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Nano composite titanium-chromium-silicon nitride cutter coat and preparation method thereof

A silicon nitride, nano-composite technology, applied in coating, metal material coating process, ion implantation plating and other directions, can solve the problem of not meeting the better performance of the tool, and achieve practical use value and meet better performance. Demand, mechanical wear resistance and effect of improved abrasive wear resistance

Active Publication Date: 2010-09-15
GUANGDONG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The previous cemented carbide, high-speed steel cutting tools and the widely used TiCN and TiAlN coating cutting tools have effectively improved the mechanical wear resistance and abrasive wear resistance of the cutting tools, but still cannot meet the requirements of modern industry for better performance of cutting tools.

Method used

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  • Nano composite titanium-chromium-silicon nitride cutter coat and preparation method thereof
  • Nano composite titanium-chromium-silicon nitride cutter coat and preparation method thereof
  • Nano composite titanium-chromium-silicon nitride cutter coat and preparation method thereof

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Embodiment Construction

[0021] The present invention adopts physical vapor deposition technology to coat a layer of titanium / titanium nitride transition layer on the specific surface of WC / Co cemented carbide cutter, and then coats a layer of titanium chromium silicon nitride coating material, wherein the thickness of the transition layer 0.1-0.5 microns, and the thickness of the titanium chromium silicon nitride coating is 1-4 microns. The coating formulations are as follows:

[0022] Titanium 38at.%, Chromium 20at.%, Silicon 6at.%, Nitrogen 36at.%;

[0023] Titanium 30at.%, Chromium 36at.%, Silicon 4at.%, Nitrogen 30at.%;

[0024] Titanium 60at.%, Chromium 6at.%, Silicon 4at.%, Nitrogen 30at.%;

[0025] Titanium 30at.%, Chromium 6at.%, Silicon 14at.%, Nitrogen 50at.%;

[0026] Titanium 30at.%, Chromium 20at.%, Silicon 20at.%, Nitrogen 30at.%;

[0027] Titanium 30at.%, Chromium 26at.%, Silicon 14at.%, Nitrogen 30at.%;

[0028] The cutting tool substrate pretreatment process involved in the inve...

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Abstract

The invention discloses a nano composite titanium-chromium-silicon nitride cutter coat and a preparation method thereof. The cutter matrix is WC / Co hard alloy, and the coat is a titanium-chromium-silicon nitride coat containing a transition layer, wherein the coat contains titanium, chromium, silicon and nitrogen elements; and the size of crystalline grains is 5 to 15 nanometers, the thickness of the coat is 1 to 4 microns, the micro hardness of the coat is 26GPa, and the high-temperature stability reaches over 1,068 DEG C. A nano composite titanium-chromium-silicon nitride coat cutter is a coat cutter prepared in a mode of combining ion plating and sputter-plating, and is suitable for cutting and processing high-hardness steel materials at a high speed.

Description

technical field [0001] The invention relates to a nano-composite titanium-chromium-silicon-nitride tool coating coated by physical vapor deposition technology and a preparation method thereof. Background technique [0002] Hard tool coating is a layer of high hardness, high wear resistance metal or non-metallic compound of several microns on the surface of cemented carbide or high-speed steel tool substrate by physical or chemical vapor deposition method. To reduce the diffusion and chemical reaction between the tool and the workpiece, protect the tool matrix material, and improve the wear resistance and cutting hardness of the tool. [0003] Since the advent of coated tools, tool coating technology has achieved rapid development, and there are more and more types of coatings. The early simple TiN and TiC coatings have a microhardness of about HV 2300 and an application temperature of 500-600°C. Compared with high-speed steel or hard alloy materials, they have higher mechan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/34C23C14/06
Inventor 王成勇成晓玲余东海张凤林匡同春
Owner GUANGDONG UNIV OF TECH
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