Method for preparing intermetallic compound powder cored filament material for electric arc spraying
An intermetallic compound and powder core wire technology, which is applied in metal material coating process, coating, melt spraying and other directions, can solve the problems of insufficient reaction, low content of intermetallic compound phase, etc., and achieve the adjustment of process parameters. Flexibility, excellent corrosion and wear resistance, and the effect of excellent corrosion and wear resistance
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Embodiment 1
[0008] Embodiment 1, taking the preparation method of Fe-Al intermetallic compound powder core wire material as an example to further describe the technical solution of the present invention:
[0009] (1) 4 kg of aluminum powder with a fineness of 230 orders and a purity of 99.5% and 8.4 kg of iron powder with a fineness of 325 orders and a purity of 99.5% are uniformly mixed;
[0010] (2) Inject the mixed powder into a steel mold of Φ20cm in a hydraulic press, apply a pressure of 20Mpa and press it into a compact with a diameter of 20cm;
[0011] (3) Coat the surface of the block with carbon powder and place it in a vacuumized combustion chamber, preheat it with a tungsten wire for 2 minutes, and suddenly increase the current to ignite it to cause a self-propagating reaction to obtain a loose block intermetallic compound ;
[0012] (4) Pulverize the obtained intermetallic compound, grind it in a ball mill, and select Fe-Al intermetallic compound powder materials with differe...
Embodiment 2
[0014] Example 2, the above-mentioned iron powder was changed to nickel powder, 8.8 kg of nickel powder and 4 kg of aluminum powder were taken, and the method of the above-mentioned implementation 1 was followed to obtain a Ni-Al intermetallic compound powder core wire.
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