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NbC-based lightweight metal cermet alloy with high wearing resistance and toughness and preparation method thereof

A cermet, strong toughness technology, applied in the field of cermet material preparation, can solve the problems of high specific weight, insufficient high temperature wear resistance of WC base, high toxicity of WC-Co composite powder, etc., to improve alloy hardness and high temperature resistance, Effect of improving wear resistance and flexural strength

Active Publication Date: 2019-03-01
ZIGONG CEMENTED CARBIDE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above-mentioned deficiencies in cost and performance of traditional hard alloys, the purpose of the present invention is to provide a high wear-resistant strong toughness NbC-based light-weight cermet alloy to solve the problem of high price of binder phase Co and high toxicity of WC-Co composite powder. And the problem of insufficient high temperature wear resistance and large specificity of WC base

Method used

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  • NbC-based lightweight metal cermet alloy with high wearing resistance and toughness and preparation method thereof
  • NbC-based lightweight metal cermet alloy with high wearing resistance and toughness and preparation method thereof
  • NbC-based lightweight metal cermet alloy with high wearing resistance and toughness and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] NbC micron powder (particle size is FSSS1.2) weighs 595g, (Nb, 5Mo, 1Zr) C submicron powder (particle size is FSSS0.8) weighs 100g, powder particle size is FSSS0.8 WC powder weighs 100g, powder Ni powder with a particle size of FSSS1.2 weighs 150g, Mo 2 C micron powder (particle size is FSSS1.5) weighs 50g, ZrC micron powder (particle size is FSSS1.2) weighs 2.5g, Cr 3 C 2 The micron powder (particle size is FSSS1.2) weighs 2.5g. Weigh 800ml of absolute ethanol as the ball milling medium, weigh 20g of polyvinyl alcohol as the molding agent, and weigh 1.5g of acetholamine as the dispersant.

[0038] (1) Ball mill mixing: Put the raw material powder prepared according to step (1) into YG6X alloy balls with a diameter of 10mm and absolute ethanol as the ball milling medium, and add 1.5g of dispersant acethamine and 20g of forming agent polyvinyl alcohol at the same time Put it into a clean stainless steel ball mill jar, and then ball mill it on a roller ball mill for 72...

Embodiment 2

[0045] NbC micron powder (particle size is FSSS1.2) weighs 646g, the WC powder that powder particle size is FSSS0.8 weighs 120g, the Ni powder that powder particle size is FSSS1.2 weighs 180g, Mo 2 C micron powder (particle size is FSSS1.5) weighs 50g, ZrC micron powder (particle size is FSSS1.2) weighs 4g. Weigh 800ml of absolute ethanol as the ball milling medium, weigh 20g of polyvinyl alcohol as the molding agent, and weigh 4g of acetholamine as the dispersant.

[0046] (1) Ball mill mixing: Put the raw material powder prepared according to step (1) into YG6X alloy balls with a diameter of 10mm and absolute ethanol as the ball milling medium, and add 1.5g of dispersant acethamine and 20g of forming agent polyvinyl alcohol at the same time Put it into a clean stainless steel ball mill jar, and then ball mill it on a roller ball mill for 96 hours, the ball-to-material ratio is 8:1, and the ball milling speed is 70r / min. After the wet abrasive is taken out, dry it in a vacuu...

Embodiment 3

[0053] NbC submicron powder (particle size is FSSS0.8) weighs 665g, (Nb,5Mo,1Zr)C submicron powder (particle size is FSSS0.8) weighs 50g, powder particle size is FSSS1.2 WC powder weighs 100g, Ni powder with powder particle size of FSSS1.2 weighs 120g, Mo 2 C micron powder (particle size is FSSS1.5) weighs 60g, ZrC micron powder (particle size is FSSS1.2) weighs 2.5g, VC micron powder (particle size is FSSS1.0) weighs 2.5g. Weigh 800ml of absolute ethanol as the ball milling medium, weigh 20g of polyvinyl alcohol as the molding agent, and weigh 7.5g of acetholamine as the dispersant.

[0054] (1) Ball mill mixing: Put the raw material powder prepared according to step (1) into YG6X alloy balls with a diameter of 10mm and absolute ethanol as the ball milling medium, and add 1.5g of dispersant acethamine and 20g of forming agent polyvinyl alcohol at the same time Put it into a clean stainless steel ball mill jar, and then mill it on a roller ball mill for 144 hours with a ball-...

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Abstract

The invention relates to the technical field of preparation of metal cermet materials and relates to an NbC-based lightweight metal cermet alloy with high wearing resistance and toughness and a preparation method thereof. The metal cermet alloy comprises, by mass, 35-90% of NbC, 5-55% of (Nb, M) C, 5-30% of WC, 0-30% of TiC, 0-30% of TiN, 0-25% of Ti(C,N), 0-20% of Ni, 0-20% of Mo, 0-20% of Cr, 0-15% of Fe, 0-15% of Co, 0-20% of Mo2C, 0-15% of TaC, 0-2.5% of ZrC serving as a grain inhibitor, 0-5% of VC, 0-5% of Cr2C3, 0-1.2% of carbon black and other raw materials. The materials above are prepared into a mixture, the mixture is loaded into a stainless steel ball mill tank, absolute ethyl alcohol or hexane and other media, stearic acid and paraffin or PVA are added for ball milling, siftingand mold pressing to obtain a blank material, and the blank material is sintered and cooled to obtain the NbC-based lightweight metal cermet alloy with the high wearing resistance and toughness. TheNbC-based lightweight metal cermet alloy prepared by means of the method can overcome the defects that conventional WC hard alloys are low in high-temperature wearing resistance and large in specificgravity; moreover, the NbC-based lightweight metal cermet alloy is low in price, simple in process and suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of cermet material preparation, in particular to a high-wear-resistant, strong-toughness NbC-based lightweight cermet alloy and a preparation method thereof. Background technique [0002] Cemented carbide has high hardness, strength, wear resistance and corrosion resistance. It is used to manufacture cutting tools, knives, cobalt tools and wear-resistant parts. It is widely used in military industry, aerospace, machining, metallurgy, oil drilling , mining tools, electronic communications, construction and other fields, along with the development of downstream industries, the market demand for cemented carbide continues to increase. And in the future, the manufacturing of high-tech weapons and equipment, the advancement of cutting-edge science and technology, and the rapid development of nuclear energy will greatly increase the demand for cemented carbide products with high-tech content and high-quality stabi...

Claims

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Application Information

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IPC IPC(8): C22C29/06C22C29/02C22C1/05C22C1/10
CPCC22C1/051C22C29/005C22C29/02C22C29/06C22C29/067
Inventor 董定乾杨伟廖军时凯华唐启佳郑江
Owner ZIGONG CEMENTED CARBIDE CORP
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