mo of a nickel base alloy as the binder phase 2 nib 2 Base cermet and preparation method thereof

A nickel-based alloy and metal-based technology, applied in the field of Mo2NiB2-based cermet materials, can solve the problems of large shrinkage, uneven shrinkage, and easy distortion of the billet, and achieve the effects of good toughness, less internal defects, and high strength

Active Publication Date: 2017-07-28
ADVANCED TECHNOLOGY & MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Another technical problem to be solved by the present invention is to prepare Mo by hot isostatic pressing in the prior art 2 NiB 2 When using metal-ceramics, the shrinkage of the metal-ceramic billet is large, the shrinkage is uneven, and it is easy to distort and deform; and then a kind of billet shrinkage is uniform, regular, and not easy to distort. The hot isostatic pressing process prepares nickel-based alloys as the bonding phase. Mo 2 NiB 2 cermet-based approach

Method used

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  • mo of a nickel base alloy as the binder phase <sub>2</sub> nib <sub>2</sub> Base cermet and preparation method thereof
  • mo of a nickel base alloy as the binder phase <sub>2</sub> nib <sub>2</sub> Base cermet and preparation method thereof
  • mo of a nickel base alloy as the binder phase <sub>2</sub> nib <sub>2</sub> Base cermet and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Mix 1945g MoB powder, 955g NiB powder, 1404g Mo powder and 1995g Ni powder with 100g glucose, 30g polymethyl methacrylate, 20g polyvinyl butyral and 1500g absolute ethanol, and ball mill for 10h Obtain a slurry with a solid content of 45 vol%;

[0041] Among them, the synthesis method of MoB is: mixing Mo powder and B powder at a molar ratio of 1:1, then ball milling for 2 hours, and then synthesizing in a self-propagating synthesizer in an argon atmosphere with a synthesis pressure of 0.1 MPa; the synthesis of NiB The method is: Ni powder and B powder are mixed according to a molar ratio of 1:1 and then ball milled for 2 hours, and then synthesized in a self-propagating synthesizer in an argon atmosphere at a synthesis pressure of 0.1MPa;

[0042] (2) The slurry is made by a pressure spray drying granulator, and the conditions are that the spray pressure is 0.6MPa and the inlet temperature of the drying tower is 180°C;

[0043] (3) Treat the powder obtained by spray dryi...

Embodiment 2

[0047] (1) Mix 2918g of MoB powder, 1909g of NiB powder, 100g of B powder, 3882g of Mo powder and 4891g of Ni powder with 200g of glucose, 100g of polymethyl methacrylate, 100g of polyvinyl butyral and 2500g of absolute ethanol. , Vibrating mill for 30 hours to obtain a slurry with a solid content of 60 vol%;

[0048] Among them, the synthesis method of MoB is: mixing Mo powder and B powder at a molar ratio of 1.1:1 and then ball milling for 2 hours, and then synthesizing in a self-propagating synthesizer in an argon atmosphere with a synthesis pressure of 5MPa; the synthesis method of NiB It is: Ni powder and B powder are mixed according to a molar ratio of 1.2:1 and then ball milled for 2h, and then synthesized in a self-propagating synthesizer in an argon atmosphere, the synthesis pressure is 5MPa;

[0049] (2) The slurry is made by a pressure spray drying granulator, and the conditions are that the spray pressure is 1.5MPa and the inlet temperature of the drying tower is 220°C;...

Embodiment 3

[0054] (1) Mix 1945g MoB powder, 1909g NiB powder, 100gB powder, 2255gMo powder and 1391g Ni powder, and mix with 150g glucose, 50g polymethyl methacrylate, 50g polyvinyl butyral and 2000g absolute ethanol , Vibrating mill for 20 hours to obtain a slurry with a solid content of 50vol%;

[0055] Among them, the synthesis method of MoB is: Mo powder and B powder are mixed according to a molar ratio of 1.1:1 and then ball milled for 2 hours, and then synthesized in a self-propagating synthesizer in an argon atmosphere with a synthesis pressure of 3MPa; the synthesis method of NiB It is: Ni powder and B powder are mixed according to a molar ratio of 1.1:1 and then ball milled for 2h, and then synthesized in a self-propagating synthesizer in an argon atmosphere, the synthesis pressure is 4MPa;

[0056] (2) The slurry is made into powder with a pressure spray drying granulator, and the conditions are that the spray pressure is 1MPa and the inlet temperature of the drying tower is 200°C; ...

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PUM

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Abstract

The invention discloses a Mo2NiB2 base metal ceramic with a nickel base alloy serving as a binding phase. The Mo2NiB2 base metal ceramic is prepared from multiple of MoB powder, NiB powder, Mo powder, B powder and Ni powder. By weight, 3.5-7 parts of B, 31.5-65 parts of Mo and 28-65 parts of Ni are mixed, and a proper amount of glucose, a proper number of binding agent and a proper number of dispersion medium are added in the mixture. The invention further discloses a preparing method of the Mo2NiB2 base metal ceramic. The preparing method includes the steps that multiple of the MoB powder, the Nib powder, the Mo powder, the B powder and the Ni powder are evenly mixed with the glucose, the binding agent and the dispersion medium to obtain sizing; spray drying and pelletizing are conducted; the powder is treated in the hydrogen atmosphere at the temperature being 900-1100 DEG C; and then the powder is packed into a machined cover to be subjected to hot isostatic pressing, wherein the temperature ranges from 1100 DEG C to 1300 DEG C, and the pressure ranges from 100 MPa to 200 MPa. The prepared Mo2NiB2 base metal ceramic material is small in oxide inclusion amount, high in material strength and high in toughness, and a blank is shrunk evenly and regularly in the hot isostatic pressing process and is not likely to twist or deform.

Description

Technical field [0001] The invention relates to a Mo with a nickel-based alloy as a binder phase 2 NiB 2 Metal ceramic materials and preparation methods of such materials belong to the technical field of cermet materials. Background technique [0002] Tools, molds and other wear-resistant and corrosion-resistant processing equipment used in the industrial field are often made of traditional cemented carbide. The hard phases in cemented carbide are mostly tungsten carbide or tungsten carbide and titanium carbide, titanium nitride, and carbon nitride. A composite material composed of one or more of titanium carbide, vanadium carbide and tantalum carbide. However, the manufacture of cemented carbide mainly relies on metallic tungsten, and metallic tungsten as a scarce strategic reserve resource, its development and application will be restricted at this stage and in the future, resulting in limited cemented carbide production and unable to adapt to industry The growing demand for e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C29/14C22C1/05
Inventor 林同伟刘慧渊牛山廷张岳香孙继洲陈硕
Owner ADVANCED TECHNOLOGY & MATERIALS CO LTD
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