Copper-base alloy/iron-base martensite alloy composite powder and method of preparing the same
A copper-based alloy and composite powder technology, which is applied in chemical instruments and methods, metal layered products, layered products, etc., can solve the problems of raw material loss, impossibility of obtaining iron-based martensitic phase, complex preparation process, etc. , to achieve a good effect of interface integration
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[0018] Example 1: Place 456g of pure copper (electrolytic copper, purity of 99.99wt.%), 514g of pure iron (purity of 99.9wt.%), and 30g of pure silicon (purity of 99.9wt.%) in an alumina crucible , Then put the alumina crucible into the vacuum induction furnace built in the atomization equipment (power supply voltage: 110V / 220V AC; power supply frequency: 50-60Hz; working frequency: 150-250KHz), close the furnace door and vacuum to Vacuum degree in vacuum induction furnace to 1×10 -3 Pa, increase the current until the above three pure metals are completely melted into liquid, and the alloy liquid composition obtained is Cu-51.4Fe-3Si (wt.%). Pour the molten alloy liquid (about 1kg) into the receiving hopper, blow it with nitrogen at the moment the liquid flows into the atomization chamber, and obtain the copper-based alloy / iron-based martensite composite powder at the bottom of the atomization chamber body. Close the nitrogen gas flow valve and reduce the current value to zero at ...
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[0019] Example 2: Put 656g of pure copper (electrolytic copper, purity of 99.99wt.%), 314g of pure iron (purity of 99.9wt.%), and 30g of pure silicon (purity of 99.9wt.%) in an alumina crucible , Then put the alumina crucible into the vacuum induction furnace built in the atomization equipment (power supply voltage: 110V / 220V AC; power supply frequency: 50-60Hz; working frequency: 150-250KHZ), close the furnace door and vacuum to Vacuum degree in vacuum induction furnace to 1×10 -3 Pa, increase the current until the above three pure metals are completely melted into liquid, and the alloy liquid composition obtained is Cu-31.4Fe-3Si (wt.%). Pour the molten alloy liquid (about 1kg) into the receiving hopper, blow it with argon at the moment the liquid flows into the atomization chamber, and the iron-based martensite alloy / copper-based alloy can be obtained at the lowest end of the atomization chamber Composite powder. Close the argon gas flow valve and reduce the current value to ze...
Example Embodiment
[0020] Example 3: 653g of pure copper (electrolytic copper, purity of 99.99wt.%), 314g of pure iron (purity of 99.9wt.%), 30g of pure silicon (Si, purity of 99.9wt.%), 3g of coke were placed in In the alumina crucible, follow the steps described in Example 2 to obtain an iron-based martensite alloy / copper-based alloy composite powder. Take 50g of the composite powder and encapsulate it in the resin, after being treated with sandpaper #80, #150, #400, #800, #1500, #2000, and then polished by polishing paste (diamond particles, about 10μm in diameter) , Count the points under the HV-1000 Vickers hardness tester (power supply: AC220V 50Hz; diamond square pyramid indenter; test force: 0.245N (25gf)). The relationship between the obtained hardness and the distance from the point to the interface is as Figure 6 Shown. On the copper-rich phase (copper-based alloy), the average hardness value is close to 200HV; on the iron-based martensitic alloy phase, the hardness value is between 500 an...
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