A kind of molybdenum-copper alloy with low molybdenum content and preparation method thereof

A molybdenum-copper alloy, content technology, applied in metal processing equipment, transportation and packaging, etc., can solve the problems of low-molybdenum-content molybdenum-copper alloy microstructure, difficulty in fully guaranteeing performance, large fluctuations in product quality, etc., and achieve high surface potential energy , Shorter sintering time, better fluidity

Active Publication Date: 2020-11-06
安泰天龙钨钼科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies and defects of the prior art, one of the purposes of the present invention is to provide a method for preparing a molybdenum-copper alloy with low molybdenum content, which overcomes the shortcomings of the existing preparation method, such as high cost, low efficiency, and large fluctuations in product quality.
[0006] The second object of the present invention is to provide a low-molybdenum-content molybdenum-copper alloy with uniform structure, high compactness, and good performance consistency, so as to solve the problem that the existing low-molybdenum-content molybdenum-copper alloy has uneven structure and difficult to fully guarantee the performance

Method used

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  • A kind of molybdenum-copper alloy with low molybdenum content and preparation method thereof
  • A kind of molybdenum-copper alloy with low molybdenum content and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0032] The preparation of embodiment 1Mo50Cu50 alloy comprises steps:

[0033] 1. Molybdenum powder treatment

[0034] The prepared Fisherman's particle size is 4.0μm, and the bulk density is 1.3g / cm 3 The molybdenum powder is crushed by a jet crusher to obtain non-agglomerated molybdenum powder.

[0035] 2. Spray granulation

[0036] Take the Fischer particle size as 4.0μm and the bulk density as 3.0g / cm 3The superfine copper powder of step 1 is mixed with the non-agglomerated molybdenum powder of step 1, water and PEG20000 binding agent to be slurry. Among them: the mass ratio of non-agglomerated molybdenum powder: copper powder is 1:1, the amount of water added is 25% of the total mass of non-agglomerated molybdenum powder and copper powder; the amount of binder added is the total mass of non-agglomerated molybdenum powder and copper powder 3%. The slurry is spray-dried and granulated under a nitrogen protective atmosphere. The nozzle diameter used for spray granulatio...

Embodiment 2

[0048] The preparation of embodiment 2Mo30Cu70 alloy

[0049] 1. Molybdenum powder treatment

[0050] The prepared Fisherman's particle size is 3.5μm, and the bulk density is 1.2g / cm 3 The molybdenum powder is crushed by a jet crusher to obtain non-agglomerated molybdenum powder.

[0051] 2. Spray granulation

[0052] Take the Fischer particle size as 3.5μm and the bulk density as 2.5g / cm 3 The superfine copper powder of step 1 is mixed with the non-agglomerated molybdenum powder of step 1, water and PEG20000 binding agent to be slurry. Among them: the mass ratio of non-agglomerated molybdenum powder: copper powder is 3:7, the amount of water added is 20% of the total mass of non-agglomerated molybdenum powder and copper powder; the amount of binder added is the total mass of non-agglomerated molybdenum powder and copper powder 2%. The slurry is spray-dried and granulated under a nitrogen protective atmosphere. The diameter of the spray granulation nozzle is 0.96mm, the s...

Embodiment 3

[0061] The preparation of embodiment 3Mo10Cu90 alloy

[0062] 1. Molybdenum powder treatment

[0063] The prepared Fisherman's particle size is 3.0μm, and the bulk density is 1.0g / cm 3 The molybdenum powder is crushed by a jet crusher to obtain non-agglomerated molybdenum powder.

[0064] 2. Spray granulation

[0065] Take the Fischer particle size as 3.0μm, and the bulk density as 2.0g / cm 3 The superfine copper powder of step 1 is mixed with the non-agglomerated molybdenum powder of step 1, water and binding agent are mixed into slurry. Among them: the mass ratio of non-agglomerated molybdenum powder: copper powder is 1:9, the amount of water added is 15% of the total mass of non-agglomerated molybdenum powder and copper powder; the amount of binder added is the total mass of non-agglomerated molybdenum powder and copper powder 1%. The slurry is spray-dried and granulated under a nitrogen protective atmosphere. The diameter of the spray granulation nozzle is 0.8mm, the s...

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Abstract

The invention discloses a molybdenum-copper alloy with low molybdenum content and a preparation method thereof. The preparation method of the molybdenum-copper alloy with low molybdenum content comprises: molybdenum powder treatment step: the molybdenum powder is subjected to airflow crushing to obtain non-agglomerated molybdenum powder; spray granulation step: adding water, sticking Then, stir to obtain a uniform slurry, and then prepare the uniform slurry into a spherical molybdenum-copper powder by spray granulation; automatic pressing step: automatically press the spherical molybdenum-copper powder to obtain a green compact; Gluing step: removing the binder in the compact to obtain a blank; sintering step: sintering the blank to obtain a molybdenum-copper alloy. The method has the effects of high efficiency, high compactness, uniform structure, good consistency, and high yield.

Description

technical field [0001] The invention relates to refractory metal powder metallurgy technology, in particular to a molybdenum-copper alloy with low molybdenum content and a preparation method thereof. Background technique [0002] Mo-Cu composite material is a "pseudo-alloy" composed of molybdenum with high strength and low thermal expansion coefficient and copper with high electrical and thermal conductivity. Although Mo / Cu alloys have lower thermal conductivity and density than W / Cu alloys, the melting point and hardness of Mo are lower than those of W, which makes molybdenum-copper composites easier to sinter and process. Therefore, Mo Copper materials are more widely used. [0003] The mixed powder sintering method is the most common method for preparing molybdenum-copper composite materials. The sintering process of molybdenum-copper materials is very similar to that of tungsten-copper materials. Molybdenum powder and copper powder are mixed and pressed in proportion, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/04C22C9/00B22F1/00B22F3/02B22F3/10B22F9/08
CPCC22C1/04C22C1/0425C22C9/00B22F9/08B22F3/02B22F3/1017B22F1/14
Inventor 吕思键钟铭杨义兵刘俊海张健伟王承阳
Owner 安泰天龙钨钼科技有限公司
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