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Compound cutting tool coating based on titanium diboride and preparation method thereof

A composite tool, titanium diboride technology, applied in the direction of tool, coating, metal material coating process for lathes, etc., to achieve the effects of good toughness, high electrical conductivity, thermal conductivity and electrical conductivity

Inactive Publication Date: 2014-06-11
北工(常熟)工业技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, TiB 2 The report of the base coating is mainly based on a single-layer structure, and metals are added to improve its toughness, and TiB with metal nickel will be added. 2 Coatings and diamond-like carbon (DLC) coatings combined to prepare multilayer structures as tool coatings have not been reported

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  • Compound cutting tool coating based on titanium diboride and preparation method thereof

Examples

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Effect test

Embodiment 1

[0024] This example provides a composite tool coating based on titanium diboride for attachment to a substrate 1, mainly consisting of TiB 2 - Ni layer 3 and DLC-Ni layer 4, also transition layer 2 between substrate 1 and composite tool coating. Among them, TiB 2 -Ni layer 3 refers to TiB 2 and Ni composite layer, the DLC-Ni layer 4 is a diamond-like carbon and Ni composite layer, which are alternately laminated and have a thickness of nanometer size. Thanks to TiB 2 -Ni layer and DLC-Ni layer are alternately stacked, and the high hardness and high electrical conductivity of DLC are used to make the composite tool coating have the advantages of good toughness, good thermal conductivity and electrical conductivity, and its hardness can reach 20GPa.

[0025] In this example, TiB 2 -Ni layer 3 is first attached to transition layer 2 (metallic Ni layer), followed by DLC-Ni layer 4 with TiB 2 -Ni layers 3 are alternately stacked. TiB 2 The thickness of -Ni layer 3 and DLC-Ni...

Embodiment 2

[0027] This example provides a method for preparing a titanium diboride-based composite tool coating, which specifically includes the following steps:

[0028] (a) Choose commercially available TiB with a purity of 99.9% 2 Ceramic targets, commercially available metal Ni targets with a purity of 99.99% and carbon targets were installed on a multi-target magnetron sputtering apparatus; Ultrasonic cleaning of the substrate with ethanol for 10-20 minutes, then air-dried at 80°C for 1-2 hours, and then installed on a multi-target magnetron sputtering apparatus;

[0029] (b) Check that the gas, electricity, and water circuits of the multi-target magnetron sputtering instrument are normal, then turn on the main power supply and start the mechanical pump. When the pressure in the deposition chamber and the sample chamber is below 10Pa, close the gap between the mechanical pump and the chamber. valve, open the flapper valve, start the molecular pump, unscrew the gate valve, when the...

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Abstract

The invention relates to a compound cutting tool coating based on titanium diboride and a preparation method of the compound cutting tool coating. The compound cutting tool coating comprises TiB2-Ni layers and DLC-Ni layers which are overlapped alternately, wherein the thicknesses of the TiB2-Ni layers and the DLC-Ni layers are of a nano grade; the preparation method of the compound cutting tool coating comprises the following steps in sequence: (a) respectively mounting a TiB2 source, a carbon source, a metal Ni source and a substrate on an instrument; (b) vacuuming the instrument, and heating the substrate to which the components are attached; (c) introducing an inert gas into the instrument, respectively setting the ratio and the parameters of the TiB2 source, the carbon source and the metal Ni source, and alternately opening and closing a TiB2 source and carbon source baffle, and performing physical vapor deposition for 30-300 minutes. According to the compound cutting tool coating based on titanium diboride, on one hand, the TiB2-Ni layers and the DLC-Ni layers are alternately overlapped, and by utilizing the characteristics of high hardness, high conductivity and the like of DLC, the compound cutting tool coating has the advantages of good toughness, good thermal conductivity and good electrical conductivity, and the hardness can be 20GPa; on the other hand, due to the special aluminum adhesion resistance of TiB2, a cutting tool is particularly applicable to dry cutting of aluminum alloy.

Description

technical field [0001] The invention relates to a composite tool coating, in particular to a titanium diboride-based composite tool coating and a preparation method thereof. Background technique [0002] Dry cutting technology is a major innovation to traditional production methods and a new clean manufacturing technology. The increasingly stringent environmental regulations around the world are conducive to accelerating the promotion and application of dry cutting technology; the development of various superhard and high temperature resistant tool materials and their coating technology has created extremely favorable conditions for dry cutting technology; the effective application of microlubrication devices The emergence of various standard cutting tools for small hole processing has enabled more and more applications in quasi-dry cutting aluminum alloys and various difficult-to-machine materials. It is an emerging green manufacturing technology. It is of great significa...

Claims

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Application Information

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IPC IPC(8): C23C14/06C23C14/22B23B27/14
Inventor 华云峰査钢强姚栋嘉王琳琳王晓明
Owner 北工(常熟)工业技术有限公司
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