Bonding copper wire and preparation method thereof
A copper wire and bonding technology, applied in the field of bonding copper wire and its preparation, can solve problems such as stress concentration, uneven dispersion, complex process, etc., to improve surface oxidation resistance, improve oxidation resistance, and improve comprehensive performance Effect
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Embodiment approach 1
[0039] according to figure 1 With the components and contents shown, a copper bonding wire with a diameter of 20 μm was prepared.
[0040] For the preparation method of bonding copper wire, see Figure 7 , the specific process is as follows:
[0041] 1. Preparation of master alloy: Take the preparation of Cu-Al alloy as an example to illustrate the preparation of master alloy.
[0042] According to the proportion relationship that the elemental Al accounts for 1%-3% of the total mass of the Cu-Al master alloy, and the balance is 6N copper, the elemental Al and 6N copper are weighed. Put the weighed elemental Al into the feeding bin of the vacuum furnace, and then put 6N copper into the melting crucible of the vacuum furnace. Vacuum to 10 -3 After Pa, backfill argon to the slight positive pressure in the vacuum furnace, and start to melt 6N copper. After the 6N copper is melted and cleared, the elemental Al is added to the copper melt through the feeding mechanism, and the ...
Embodiment approach 2
[0052] according to figure 2 With the components and contents shown, a copper bonding wire with a diameter of 20 μm was prepared.
[0053] For the preparation method of bonding copper wire, see Figure 7 , the specific process is as follows:
[0054] 1. Preparation of master alloy: Take the preparation of Cu-Al alloy as an example to illustrate the preparation of master alloy.
[0055] According to the proportion relationship that the elemental Al accounts for 1%-3% of the total mass of the Cu-Al master alloy, and the balance is 6N copper, the elemental Al and 6N copper are weighed. Put the weighed elemental Al into the feeding bin of the vacuum furnace, and then put 6N copper into the melting crucible of the vacuum furnace. Vacuum to 10 -3 After Pa, backfill argon to the slight positive pressure in the vacuum furnace, and start to melt 6N copper. After the 6N copper is melted and cleared, the elemental Al is added to the copper melt through the feeding mechanism, and the...
Embodiment approach 3
[0065] according to image 3 With the components and contents shown, a copper bonding wire with a diameter of 20 μm was prepared.
[0066] For the preparation method of bonding copper wire, see Figure 7 , the specific process is as follows:
[0067] 1. Preparation of master alloy: Take the preparation of Cu-Al alloy as an example to illustrate the preparation of master alloy.
[0068] According to the proportion relationship that the elemental Al accounts for 1%-3% of the total mass of the Cu-Al master alloy, and the balance is 6N copper, the elemental Al and 6N copper are weighed. Put the weighed elemental Al into the feeding bin of the vacuum furnace, and then put 6N copper into the melting crucible of the vacuum furnace. Vacuum to 10 -3 After Pa, backfill argon to the slight positive pressure in the vacuum furnace, and start to melt 6N copper. After the 6N copper is melted and cleared, the elemental Al is added to the copper melt through the feeding mechanism, and the ...
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