Gold alloy composite bond wire having gold coating layer and manufacturing method thereof
A technology of a gold coating layer and a manufacturing method, which is applied in the field of gold alloy composite bonding wire and its manufacturing, can solve the problems such as hindering the application and development of gold bonding wire, low tensile strength of gold bonding wire, unfavorable for enterprises to improve competitiveness, etc. The effect of improving the anti-oxidation and anti-sulfur properties, improving the anti-oxidation and anti-sulfur properties, and improving the workability of the welding wire
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Embodiment 1
[0034] The gold alloy composite bonding wire with a gold cladding layer of the present embodiment comprises a core wire and a gold cladding layer coated on the outside of the core wire; the core wire contains Ag 35%, Pd 3%, In 1%, by weight, Ca 50 ppm, Be 50 ppm, and the balance is gold; the thickness of the gold coating layer is 40nm.
[0035] In this embodiment, the manufacturing method of the gold alloy composite bonding wire having a gold coating layer comprises the following steps:
[0036] (1) Melting and casting: Ag, Pd, In, Ca and Be are added to the gold raw material in proportion, and after vacuum melting and directional continuous casting process, a core wire with a diameter of 8 mm is obtained;
[0037] (2) Wire drawing: drawing the core wire obtained in step (1) to obtain a bonding wire core wire with a diameter of 100um;
[0038] In this step (2), during the wire drawing process, the wire is subjected to intermediate annealing several times, and N 2 As the anne...
Embodiment 2
[0052] The gold alloy composite bonding wire with a gold cladding layer of the present embodiment comprises a core wire and a gold cladding layer coated on the outside of the core wire; the core wire contains 25% by weight of Ag, 5% of Pd, 0.6% of In, Ca 20 ppm, the balance is gold; the thickness of the gold coating layer is 60nm.
[0053] In this embodiment, the manufacturing method of the gold alloy composite bonding wire having a gold coating layer comprises the following steps:
[0054] (1) Melting and casting: Ag, Pd, In and Ca are added to the gold raw material in proportion, and after vacuum melting and directional continuous casting process, a core wire with a diameter of 6 mm is obtained;
[0055] (2) Wire drawing: drawing the core wire obtained in step (1) to obtain a bonding wire core wire with a diameter of 80um;
[0056] In this step (2), during the wire drawing process, the wire is subjected to intermediate annealing several times, and N 2 As the annealing atmo...
Embodiment 3
[0070] The gold alloy composite bonding wire with a gold cladding layer of the present embodiment includes a core wire and a gold cladding layer coated on the outside of the core wire; the core wire contains 49% by weight of Ag, 1% of Pd, and In 2 %, Ca 100 ppm, Be 10 ppm, and the balance is gold; the thickness of the gold cladding layer is 80nm.
[0071] In this embodiment, the manufacturing method of the gold alloy composite bonding wire having a gold coating layer comprises the following steps:
[0072] (1) Melting and casting: Ag, Pd, In, Ca and Be are added to the gold raw material in proportion, and after vacuum melting and directional continuous casting process, a core wire with a diameter of 8 mm is obtained;
[0073] (2) Wire drawing: drawing the core wire obtained in step (1) to obtain a bonding wire core wire with a diameter of 250um;
[0074] In this step (2), during the wire drawing process, the wire is subjected to intermediate annealing several times, and N 2 ...
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