Graphene-enhanced Al-based composite solder auxiliary soldering method
A technology of composite solder and graphene, which is applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problems of poor reinforcement effect and poor dispersion of graphene, and achieve low density and thermal expansion coefficient, high quality The effect of connecting and improving overall performance
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specific Embodiment approach 1
[0018] Specific embodiment one: a kind of graphene-reinforced method for Al-based composite solder assisted brazing described in this embodiment is specifically carried out according to the following steps:
[0019] 1. Add graphene oxide into deionized water and ultrasonically treat it for 2h to 3h to prepare graphene oxide suspension;
[0020] 2. Under the condition that the rotating speed is 300rpm-350rpm, grind the aluminum-based solder in a stainless steel stirring tank for 4h-5h, add the ground aluminum-based solder to absolute ethanol to obtain a suspension of aluminum-based solder, and The aluminum-based solder suspension and the graphene oxide suspension are mixed, and the temperature is 0°C, and the cold mass is ultrasonicated for 2h to 3h to obtain the mixed powder. Dry for 2h to 3h to obtain dried powder;
[0021] The mass percent of graphene oxide in the dried powder is 0.5% to 6%;
[0022] 3. Put the dried powder in the plasma-enhanced chemical vapor deposition ...
specific Embodiment approach 2
[0029] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the aluminum-based solder described in step 2 is aluminum-silicon solder, aluminum-silicon-copper solder, aluminum-silicon-magnesium solder or aluminum-silicon-zinc solder . Others are the same as in the first embodiment.
specific Embodiment approach 3
[0030] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the metal to be welded in step four is 6063 aluminum alloy or SiC p / 101Al. Others are the same as in the first or second embodiment.
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