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Rare earth nitride dispersion strengthened brass alloy and preparation method thereof

A technology of rare earth nitrides and brass alloys, which is applied in the field of brass alloys, can solve the problems of the strength, electrical and thermal conductivity of contaminated alloy samples, unsuitability for large-scale production of copper alloy products, and the reduction of mechanical properties of alloy materials, etc., to achieve high electrical and thermal conductivity The effects of ductility, easy operation, and simple preparation process

Active Publication Date: 2022-07-01
ZHEJIANG PUJIANG BAICHUAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] When the method of powder metallurgy is used to prepare, due to the reduction of the particle diameter of the reinforcing phase powder, the ball milling method is usually used for mechanical mixing, but the above method cannot make the powder particles uniform, resulting in a decrease in the mechanical properties of the alloy material; in the process of mechanical mixing In the alloy powder, the pollution of oxygen and iron will be introduced into the alloy sample, which has a great impact on the strength of the alloy sample and its electrical and thermal conductivity; the method of preparing copper alloy by powder metallurgy is not suitable for large-scale copper alloy products due to its process limitations production

Method used

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  • Rare earth nitride dispersion strengthened brass alloy and preparation method thereof
  • Rare earth nitride dispersion strengthened brass alloy and preparation method thereof
  • Rare earth nitride dispersion strengthened brass alloy and preparation method thereof

Examples

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Embodiment 1

[0044] This embodiment is a rare earth nitride dispersion strengthened brass alloy, the brass alloy is composed of α single-phase brass and rare earth nitride; the mass fraction ratio of α single phase brass and rare earth nitride in the brass alloy is :19:1.

[0045] Rare earth nitride is composed of cerium nitride powder particles with diameter less than 0.5um, yttrium nitride powder particles and lanthanum nitride powder particles. The mass ratio of powder particles is 1:2:1.

[0046] like figure 1 , figure 2 A method for preparing a rare earth nitride dispersion-strengthened brass alloy as shown, comprises a furnace body 1 with an open upper end, a cover plate 2 arranged on the furnace body, and two plates respectively arranged on the left and right parts of the cover plate for The air inlet pipe 21 ventilating into the furnace body, the stirrer arranged on the cover plate, the exhaust hole 22 and the temperature sensor 23 arranged on the cover plate; the stirrer inclu...

Embodiment 2

[0064] The mass fraction ratio of α single-phase brass and rare earth nitride in the brass alloy in this embodiment is: 18.5:1, and the cerium nitride powder particles, yttrium nitride powder particles and lanthanum nitride in the rare earth nitride are The mass ratio of powder particles is 1:1.9:1; the mechanical stirring temperature is 1200°C, the degassing temperature is 900°C, and the treatment time is 4h; the thermal aging treatment condition is 550°C for 75h; other structures and The method part is the same as in Example 1.

Embodiment 3

[0066] The mass fraction ratio of α single-phase brass and rare earth nitride in the brass alloy in this embodiment is: 19.5:1, and the cerium nitride powder particles, yttrium nitride powder particles and lanthanum nitride in the rare earth nitride are The mass ratio of powder particles is 1:2.1:1; the mechanical stirring temperature is 1210°C; the degassing temperature is 700°C, and the treatment time is 6h; the thermal aging treatment condition is 70h at 565°C; other structures and The method part is the same as in Example 1.

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Abstract

The invention discloses a rare earth nitride dispersion strengthened brass alloy and a preparation method thereof. The brass alloy is composed of alpha single-phase brass and rare earth nitride. The mass part ratio of the alpha single-phase brass to the rare earth nitride in the brass alloy is (18.5-19.5): 1. The rare earth nitride is formed by mixing cerium nitride powder particles, yttrium nitride powder particles and lanthanum nitride powder particles with the diameter smaller than 0.5 micrometer, and the mass ratio of the cerium nitride powder particles to the yttrium nitride powder particles to the lanthanum nitride powder particles in the rare earth nitride is 1: (1.9-2.1): 1. The brass alloy prepared by the invention has the characteristics of high hardness, high wear resistance and high electric conductivity and heat conductivity.

Description

technical field [0001] The invention belongs to the technical field of brass alloys, in particular to a rare earth nitride dispersion-strengthened brass alloy with high hardness, high wear resistance, high electrical and thermal conductivity, and certain ductility and a preparation method thereof. Background technique [0002] Copper alloys are mainly prepared by vacuum melting and powder metallurgy processes. [0003] When vacuum smelting is used, due to the large difference in the density of alloy elements and copper, the added alloy powder particles cannot be uniformly distributed in the matrix copper melt during the smelting process, and it is easy to form component segregation, which affects the fatigue resistance of alloy products; [0004] When using vacuum consumable electric arc furnace smelting technology, a large tonnage hydraulic press must be used to prepare consumable electrodes before smelting, the process is cumbersome and the utilization rate of alloy partic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/04B22D17/00C22C1/10C22F1/08C22C32/00
CPCC22C9/04B22D17/00C22F1/08C22C1/1036C22C32/0068C22C1/1073
Inventor 潘秋丽张荣良朱晓军杨兴跃沈子祥江南
Owner ZHEJIANG PUJIANG BAICHUAN IND