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High-strength, High-conductivity copper-base alloy material and preparing method thereof

A copper-based alloy, high-conductivity technology, applied in the field of copper-based alloy materials and their preparation, can solve the problems of material conductivity, high temperature strength, high temperature hardness, softening temperature and other properties without obvious improvement, and achieve improved physical and mechanical properties, The effect of improving the structure of the alloy and refining the grains

Inactive Publication Date: 2004-04-14
KUNMING INST OF PRECIOUS METALS
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AI Technical Summary

Problems solved by technology

Although these methods have improved the performance and scope of use of copper-based alloy materials, they have hardly improved the properties of the material such as electrical conductivity, high-temperature strength, high-temperature hardness, and softening temperature.

Method used

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Embodiment Construction

[0019] According to the formula ratio of the alloy material of the present invention in Table 1, the raw materials used for the alloy are weighed, and the copper-based alloy material is prepared according to the following sequential process steps:

[0020] (1) Prepare Cu, Cr, Zr, Y (La, Sm) with a purity of more than 99.95% in proportion, and melt and alloy them in a vacuum intermediate frequency melting furnace;

[0021] (2) Utilize the rapid cooling powder making device (patent number: 91209848.1) to atomize the alloy liquid obtained in step (1) into powder, and the atomization cooling rate is 10 5 -10 6 K / S, the speed of the centrifugal turntable is 7000r / min, and the atomized cooling medium is water;

[0022] (3) Compress the alloy powder obtained in step 2) under a pressure of 150MPa--300MPa;

[0023] (4) Sintering the compact obtained in step 3) within a temperature range of 800°C-900°C;

[0024] (5) Extrude and cold process the semi-finished product in step 4 to obta...

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Abstract

The present invention relates to a high-strength high-conductivity copper base alloy material and its preparation method. Its composition comprises (wt%) 0.01-2.5% of Cr, 0.01-2.0 % of Zr, 0.01-2.0% of one or Y, La and Sm and the rest is Cu, and its preparation method includes the following steps: vacuum smelting the above-mentioned components to obtain the liquid alloy of the above-mentioned components, atomizing and quickly solidifying, making powder, pressing to make blank, sintering and extruding. Said alloy material has good electric conductivity, good heat conductivity, high high-temp. strength, high softening temp. and high conductivity.

Description

technical field [0001] The invention relates to a copper-based alloy material and a preparation method thereof, in particular to a high-strength and high-conductivity copper-based alloy material. Background technique [0002] High-strength and high-conductivity copper alloy refers to an alloy that has excellent electrical and thermal conductivity while taking into account high strength and excellent high-temperature performance. The main requirement is to make the strength of the alloy without losing electrical conductivity and thermal conductivity. improve. Copper-based alloy materials are mainly used as resistance welding electrodes, lead frames, conductive bridges and other materials in industries such as automobiles, motorcycles, electricians, electronics, and electric power. They can also be used to replace toxic beryllium bronze and phosphor bronze to make relay supports and High and low voltage plug-in components, etc. At present, such alloys at home and abroad are ...

Claims

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Application Information

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IPC IPC(8): C22C9/00
Inventor 谢明陈力陈江李汝民杨有才段云喜李方中
Owner KUNMING INST OF PRECIOUS METALS
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