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Chromium nitride aluminum-titanium composite coating, cutter deposited with same, and preparation method

A composite coating, chromium aluminum nitride technology, applied in the direction of chemical instruments and methods, coatings, metal material coating technology, etc., can solve the problems that cannot meet the needs of the development of the manufacturing industry, cannot be allocated, and hinder the development of the manufacturing industry Steps and other issues to achieve the effect of solving friction and wear problems, huge economic and social benefits, and low friction coefficient

Inactive Publication Date: 2014-01-01
YICHANG HOUHUANG VACUUM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, advanced CNC machine tools cannot be equipped with advanced domestic cutting tools, so they have to be equipped with imported cutting tools
The single product structure of China's cutting tool industry can no longer meet the needs of the development of the manufacturing industry and hinder the pace of development of the manufacturing industry

Method used

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  • Chromium nitride aluminum-titanium composite coating, cutter deposited with same, and preparation method
  • Chromium nitride aluminum-titanium composite coating, cutter deposited with same, and preparation method
  • Chromium nitride aluminum-titanium composite coating, cutter deposited with same, and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] First, clean the carbide tool, clamp it on the workpiece frame, and start vacuuming. When the vacuum degree is higher than 5×10 -3 At Pa, start heating and degassing, the temperature is controlled at 200°C, and the revolution speed of the workpiece holder is 3 rpm. When the vacuum degree is 5×10 -3 At Pa, Ar gas is introduced, the temperature is controlled at 200°C, the bias power is turned on, and the bias voltage is controlled at -800V, and the tool substrate is glow-cleaned. After the glow cleaning is finished, the vacuum degree is adjusted to 2×10 -2 Pa, the bias voltage is kept at -800V, the temperature is controlled at 200°C, the Cr target is opened, and the tool substrate is bombarded to obtain a Cr bonding layer with a thickness of 70 nm; after the bombardment is completed, the bias voltage is adjusted to -200V, and the Ar gas is turned off. channel, into N 2 The vacuum degree was adjusted to 2.0 Pa, the temperature was 300°C, and a CrN support layer with a t...

Embodiment 2

[0030] Clean the tungsten carbide tool, clamp it on the workpiece frame, and start vacuuming. When the vacuum degree is higher than 5×10 -3Pa, start heating and degassing, control the temperature at 300°C, keep the revolution speed of the workpiece holder at 9 rpm, when the vacuum degree is 5×10 -3 At Pa, Ar gas is introduced, the temperature is controlled at 300°C, the bias power is turned on, and the bias voltage is controlled at -800V, and the tool substrate is glow-cleaned. After glow cleaning, in a vacuum of 1.5×10 -2 Pa, at a temperature of 300°C and a bias voltage of -800V, open the Cr target, and bombard the tool substrate to obtain a 100 nm thick Cr bonding layer; after the bombardment, close the Ar gas channel, 2 The vacuum degree was adjusted to 2.0Pa, the bias voltage was adjusted to -150V, the temperature was controlled at 300°C, and a 100nm-thick CrN support layer was deposited on the Cr bonding layer. After the deposition of the CrN support layer, adjust the N...

Embodiment 3

[0032] Clean the hard alloy tool, clamp it on the workpiece frame, and start vacuuming. When the vacuum degree is higher than 5×10 -3 Pa, start heating and degassing, control the temperature at 350°C, keep the revolution speed of the workpiece holder at 12 rpm, when the vacuum degree is 5×10 -3 At Pa, Ar gas is introduced, the temperature is controlled at 350°C, the bias power is turned on, and the bias voltage is controlled at -800V, and the tool is glow cleaned. After glow cleaning, the vacuum degree is adjusted to 2.2×10 -2 Pa, the temperature is controlled at 350°C, and the bias voltage is maintained at -900V. Open the Cr target and bombard the tool substrate to obtain a 50nm thick Cr bonding layer; after the bombardment is completed, the bias voltage is reduced to -200V. Into N 2 The vacuum degree was adjusted to 2.0Pa, the temperature was controlled at 350°C, and a 200nm-thick CrN support layer was deposited on the Cr bonding layer. After the deposition of the CrN sup...

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Abstract

The invention discloses a chromium nitride aluminum-titanium composite coating, a cutter deposited with the same, and a preparation method. A Cr bonding layer, a CrN supporting layer and a main wear-resistant layer are sequentially deposited on a cutter substrate, wherein the main wear-resistant layer is a multi-layer composite coating composed of a TiAlN layer in a nanocrystalline structure and a CrTiAlN layer in a superlattice structure in an alternate mode, thereby obtaining the cutter with the chromium nitride aluminum-titanium composite coating. The chromium nitride aluminum-titanium composite coating provided by the invention combines the advantages of high hardness, low friction coefficient, strong adhesive force and high oxidation resistance temperature of the superlattice structure and nanocrystalline structure. The obtained cutter has high surface hardness, relatively strong film-base adhesive force, good wear resistance and good high temperature resistance.

Description

technical field [0001] The invention relates to a hard alloy tool with chromium nitride aluminum titanium coating and a preparation method thereof, belonging to the field of thin film materials. Background technique [0002] With the continuous development of cutting towards high speed, high efficiency and high precision machining, and the emergence of more and more high-strength, high-toughness, difficult-to-cut high-performance materials, as well as the ever-changing cutting requirements such as hard machining and dry cutting, making It is difficult for cutting tool materials to meet the increasingly complex comprehensive cutting performance requirements. If the overall performance of the material meets the requirements, not only is it extremely uneconomical in the use of resources, but it is also difficult or even difficult to achieve in terms of material technology. Considering that the failure of cutting tools starts from the surface, the comprehensive cutting performa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B15/04B32B33/00B32B7/12C23C14/06C23C14/34
Inventor 田灿鑫杨兵闫少健付德君
Owner YICHANG HOUHUANG VACUUM TECH
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