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A kind of superfine aluminum alloy conductor and preparation method thereof

An aluminum alloy conductor and aluminum alloy wire technology, which is applied in the field of metal materials, can solve problems such as ultrafine aluminum alloy conductor products and records of preparation methods for ultrafine aluminum alloy conductors, etc., so as to reduce thermal crack sensitivity and increase bond combined reliability, excellent electrical conductivity and mechanical properties

Active Publication Date: 2018-04-03
吴振江
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Before the completion of the present invention, there was no superfine aluminum alloy conductor product identical to the preparation method of the present invention, nor was there any preparation method of the superfine aluminum alloy conductor identical to the present invention recorded in the literature

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The preparation process of the ultrafine aluminum alloy conductor is as follows:

[0045] Step 1: Preparation of aluminum intermediate particles

[0046] Melting the aluminum master alloy ingot, continuous casting to obtain the aluminum master alloy rod, and then cutting to make cylindrical particles with a diameter of 8mm-12mm and a length of 30mm, and the weight of the particles is 6g-14g;

[0047] Step 2: Ingredients

[0048] By weight percentage: 0.13% iron Fe, 0.2% silicon Si, 0.16% copper Cu, 0.001% scandium Sc, 0.001% cerium Ce, 0.05% magnesium Mg, 0.001% boron B, and the balance is aluminum Al for batching and preparation Aluminum ingots and aluminum master alloy particles;

[0049] Step 3: Rapid melting of aluminum ingots

[0050] Using a rapid melting aluminum master furnace, using 1200°C high-temperature furnace gas and forehearth aluminum melt to immerse the aluminum ingot to achieve rapid melting and obtain a 750°C aluminum melt;

[0051] Step 4: Insula...

Embodiment 2

[0073] The preparation process of the ultrafine aluminum alloy conductor is as follows:

[0074] Step 1: Preparation of aluminum intermediate particles

[0075] Melting the aluminum master alloy ingot, continuous casting to obtain the aluminum master alloy rod, and then cutting to make cylindrical particles with a diameter of 8mm-12mm and a length of 30mm, and the weight of the particles is 6g-14g;

[0076] Step 2: Ingredients

[0077] Percentage by weight: 0.32% iron Fe, 0.3% silicon Si, 0.32% copper Cu, 0.1% scandium Sc, 0.008% cerium Ce, 0.1% magnesium Mg, 0.005% boron B, and the balance is aluminum Al for batching and preparation Aluminum ingots and aluminum master alloy particles;

[0078] Step 3: Rapid melting of aluminum ingots

[0079] Using a rapid melting aluminum master furnace, using 1200°C high-temperature furnace gas and forehearth aluminum melt to immerse the aluminum ingot to achieve rapid melting and obtain a 750°C aluminum melt;

[0080] Step 4: Insulatio...

Embodiment 3

[0102] The preparation process of the ultrafine aluminum alloy conductor is as follows:

[0103] Step 1: Preparation of aluminum intermediate particles

[0104]Melting the aluminum master alloy ingot, continuous casting to obtain the aluminum master alloy rod, and then cutting to make cylindrical particles with a diameter of 8mm-12mm and a length of 30mm, and the weight of the particles is 6g-14g;

[0105] Step 2: Ingredients

[0106] By weight percentage: 0.25% iron Fe, 0.10% silicon Si, 0.22% copper Cu, 0.002% scandium Sc, 0.002% cerium Ce, 0.02% magnesium Mg, 0.001% boron B, and the balance is aluminum Al for batching and preparation Aluminum ingots and aluminum master alloy particles;

[0107] Step 3: Rapid melting of aluminum ingots

[0108] Using a rapid melting aluminum master furnace, using 1200°C high-temperature furnace gas and forehearth aluminum melt to immerse the aluminum ingot to achieve rapid melting and obtain a 750°C aluminum melt;

[0109] Step 4: Insula...

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Abstract

The invention relates to a superfine aluminum alloy conductor and a preparation method thereof. Compared with the prior art, the preparation method includes the steps: alloying by the aid of a plurality of elements; preparing and adding intermediate alloy particles; comprehensively adopting the technologies such as rapid aluminum melting at high temperature and electromagnetic stirring; controlling temperature in a partitioned manner, and performing directional solidification; continuously casting and rolling materials; drawing the materials in a multi-pass manner; performing heat treatment to prepare the aluminum alloy conductor which is excellent in corrosion resistance and high in creep resistance and has excellent strength and conductivity in the length direction. Bonding reliability is improved, and packaging cost is remarkably reduced.

Description

technical field [0001] The invention belongs to the field of metal materials, and relates to an aluminum alloy conductor and a preparation method thereof, in particular to an ultrafine aluminum alloy conductor and a preparation method thereof. Background technique [0002] Bonding wire is often used to connect chips of microelectronic devices such as radio frequency power transistors. It is a necessary basic material for semiconductor discrete devices and integrated circuit packaging. Packaging of integrated circuits. [0003] As the lead wire between the chip and the frame, in order to achieve a stable and reliable connection, the bonding wire must have the following main characteristics: the bonding wire should have a large conductivity per unit volume, the resistance of the welding point should be as small as possible, and the welding point should be on the chip. The space occupied by the chip and the gap required for welding should also be as small as possible; the bond...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C21/02C22C21/16C22C1/03B21C37/04
CPCB21C37/047C22C1/026C22C1/03C22C21/00C22C21/02C22C21/16
Inventor 吴振江於国良黄晓东黄新民
Owner 吴振江
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