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A kind of WC base cemented carbide material based on high entropy alloy and preparation method thereof

A high-entropy alloy and cemented carbide technology, which is applied in the field of cemented carbide material preparation, can solve the problems of corrosion resistance, poor toughness, low wear resistance, and the production cost of multi-toxic metals, so as to improve the hardness and resistance of alloys. The effect of bending strength, reduction of expansion coefficient, microstructure and composition uniformity

Active Publication Date: 2020-10-02
SHENZHEN QIANYAN EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the problems referred to above, the first object of the present invention is to provide a WC-based cemented carbide material based on high-entropy alloys, to solve the defects of low wear resistance, corrosion resistance and high toughness of current WC cemented carbides, and the current In the production process of WC cemented carbide, more toxic metals are used and the production cost is higher; another object of the present invention is to provide a preparation method of WC-based cemented carbide material based on high-entropy alloy, so as to improve the WC hard alloy. The comprehensive properties of high-quality alloys are suitable for large-scale industrial production

Method used

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  • A kind of WC base cemented carbide material based on high entropy alloy and preparation method thereof
  • A kind of WC base cemented carbide material based on high entropy alloy and preparation method thereof
  • A kind of WC base cemented carbide material based on high entropy alloy and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0039] (1) WC micron powder particle size is FSSS1.2 and weighs 750g, CrFeCoNiAl micron powder particle size is FSSS1.5 and weighs 135g, Co micron powder particle size is FSSS1.5 and weighs 100g, TaC micron powder particle size is FSSS1.5 and weighs 10g , Cr powder particle size FSSS1.5 2 C 3 Powder weighing 5g. Weigh 350ml of absolute ethanol as the ball milling medium, weigh 35g of polyvinyl alcohol as the molding agent, and weigh 8g of acetholamine as the dispersant.

[0040] The raw material powder prepared as above is put into the YG6X alloy ball with a diameter of 10mm and absolute ethanol as the ball milling medium, and at the same time, 8 g of the dispersant acethamine and 350 ml of the forming agent polyvinyl alcohol are put into a clean stainless steel ball mill jar, and then Mill on a roller ball mill for 74 hours, the ball-to-material ratio is 6:1, and the milling speed is 90r / min. After the wet abrasive is taken out, it is dried in a vacuum drying oven at 80°C ...

Embodiment 2

[0047] WC micron powder particle size is FSSS1.5 and weighs 800g, CrMnFeCoNi micron powder particle size is FSSS2.8 and weighs 82g, Co micron powder particle size is FSSS1.5 and weighs 100g, TaC micron powder particle size is FSSS1.5 and weighs 10g, powder particle size Cr for FSSS1.5 2 C 3 Powder weighing 5g. Weigh 350ml of absolute ethanol as the ball milling medium, weigh 35g of polyvinyl alcohol as the molding agent, and weigh 8g of acetholamine as the dispersant.

[0048] Put the above raw material powders into YG6X alloy balls with a diameter of 10mm and absolute ethanol as the ball milling medium, add 8g of dispersant acetholamine and 350ml of forming agent polyvinyl alcohol into a clean stainless steel ball milling tank, and then Mill on the ball mill for 64 hours, the ratio of ball to material is 4:1, and the speed of ball milling is 110r / min. After the wet abrasive is taken out, it is dried in a vacuum drying oven at 80°C for 4 hours, homogenized and crushed, and ...

Embodiment 3

[0055] WC micron powder particle size is FSSS2.5 and weighs 800g, CoCrCuFeNi micron powder particle size is FSSS25 and weighs 80g, Co micron powder particle size is FSSS1.5 and weighs 100g, TaC micron powder particle size is FSSS1.5 and weighs 10g, VC micron powder particle size is 10g Weigh 7.5g for FSSS1.5, and weigh 2.5g for ZrC powder with powder particle size of FSSS1.5. Weigh 350ml of absolute ethanol as the ball milling medium, weigh 35g of polyvinyl alcohol as the molding agent, and weigh 8g of acetholamine as the dispersant.

[0056] The raw material powder prepared as above is put into the YG6X alloy ball with a diameter of 10mm and absolute ethanol as the ball milling medium, and at the same time, 8 g of the dispersant acethamine and 350 ml of the forming agent polyvinyl alcohol are put into a clean stainless steel ball mill jar, and then Ball milling on the roller ball mill for 80 hours, the ball-to-material ratio is 6:1, and the ball milling speed is 90r / min. Aft...

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Abstract

The invention relates to the technical field of hard alloy material preparing, in particular to a WC-based hard alloy material based on a high-entropy alloy and a preparing method of the WC-based hardalloy material. The WC-based hard alloy material is prepared through a strengthening phase, a bonding phase and a hard phase in the manner of ball milling, atomizing drying, die pressing blank forming, gradient technology sintering and heat treatment, wherein by weight percent, the strengthening phase comprises 3%-35% of the high-entropy alloy, the bonding phase comprises 0%-30% of Co, 0%-30% ofNi, 0%-30% of Fe and 0%-15% of Cr, the hard phase comprises a composite material including 55%-97% of WC, 0%-10% of TaC / NbC, 0%-5% of VC / ZrC and 0%-5% of Cr2C3. The provided high-entropy alloy strengthened WC-based hard alloy material is uniform in microstructure and component, stable in quality and suitable for large-scale industry production, and has good abrasion resistance, tenacity performance, oxidization resistance and excellent comprehensive performance and mechanical performance.

Description

technical field [0001] The invention belongs to the technical field of hard alloy material preparation, in particular to a high-entropy alloy-based WC-based hard alloy material and a preparation method thereof. Background technique [0002] Cemented carbide has high hardness, strength, toughness and wear resistance, and its preparation materials are widely used in cutting, drilling, mining, machining and wear-resistant parts. The preparation method of cemented carbide mainly uses one or more refractory metal carbides with high hardness and high modulus as the hard matrix phase, and transition metals or other alloys as the binder phase, and is sintered into a multi- Composite materials. After decades of development, my country has established a relatively complete cemented carbide industrial system, and its total alloy output ranks first in the world. Most of the products in China are still mainly in the middle and low end of the market, and their technical barriers are rela...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C29/08C22C1/05C22F1/00
CPCC22C1/051C22C29/067C22C29/08C22F1/00
Inventor 董定乾孙敬鸿向新杨伟
Owner SHENZHEN QIANYAN EQUIP