Zn (zinc) based high-temperature lead-free soft solder and preparation method for same
A soldering material and high-temperature technology, which is applied in the field of Zn-based high-temperature lead-free soldering material and its preparation, can solve the problems of fast dissolution of pads, weak bonding strength, poor oxidation resistance of alloys, etc., and achieve good wettability and spreadability, The effect of improving mechanical strength and improving mechanical properties
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Embodiment 1
[0010] The Zn-based high-temperature lead-free solder provided by this embodiment is composed of the following components in weight percentage: 2% aluminum, 1% tin, 6% copper, 1% titanium, 1.0% manganese, 0.1% lanthanum cerium rare earth, the balance of zinc.
[0011] The preparation method of the Zn-based high-temperature lead-free solder provided in this example is: weigh 44.45g zinc, 1g aluminum, 0.5g tin, 3g copper, 0.5g manganese, 0.5g titanium and 0.05g lanthanum cerium rare earth with an electronic balance , in order to reduce the burning loss of lanthanum cerium rare earth, the manganese, lanthanum cerium rare earth, titanium and copper are mixed first, and the master alloy is made by vacuum melting method, and the master alloy is mixed with aluminum, tin and zinc, and put together Melting in an industrial vacuum induction furnace, the vacuum degree of the vacuum induction furnace is 5×10 -2 Pa, the current is 480A, the voltage is 20V, and the melting time is 40 minut...
Embodiment 2
[0013] The Zn-based high-temperature lead-free solder provided in this embodiment is composed of the following components in weight percentage: 4% aluminum, 20% tin, 8% copper, 0.5% titanium, 0.3% lanthanum cerium rare earth, The balance of zinc.
[0014] The preparation method of the Zn-based high-temperature lead-free solder provided in this embodiment is: weigh 33.6g zinc, 2g aluminum, 10g tin, 4g copper, 0.25g titanium and 0.15g lanthanum cerium rare earth with an electronic balance, in order to reduce the amount of lanthanum cerium Rare earth burning loss, first mix the lanthanum cerium rare earth, titanium and copper, and use vacuum melting method to make master alloy, then mix the master alloy with aluminum, tin and zinc, and put them into industrial vacuum induction furnace together Melting, the vacuum degree of the vacuum induction furnace is 1×10 -2 Pa, the current is 480A, the voltage is 20V, and the melting time is 90 minutes. During the melting process, the molte...
Embodiment 3
[0016] The Zn-based high-temperature lead-free solder provided by this embodiment is composed of the following components in weight percentage: 15% aluminum, 5% tin, 6% copper, 0.01% titanium, 0.5% manganese, and the balance of zinc.
[0017] The preparation method of the Zn-based high-temperature lead-free solder provided in this embodiment is: weigh 36.745g zinc, 7.5g aluminum, 2.5g tin, 3g copper, 0.25g manganese, 0.005g titanium with an electronic balance, and weigh the Zinc, aluminum, tin, copper, manganese and titanium are melted together in an industrial vacuum induction furnace with a vacuum degree of 5×10 -3 Pa, the current is 480A, the voltage is 20V, and the melting time is 90 minutes. During the melting process, the molten alloy is stirred by the moving electrode every 10 minutes. After the melting is completed, it is cooled and taken out to produce Zn-based high-temperature lead-free solder.
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