Copper-zirconium alloy for electronic component and preparation method of copper-zirconium alloy

Abstract

The invention discloses a copper-zirconium alloy for an electronic component and a preparation method of the copper-zirconium alloy. The copper-zirconium alloy comprises the following alloy componentsincluding, by weight, 0.05%-0.4% of Zr, 0.05%-0.2% of Mg, 0.03%-0.15% of Si, 0.01%-0.06% of rare earth and the balance Cu and inevitable impurity elements. The invention further discloses the preparation method of the alloy. The preparation method comprises the steps of melting, alloying, casting, hot rolling, rough rolling, aging, finish rolling, stress relief annealing and finished product treatment. The copper-zirconium alloy has high strength, high conductivity and excellent bending processability under the influence of the comprehensive action of the added Mg, Si and rare earth elements,the preparation method of the alloy easily achieves engineering production and is low in cost, the tensile strength of a finished strip is not less than 560 MPa, the conductivity is not less than 80%IACS, and the product can be used for a tremendous-scale integrated circuit, a large-current electronic element and a heat dissipation component.

Description

technical field

[0001] The invention relates to the technical field of nonferrous metal processing, in particular to a copper-zirconium alloy for electronic components and a preparation method thereof. Background technique

[0002] Copper-zirconium alloy has a conductivity as high as 90-95% IACS and has high heat resistance. It is often used as a copper alloy for electronic components such as high-power lead frames and electronic connectors. With the rapid development of high-tech fields such as microelectronics, communications, transportation, aerospace, and aviation, electronic components are also developing in the direction of high integration, miniaturization, and thin-walled, and the transmission volume and heat generation of electronic components are increasing. This puts forward higher requirements for copper alloy materials. In addition to having high electrical and thermal conductivity and heat resistance, it also needs to have high strength. An alloy material with ...

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