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Al2O3-cBN-based ceramic cutter material and preparation method thereof

A ceramic cutting tool, al2o3-cbn technology, applied in the field of ceramic cutting tools, can solve the problems of low bonding strength of cBN physical properties, low cBN content, unable to give full play to the advantages of cBN high hardness, etc., to improve the density and mechanical properties, cBN The effect of increasing the content and increasing the hardness

Pending Publication Date: 2022-01-04
ZHENGZHOU UNIVERSITY OF AERONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is: for existing Al 2 o 3 The content of cBN in the base ceramic cutting tool material is not high, and the advantages of high hardness of cBN cannot be fully utilized to overcome the phenomenon of Al 2 o 3 The problem of low bonding strength caused by the mismatch of physical properties with cBN, providing Al 2 o 3 -cBN-based ceramic tool material and its preparation method, by adopting the alternating load loading mode of oscillating sintering, using TiCN as a binder to promote cBN and Al 2 o 3 The interfacial combination between them can obtain high-performance Al with higher cBN content 2 o 3 -cBN-based ceramic tool material can be widely used in processing difficult-to-machine materials such as superalloys

Method used

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  • Al2O3-cBN-based ceramic cutter material and preparation method thereof
  • Al2O3-cBN-based ceramic cutter material and preparation method thereof
  • Al2O3-cBN-based ceramic cutter material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: Al 2 o 3 -cBN-based ceramic tool material, made of raw powder Al 2 o 3 , cBN and TiCN composition; where Al 2 o 3 The volume content of cBN is 70%, the volume content of cBN is 20%, and the volume content of TiCN is 10%. The microstructure of cBN in the raw powder is cubic phase, and the carbon-nitrogen ratio of TiCN in the raw powder is 7:3.

[0030] al 2 o 3 -The preparation method of cBN base ceramic cutter material, comprises the following steps:

[0031] S1: Prepare the raw material powder, according to the volume ratio of the raw material powder in the ceramic tool material, weigh Al 2 o 3 powder, cBN powder and TiCN powder; where Al 2 o 3 The particle size of the powder is 0.1 μm, that of the cBN powder is 1 μm, and that of the TiCN powder is 0.5 μm.

[0032] S2: Configure a dispersant solution, dissolving ammonium citrate in deionized water to make a dispersant solution; wherein the quality of ammonium citrate accounts for 0.4% of the total...

Embodiment 2

[0037] Example 2: Al 2 o 3 -cBN-based ceramic tool material, made of raw powder Al 2 o 3 , cBN and TiCN composition; where Al 2 o 3 The volume content of cBN is 50%, the volume content of cBN is 30%, and the volume content of TiCN is 20%. The microstructure of cBN in the raw material powder is cubic phase, and the carbon-nitrogen ratio of TiCN in the raw material powder is 7:3.

[0038] al 2 o 3 -The preparation method of cBN base ceramic cutter material, comprises the following steps:

[0039] S1: Prepare the raw material powder, according to the volume ratio of the raw material powder in the ceramic tool material, weigh Al 2 o 3 powder, cBN powder and TiCN powder; where Al 2 o 3 The particle size of the powder is 0.05 μm, that of the cBN powder is 0.5 μm, and that of the TiCN powder is 0.05 μm.

[0040] S2: Configure a dispersant solution, dissolving ammonium citrate in deionized water to make a dispersant solution; wherein the quality of ammonium citrate accounts...

Embodiment 3

[0044] Example 3: Al 2 o 3 -cBN-based ceramic tool material, made of raw powder Al 2 o 3 , cBN and TiCN composition; where Al 2 o 3 The volume content of cBN is 80%, the volume content of cBN is 15%, and the volume content of TiCN is 5%. The microstructure of cBN in the raw material powder is cubic phase, and the carbon-nitrogen ratio of TiCN in the raw material powder is 7:3.

[0045] al 2 o 3 -The preparation method of cBN base ceramic cutter material, comprises the following steps:

[0046] S1: Prepare the raw material powder, according to the volume ratio of the raw material powder in the ceramic tool material, weigh Al 2 o 3 powder, cBN powder and TiCN powder; where Al 2 o 3 The particle size of the powder is 0.05 μm, that of the cBN powder is 3 μm, and that of the TiCN powder is 0.1 μm.

[0047] S2: Configure a dispersant solution, dissolving ammonium citrate in deionized water to make a dispersant solution; wherein the quality of ammonium citrate accounts for...

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Abstract

The invention discloses an Al2O3-cBN-based ceramic cutter material and a preparation method thereof, and belongs to the technical field of ceramic cutters. The ceramic cutter material comprises the following components in percentage by volume: 50%-80% of Al2O3, 10%-30% of cBN and 5%-20% of TiCN, wherein the sum of the volume percentages of Al2O3, cBN and TiCN is 100%. The preparation method of the material comprises the following steps: respectively weighing Al2O3 powder, cBN powder and TiCN powder according to the volume ratio of the raw material powder; dissolving ammonium citrate in deionized water to prepare a dispersing agent solution; ball-milling and mixing the raw material powder of each component and the dispersing agent solution, and conducting drying to obtain a mixed material; and putting the mixed material into a mold for oscillation pressure sintering. According to the invention, the problem of low bonding strength caused by mismatching of physical properties of Al2O3 and cBN is improved through TiCN, and dynamic pressure sintering is realized on the mixed material by adopting an oscillation pressure sintering technology in the preparation method, so that the high-performance Al2O3-based ceramic cutter material with high cBN content is obtained, and the high-performance Al2O3-based ceramic cutter material can be widely applied to the field of processing of difficult-to-process materials such as high-temperature alloys and the like.

Description

technical field [0001] The invention relates to a ceramic cutting tool material and a preparation method thereof, in particular to Al 2 o 3 -cBN-based ceramic cutting tool material and preparation method thereof, belonging to the technical field of ceramic cutting tools. Background technique [0002] With the increasing application of high-strength superalloys in high-tech fields such as national defense and military industry, aerospace, electronic information, and high-end equipment manufacturing, problems such as increased cutting force, increased cutting temperature, and reduced tool durability during the cutting process have become prominent. With its high hardness, good wear resistance and heat resistance, excellent chemical stability, and high cutting speed, ceramic cutting tools have attracted widespread attention and become a new type of high-efficiency, high-precision, energy-saving, and green products. [0003] al 2 o 3 Ceramics have excellent high temperature ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/622C04B35/645
CPCC04B35/10C04B35/622C04B35/645C04B2235/386C04B2235/3856C04B2235/602C04B2235/6562C04B2235/6567C04B2235/77C04B2235/96
Inventor 张梦雯杨陆通樊磊何俊霖
Owner ZHENGZHOU UNIVERSITY OF AERONAUTICS
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