A kind of method of powder metallurgy in-situ synthesis al-cu alloy
A powder metallurgy in-situ, al-cu technology, applied in the direction of coating, can solve problems such as long-term ball milling, and achieve the effect of excellent tensile properties
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Embodiment 1
[0022] Mix 1.26g of copper acetate monohydrate with 9.6g of aluminum powder, add to 120ml of absolute ethanol, evaporate to dryness with magnetic stirring at 65°C, and place in the air for 1 day to obtain the precursor powder. Take 10g of the precursor powder prepared by the above process and place it in the constant temperature zone of the tube furnace, raise the temperature to 300°C under the protection of argon, feed argon at a flow rate of 200ml / min for 1 hour, then turn off the argon, and use 200ml The flow rate of / min was fed with hydrogen for another 1 hour, then the hydrogen was turned off, and the furnace was cooled to room temperature under the protection of argon to obtain Al-Cu powder with a Cu content of 4wt.%. Prepare 3 times in this way. Take 20g of the Al-Cu powder prepared by the above process, add 200g of steel balls, put it into a ball mill tank, vacuumize it, fill it with argon gas, and ball mill it at 400 rpm for 1 hour. The powder obtained by ball milli...
Embodiment 2
[0024] The specific method and steps are the same as in Example 1, except that the ball milling process is omitted. The tensile strength of the obtained material is (260~270) MPa, and the elongation at break is (16.9~17.6)%.
Embodiment 3
[0026] Concrete method and step are with embodiment 1, and difference is: sintering temperature becomes 570 ℃ by 600 ℃. The tensile strength of the prepared material is (262~268) MPa, and the elongation at break is (7.0~8.8)%.
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