doping elements

Method used

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  • Nanocrystalline amorphous composite coating, preparation method thereof and cutter
  • Nanocrystalline amorphous composite coating, preparation method thereof and cutter
  • Nanocrystalline amorphous composite coating, preparation method thereof and cutter

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Deposition on the tool substrate by cathodic arc ion plating (Ti 0.3 al 0.6 (NbSiC)0.1 N) (Nb:Si:C atomic ratio is 3:5:2, the atomic composition is the theoretical design value) nanocrystalline amorphous single-layer composite coating: pass through the working gas N 2 And keep the pressure at 3.5Pa, the initial bias voltage is set to 30V, the rotation speed of the workpiece holder is about 1.58r / min, and 6 Tis are turned on at the same time 0.3 al 0.6 (NbSiC) 0.1 target, the arc source current is 200A, and the deposition time is 35min; the initial bias voltage is increased by 20V, and other process parameters remain unchanged, and the deposition time is 40min; the bias voltage continues to increase by 20V, and the deposition is continued for 40min to form a single layer of nanocrystalline amorphous Ti 0.3 al 0.6 (NbSiC) 0.1 N coating, figure 1 b is the fracture morphology of the coating.

Embodiment 2

[0034] Using cathodic arc ion plating technology to deposit Ti0.33Al0.67N / Ti0.3Al0.6(NbSiC)0.1N (the composition is the theoretical design value) nanocrystalline amorphous multilayer composite coating on the tool substrate: pass through the working gas N2 and Keep the pressure at 3.5Pa, set the initial bias voltage to 30V, and the rotation speed of the workpiece holder is about 1.58r / min. Only two TiAl targets are turned on, the arc source current is 200A, and the deposition time is 55min; the TiAl target is turned off, and four TiAl targets are turned on. 0.3 al 0.6 (NbSiC) 0.1 target, the arc source current is 200A, the initial bias voltage is increased by 20V, and the deposition time is 60min; the bias voltage continues to increase by 10V, and the deposition time is 70min, forming a nanocrystalline amorphous coating with a TiAlN / TiAlNbSiCN double-layer structure. figure 1 c is the fracture topography of the coating.

Embodiment 3

[0036] Deposition of Ti on Tool Substrate by Cathodic Arc Ion Plating Technology 0.3 al 0.53 (NbSiC) 0.13 N (B:C atomic ratio is 3:1, the atomic composition is the theoretical design value) nanocrystalline amorphous single-layer composite coating: the working gas N 2 And keep the pressure at 3.5Pa, set the bias voltage at 30V, the rotation speed of the workpiece holder is about 2.63r / min, and open 2 Ti at the same time 0.33 al 0.67 Target and 4 pieces of Ti 0.3 al 0.5 (NbSiC) 0.2 target, the arc source current is 200A, and the deposition time is 25min; the initial bias voltage is increased by 20V, and other process parameters remain unchanged, and the deposition time is 32min; the bias voltage continues to increase by 20V, and the deposition is continued for 32min to form a single layer of nanocrystalline amorphous Ti 0.3 al 0.53 (NbSiC) 0.13 N coating, figure 1 d is the fracture morphology of the coating.

[0037] 4. Turn off all arc sources, turn off the bias power...

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Abstract

The invention provides a TiAl (Nb, Si, C) N-containing nanocrystalline amorphous composite coating, a preparation method thereof and a cutter. The composite coating is a nanocrystalline amorphous TiAl(Nb, Si, C) N coating formed by physical vapor deposition. The TiAlN composite coating with a hardening and wear-resistant Si element, a toughening Nb element and an antifriction C element co-doped in an optimal proportion maintains the characteristics of excellent comprehensive performance and no short plate and good 'wooden barrel effect' of a TiAlN-based coating, meanwhile, the adhesive force,wear resistance and high-temperature stability of the coating can be greatly improved, and the integration of toughness and wear resistance of the coating is realized. The preparation method is simple in process, easy to operate in actual production, low in production cost and suitable for large-scale popularization.

Description

technical field [0001] The invention relates to the coating field of cutting tools, in particular to a nanocrystalline amorphous composite coating, a preparation method thereof and a cutting tool. Background technique [0002] High-performance coated tools have become a symbol of modern tools. The surface coating of the tool has the characteristics of high hardness, good wear resistance, stable chemical properties, heat resistance and oxidation resistance, and low friction coefficient, which significantly improves the service life and cutting efficiency of the coated tool. efficiency. TiAlN coating is one of the most widely used coating materials at present. Increasing the Al content while keeping the face-centered cubic crystal structure of the coating unchanged makes the coating have good mechanical properties and excellent high-temperature oxidation resistance. The hardness of the coating can reach HV3300, and the anti-oxidation temperature of the coating is >800°C. I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/32C23C14/06
CPCC23C14/325C23C14/0664C23C14/0021
Inventor 俞洋张华栋林孝良梅方胜肖旭凯高江雄
Owner ZHUZHOU HUARUI PRECISION CUTTINGS TOOLS CO LTD
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