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Mo2NiB2 base metal ceramic with nickel base alloy serving as binding phase and preparing method of Mo2NiB2 base metal ceramic

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

Active Publication Date: 2016-02-03
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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  • Mo2NiB2 base metal ceramic with nickel base alloy serving as binding phase and preparing method of Mo2NiB2 base metal ceramic
  • Mo2NiB2 base metal ceramic with nickel base alloy serving as binding phase and preparing method of Mo2NiB2 base metal ceramic
  • Mo2NiB2 base metal ceramic with nickel base alloy serving as binding phase and preparing method of Mo2NiB2 base metal ceramic

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, mix 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 45vol%;

[0041] Among them, the synthesis method of MoB is: mix Mo powder and B powder according to the molar ratio of 1:1, ball mill for 2 hours, and then synthesize in argon atmosphere in a self-propagating synthesizer, and the synthesis pressure is 0.1MPa; the synthesis of NiB The method is: mix Ni powder and B powder according to the molar ratio of 1:1, ball mill for 2 hours, and then synthesize in a self-propagating synthesizer in an argon atmosphere, and the synthesis pressure is 0.1MPa;

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

[0043] (3) Treat the powder obtained ...

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, and mix with 200g of glucose, 100g of polymethyl methacrylate, 100g of polyvinyl butyral and 2500g of absolute ethanol , Vibration mill grinding for 30h to obtain a slurry with a solid content of 60vol%;

[0048] Among them, the synthesis method of MoB is: mix Mo powder and B powder according to the molar ratio of 1.1:1, ball mill for 2 hours, and then synthesize in argon atmosphere in a self-propagating synthesizer, and the synthesis pressure is 5MPa; the synthesis method of NiB It is: mix Ni powder and B powder according to the molar ratio of 1.2:1, ball mill for 2 hours, and then synthesize in a self-propagating synthesizer in an argon atmosphere, and the synthesis pressure is 5MPa;

[0049] (2) The slurry is pulverized by a pressure-type spray drying granulator, and the conditions are that the spray pressure is 1.5MPa, and the air inlet temperature of the d...

Embodiment 3

[0054] (1) Mix 1945g MoB powder, 1909gNiB powder, 100gB powder, 2255gMo powder and 1391gNi powder with 150g of glucose, 50g of polymethyl methacrylate, 50g of polyvinyl butyral and 2000g of absolute ethanol , Vibration grinding for 20h to obtain a slurry with a solid content of 50vol%;

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

[0056] (2) The slurry is pulverized by a pressure-type spray drying granulator, and the conditions are that the spray pressure is 1MPa, and the air inlet temperature of the drying tower is 200°C;

[0057] (3) T...

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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 present invention relates to a kind of Mo with nickel base alloy as binding phase 2 NiB 2 A metal-ceramic material and a preparation method of the material belong to the technical field of metal-ceramic materials. Background technique [0002] Cutting 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 phase in cemented carbide is mostly tungsten carbide or tungsten carbide and titanium carbide, titanium nitride, carbon nitrogen A composite material composed of one or more of titanium carbide, vanadium carbide and tantalum carbide. However, the manufacture of cemented carbide mainly depends on metal tungsten, and metal tungsten is a scarce strategic reserve resource, its development and application will be restricted at this stage and in the future, resulting in limited production of cemented carbide, unable to adapt to industrial ...

Claims

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Application Information

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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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