Unlock instant, AI-driven research and patent intelligence for your innovation.

Large-diameter bonded aluminum wire and manufacturing method thereof

A manufacturing method and technology for bonding aluminum, applied in the direction of metal/alloy conductors, rods/rods/wires/strip conductors, etc., which can solve the problem of inability to meet the increasingly high performance requirements of customers' products, poor corrosion resistance, and short service life and other problems, to achieve the effect of being conducive to lasting preservation, strong corrosion resistance and long service life

Active Publication Date: 2015-03-11
NICHE TECH KAISER SHANTOU
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the large-diameter bonding aluminum wires are pure aluminum wires, which are mainly made of aluminum with a purity of 99.99% or 99.999%. Although the large-diameter bonding aluminum wires made of these two aluminum materials have good welding performance, However, its corrosion resistance is relatively poor, so that the bonded products have the problems of fast aging and short service life.
As the key material of integrated circuits, the existing large-diameter bonded aluminum wire made of pure aluminum can no longer meet the increasing requirements of customers for product performance.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] In this embodiment, the manufacturing method of the large-diameter aluminum bonding wire includes the following steps in sequence:

[0020] (1) Prepare raw materials according to the following weight ratio: high-purity aluminum 99.995%, nickel 0.005%; the purity of the high-purity aluminum is 99.999%;

[0021] In the above-mentioned high-purity aluminum, the total amount of impurities is 0.001% by weight, and the content of magnesium in the impurities is 1 ppm, the content of copper is 1 ppm, and the content of iron is 1 ppm;

[0022] (2) Put the high-purity aluminum equipped in step (1) in a vacuum of 10 -2 Melt in a furnace of Mpa; then keep the temperature of the high-purity aluminum melt at 710°C, add the nickel equipped in step (1), and keep it warm for 40 minutes; then use the solidification method to manufacture a large-diameter bond with a diameter of 5 mm Aluminum wire blank;

[0023] (3) Drawing the large-diameter bonded aluminum wire blank prepared in step ...

Embodiment 2

[0028] In this embodiment, the manufacturing method of the large-diameter aluminum bonding wire includes the following steps in sequence:

[0029] (1) Prepare raw materials according to the following weight ratio: high-purity aluminum 99.95%, nickel 0.05%; the purity of the high-purity aluminum is 99.995%;

[0030] In the above-mentioned high-purity aluminum, the total amount of impurities is 0.005% by weight, and the content of magnesium in the impurities is 2 ppm, the content of copper is 2 ppm, and the content of iron is 2 ppm, and the content of a single impurity element in other impurities is not more than 10 ppm;

[0031] (2) Put the high-purity aluminum equipped in step (1) in a vacuum of 5×10 -3 Melt in a furnace of Mpa; then keep the temperature of the high-purity aluminum melt at 700°C, add the nickel equipped in step (1), and keep it warm for 30 minutes; then use solidification to manufacture a large-diameter bond with a diameter of 6 mm Aluminum wire blank;

[0...

Embodiment 3

[0037] In this embodiment, the manufacturing method of the large-diameter aluminum bonding wire includes the following steps in sequence:

[0038] (1) Prepare raw materials according to the following weight ratio: 99.9% high-purity aluminum, 0.1% nickel; the purity of the high-purity aluminum is 99.995%;

[0039] In the above-mentioned high-purity aluminum, the total amount of impurities is 0.005% by weight, and the content of magnesium in the impurities is 3 ppm, the content of copper is 3 ppm, and the content of iron is 3 ppm, and the content of a single impurity element in other impurities is not more than 10 ppm;

[0040](2) Put the high-purity aluminum equipped in step (1) in a vacuum of 10 -3 Melt in a furnace of Mpa; then keep the temperature of the high-purity aluminum melt at 665°C, add the nickel equipped in step (1), and keep it warm for 60 minutes; then use the solidification method to manufacture a large-diameter bond with a diameter of 8 mm Aluminum wire blank;...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a large-diameter bonded aluminum wire which is made of aluminum-nickel alloy, the aluminum-nickel alloy comprises 99-99.995wt% of high-purity aluminum and 0.005-1wt% of nickel, and the purity of the high-purity aluminum is more than or equal to 99.995%. The invention further provides a manufacturing method of the large-diameter bonded aluminum wire. The large-diameter bonded aluminum wire has the advantages of being better under acid and base environments, well adapting to the acid and base environments, effectively preventing the bonded aluminum wire from being subjected to acid and base corrosion, being strong in corrosion resistance capability, beneficial to the durable storage of the bonded aluminum wire, delaying the aging, and prolonging the service life of the packaged integrated circuit product; the large-diameter bonded aluminum wire has excellent mechanical performance, electrical property, thermal property and the like, the chip frequency and reliability can be improved to a greater extent, and the bonding is firmer and more stable.

Description

technical field [0001] The invention relates to materials for bonding integrated circuits, in particular to a large-diameter bonding aluminum wire for bonding integrated circuits and a manufacturing method for the large-diameter bonding aluminum wire. Background technique [0002] Large-diameter bonding aluminum wires are widely used in the bonding wires of integrated circuits such as MOS transistors, thyristors, Schottky modules, high-power diodes, high-power triodes, and automotive electronic devices. At present, most of the large-diameter bonded aluminum wires are pure aluminum wires, which are mainly made of aluminum with a purity of 99.99% or 99.999%. Although the large-diameter bonded aluminum wires made of these two aluminum materials have good welding performance, However, its corrosion resistance is relatively poor, so that the bonded products have the problems of rapid aging and short service life. As the key material of integrated circuits, the existing large-dia...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C1/02C22F1/04H01B1/02H01B5/02
Inventor 周振基周博轩
Owner NICHE TECH KAISER SHANTOU