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Cubic boron nitride complex, and preparation method and application thereof

A technology of cubic boron nitride and composites, applied in the field of materials, can solve problems such as the decrease in the bonding strength of abrasives and substrates

Inactive Publication Date: 2018-03-13
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the coating elements of the active material coating generally have active chemical properties, they are easily oxidized during storage and heating, which will undoubtedly lead to a decrease in the bonding strength between the abrasive and the matrix in the prepared cutting abrasive tool.

Method used

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  • Cubic boron nitride complex, and preparation method and application thereof
  • Cubic boron nitride complex, and preparation method and application thereof
  • Cubic boron nitride complex, and preparation method and application thereof

Examples

Experimental program
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preparation example Construction

[0231] The present invention also provides a method for preparing the cubic boron nitride complex, comprising the steps of:

[0232] 1) A mixture is provided, the mixture comprises a cubic boron nitride primary complex, an anti-oxidation coating raw material and an optional solvent, the cubic boron nitride primary complex comprises cubic boron nitride and is coated on the The active material coating on the outer surface of the cubic boron nitride;

[0233] 2) heat treating the mixture to obtain the cubic boron nitride complex.

[0234] In another preferred example, the solvent includes (but is not limited to): an organic solvent, water, or a combination thereof.

[0235] In another preferred example, the organic solvent includes (but not limited to): ethanol, acetone, or a combination thereof.

[0236] In another preferred example, the anti-oxidation coating raw materials include (but are not limited to): boron powder, boron-based alloy powder, or a combination thereof.

[...

Embodiment 1

[0311] Example 1 Preparation of Cubic Boron Nitride Primary Composite 1 Surface Plated with Titanium-Based Active Material Coating

[0312] Mix cubic boron nitride with a particle size of about 100 μm, crystalline sodium chloride, and powdered high-purity titanium-aluminum mixed powder (60wt% titanium content) in a mass ratio of 3:1:1. The mixing process Add a small amount of absolute ethanol to mix well. The resulting mixture is put into a salt bath furnace and evacuated to a vacuum degree of about 10 -2 Pascal, then filled with nitrogen, the gas pressure is 1Pa-120kPa, heated to 900°C at a heating rate of 5°C / min and kept for 30min, cooled to room temperature with the furnace, washed with water, and dried to obtain the initial complex 1.

[0313] result

[0314] SEM, EDS and other tests were carried out on the initial composite 1 prepared in Example 1.

[0315] figure 1 It is the SEM image of the initial composite 1 obtained in Example 1 of the present invention.

[031...

Embodiment 2

[0319] Example 2 Preparation of Cubic Boron Nitride Composite 1 Containing Titanium-Based Coating and Boron-Based Coating on the Surface

[0320] The average particle size obtained in Example 1 is 100 μm, the cubic boron nitride primary composite 1 (cBN) (the plating method is salt bath plating) and powdery amorphous high-purity boron coated with a titanium-based aluminum-containing coating on the surface The mass ratio is 5:1 and mixed evenly. The resulting mixture is put into a heating furnace and evacuated to a vacuum degree of about 10 -2 Pascal, and then heated to 900°C at a heating rate of 5°C / min and kept for 60 minutes, cooled to room temperature with the furnace, washed with water, and dried to obtain complex 1.

[0321] result

[0322] Performance tests such as SEM and EDS were performed on the complex 1 obtained in Example 2.

[0323] image 3 It is the SEM test result of the complex 1 obtained in Example 2.

[0324] from image 3 It can be seen that the thick...

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Abstract

The invention relates to a cubic boron nitride complex, and a preparation method and an application thereof. Specifically, the invention discloses the cubic boron nitride complex which comprises the following components: i) cubic boron nitride; ii) an active material coating bonded on the outer surface of the cubic boron nitride; and iii) an anti-oxidation coating bonded on the outer surface of the active material coating. The invention also discloses the preparation method and the application for the complex. The complex provided by the invention has excellent and durable bonding performancewith a metal matrix, and can greatly improve the quality and prolong the service life of a cubic boron nitride product. The preparation method for the complex is simple, environment-friendly and safe,and is significantly applicable to large-scale popularization.

Description

technical field [0001] The invention relates to the field of materials, in particular to a cubic boron nitride complex and its preparation method and application. Background technique [0002] At present, the superhard materials used in the field of machining are mainly diamond and cubic boron nitride. In comparison, diamond has high hardness and has high processing efficiency for materials such as glass and gemstones; while cubic boron nitride has a slightly lower hardness than diamond, but its thermal stability and chemical stability are significantly higher than diamond. , especially in the process of processing iron-based and nickel-based metals, cubic boron nitride will not undergo graphitization, so it can effectively guarantee the processing accuracy of materials and the service life of grinding tools. [0003] However, cubic boron nitride is not perfect in the field of mechanical processing. Due to its high chemical stability, it is difficult for the matrix material...

Claims

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Application Information

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IPC IPC(8): C04B35/5831C04B41/89C22C14/00
CPCC04B35/5831C04B41/009C04B41/52C04B41/89C04B2235/6562C04B2235/6567C22C14/00C04B41/5133C04B41/5006
Inventor 褚伍波江南李赫戴丹白华吕继磊马洪兵
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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