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CoCrNiCuMn-TiN-TiC-WC composite material and preparation method thereof

A composite material, CH4N2O technology, applied in the field of material composites, can solve problems such as poor bonding, and achieve the effect of improving hardness and toughness, good mass transfer ability, and excellent mechanical properties

Active Publication Date: 2020-09-15
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In the above two studies, only Ti(C,N) and high-entropy alloys were mixed and sintered, and the problems of poor bonding between high-entropy alloys and Ti(C,N) were not solved.

Method used

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  • CoCrNiCuMn-TiN-TiC-WC composite material and preparation method thereof
  • CoCrNiCuMn-TiN-TiC-WC composite material and preparation method thereof
  • CoCrNiCuMn-TiN-TiC-WC composite material and preparation method thereof

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preparation example Construction

[0053] The invention also discloses a preparation method of a CoCrNiCuMn-TiN-TiC-WC composite material, comprising the following steps:

[0054] S1, prepare CoCrNiCuMn powder with finer than 150nm;

[0055] Co, Cr, Ni, Cu, Mn powders are ball milled to obtain CoCrNiCuMn powders with a diameter of 150nm.

[0056] S2, prepare 150nm finer TiNx powder;

[0057] Ti powder and CH in preset molar ratio 4 N 2 O is ball milled to produce fine TiNx powders with a thickness of 150nm, wherein x=0.3~0.9 or x=1.1~1.3;

[0058] S3, preparing TiC powder finer than 150nm;

[0059] The TiC powder is ball-milled to obtain TiC powder finer than 150nm;

[0060] S4, preparing 150nm finer WC powder;

[0061] Ball mill the WC powder to obtain WC powder with a fineness of 150nm or less;

[0062] S5. CoCrNiCuMn-TiN-TiC-WC composite material is obtained by mixing materials, pre-pressing, and vacuum hot-pressing sintering;

[0063] Weigh the CoCrNiCuMn powder with a mass percentage of 5-20wt.%, t...

Embodiment 1

[0091] The weighing of the raw material formula is carried out according to the following percentages:

[0092] Table 3 prepares the raw material and its proportion of 40g CoCrNiCuMn-TiN-TiC-WC composite material

[0093]

[0094] S1. In a glove box filled with argon, mix 4.05gCo, 3.65gCr, 4.04gNi, 4.41gCu and 3.85gMn into a WC cemented carbide ball mill jar. The mass ratio of the ball to the material is 10:1, and the speed is 600r / min, the ball milling time is 50h, stop every 5h for 30min to dissipate heat, stop every 10h to scrape off the raw materials sticking to the ball and the inner wall of the tank, and then continue ball milling to obtain CoCrNiCuMn powder with a fineness of 150nm or less.

[0095] S2. Mix 16.55g Ti powder and 3.45gCH in a glove box filled with argon 4 N 2 O is put into a WC cemented carbide ball mill tank, the mass ratio of the ball and the material is 10:1, the rotating speed is 500r / min, the ball milling time is 30h, and the machine is stopped...

Embodiment 2

[0103] The weighing of the raw material formula is carried out according to the following percentages:

[0104] Table 5 prepares the raw material and its proportion of 40g CoCrNiCuMn-TiN-TiC-WC composite material

[0105]

[0106] S1. Mix 4.05gCo, 3.65gCr, 4.04gNi, 4.41gCu and 3.85gMn into a WC cemented carbide ball mill in a glove box filled with argon. The mass ratio of the ball to the material is 20:1, and the speed is 300r / Min, the ball milling time is 20h, stop every 5h for 30min to dissipate heat, stop every 10h to scrape off the raw materials sticking to the ball and the inner wall of the tank, and then continue the ball milling to obtain CoCrNiCuMn powder finer than 150nm.

[0107] S2, 16gTi powder and 4gCH were mixed in a glove box filled with argon 4 N 2 O is put into a WC cemented carbide ball mill tank, the mass ratio of the ball and the material is 20:1, the rotating speed is 200r / min, the ball milling time is 60h, the machine is shut down for 30min every 10...

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Abstract

The invention provides a CoCrNiCuMn-TiN-TiC-WC composite material and a preparation method thereof. The raw material formula of the composite material comprises CoCrNiCuMn, TiNx, TiC and WC, wherein xin TiNx is equal to 0.3-0.9 or equal to 1.1-1.3, the mass percent of CoCrNiCuMn is 5-20 wt.%, the mass percent of TiNx is 20-50 wt.%, the mass percent of WC is 2-10 wt.%, and the balance is TiC. Thepreparation method comprises the following steps: S1, preparing CoCrNiCuMn powder with the particle size of 150 nm or below; S2, preparing TiNx powder with the particle size of 150 nm or below; S3, preparing TiC powder with the particle size of 150 nm or below; S4, preparing WC powder with the particle size of 150 nm or below; and S5, carrying out mixing, prepressing and vacuum hot pressed sintering to prepare the CoCrNiCuMn-TiN-TiC-WC composite material. The composite material disclosed by the invention has high hardness and high toughness.

Description

technical field [0001] The invention relates to the field of material composite technology, in particular to a CoCrNiCuMn-TiN-TiC-WC composite material and a preparation method thereof. Background technique [0002] In recent years, high-entropy alloys (HEAs) have been widely studied due to their excellent properties. HEA composed of various principal components has a series of characteristics such as high entropy effect, lattice distortion effect, slow diffusion effect and cocktail effect, so that it has excellent physical, chemical and mechanical properties, such as high strength, high hardness, high resistance Abrasiveness, high corrosion resistance, high low temperature toughness, etc., so it can solve the problem of high hardness and insufficient toughness of cemented carbide, or even if it meets the problems of high hardness and high toughness, it cannot achieve oxidation resistance or corrosion resistance at high temperature, etc. question. [0003] Zhu Gang et al p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C29/16C22C1/05C22C1/10B22F9/04B22F3/10B22F3/14B22F3/24C22C30/02C22C29/02
CPCB22F3/1007B22F3/14B22F3/24B22F9/04B22F2003/247B22F2009/043C22C1/051C22C29/005C22C29/02C22C29/16C22C30/02
Inventor 邹芹李艳国王明智熊建超
Owner YANSHAN UNIV
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