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High-strength and high-conductivity copper and zirconium alloy and preparation method thereof

A technology of copper-zirconium alloy and high-conductivity copper, which is applied in the field of high-strength and high-conductivity copper-zirconium alloy and its preparation, can solve the problems of low strength and hardness, low electrical conductivity and elongation, and low tensile strength, so as to improve elongation, Improved electrical conductivity and excellent thermal processing properties

Inactive Publication Date: 2015-11-25
HENAN UNIV OF SCI & TECH
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a high-strength and high-conductivity copper-zirconium alloy and its preparation method to solve the problems of low tensile strength, low electrical conductivity and elongation, and low strength and hardness of traditional copper-zirconium alloys, so as to meet the needs of lead frames. Copper Alloy Requirements

Method used

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  • High-strength and high-conductivity copper and zirconium alloy and preparation method thereof

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preparation example Construction

[0020] A method for preparing a high-strength and high-conductivity copper-zirconium alloy, comprising the following steps:

[0021] Step 1. Preparation of master alloy: put copper and zirconium in a vacuum non-consumable electrode arc melting furnace for melting, and vacuumize until the pressure in the furnace is 5×10 -2 Pa, then filled with argon until the pressure in the furnace is 0.05MPa, heated to 1050~1100°C, smelted for 0.5~1h, and cooled naturally to obtain a Cu-Zr master alloy for later use; put copper and silicon into a vacuum for non-self-consumption Smelting in an arc melting furnace, vacuuming until the pressure in the furnace is 5×10 -2 Pa, then filled with argon until the pressure in the furnace is 0.05MPa, heated to 1010~1040℃, smelted for 0.5~1h, and naturally cooled to obtain a Cu-Si master alloy for later use;

[0022] Step 2, smelting, mold casting: put copper, nickel, silver and the Cu-Zr master alloy and Cu-Si master alloy prepared in step 1 into a high...

Embodiment 1

[0032] A high-strength and high-conductivity copper-zirconium alloy is composed of the following components in weight percentage, 0.1% zirconium, 0.1% nickel, 0.1% silicon, 0.2% silver, and the balance is copper and unavoidable impurity elements.

[0033] The specific preparation method is:

[0034] Step 1. Preparation of master alloy: put copper and zirconium in a vacuum non-consumable electrode arc melting furnace for melting, and vacuumize until the pressure in the furnace is 5×10 -2 Pa, then fill the furnace with argon until the pressure in the furnace is 0.05MPa, heat to 1050°C, smelt for 1h, and get Cu-Zr master alloy after natural cooling, for later use; put copper and silicon into the vacuum non-consumable electrode arc melting furnace Smelting in the furnace, vacuuming until the pressure in the furnace is 5×10 -2 Pa, and then filled with argon until the pressure in the furnace is 0.05MPa, heated to 1020°C, smelted for 1h, and cooled naturally to obtain a Cu-Si master...

Embodiment 2

[0042] A high-strength and high-conductivity copper-zirconium alloy is composed of the following components by weight percentage: 0.15% zirconium, 0.15% nickel, 0.1% silicon, 0.1% silver, and the balance is copper and unavoidable impurity elements.

[0043] The specific preparation method is:

[0044] Step 1. Preparation of master alloy: put copper and zirconium in a vacuum non-consumable electrode arc melting furnace for melting, and vacuumize until the pressure in the furnace is 5×10 -2 Pa, then filled with argon until the pressure in the furnace is 0.05MPa, heated to 1080°C, smelted for 1h, and cooled naturally to obtain a Cu-Zr intermediate alloy for later use; put copper and silicon into a vacuum non-consumable electrode arc melting furnace Smelting in the furnace, vacuuming until the pressure in the furnace is 5×10 -2 Pa, and then filled with argon until the pressure in the furnace is 0.05MPa, heated to 1020°C, smelted for 1h, and cooled naturally to obtain a Cu-Si mast...

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Abstract

High-strength and high-conductivity copper and zirconium alloy is composed of zirconium, nickel, silicon and copper and comprises, by weight, 0.1-0.5% of zirconium, 0.1-0.5% of nickel, 0.1-0.15% of silicon, 0.2-0.4% of silver, the balance copper and inevitable impurity elements. The high-strength and high-conductivity copper and zirconium alloy has the beneficial effects that the reparation process is simple, the technological process is short, the strength, the conductivity and elasticity are high, the hot-working character is good, and the tensile strength of the high-strength and high-conductivity copper and zirconium alloy can reach 688 MPa.

Description

technical field [0001] The invention belongs to the technical field of copper alloy materials, in particular to a high-strength and high-conductivity copper-zirconium alloy and a preparation method thereof. Background technique [0002] Cu-Zr alloys are a class of alloys with high strength and high conductivity that are widely used. They are currently widely used in lead frames for large-scale integrated circuits, contact wires for trams and electric locomotives, and electrical contact alloys. As the main material of large-scale integrated circuits, lead frame copper alloy has higher and higher performance requirements. However, there are many traditional alloys with low tensile strength, low conductivity and elongation, or low strength and hardness. The problem, therefore, is that it is urgent to develop a new copper alloy with high strength and high lead frame material. Contents of the invention [0003] The technical problem to be solved by the present invention is to ...

Claims

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Application Information

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IPC IPC(8): C22C9/00C22C1/03
Inventor 张毅孙慧丽柴哲田保红刘勇刘平许倩倩龙永强陈小红
Owner HENAN UNIV OF SCI & TECH
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