A method for improving corrosion resistance of iron-based nanocrystalline alloy strip
A technology of iron-based nanocrystalline and alloy strips, which is applied in the field of soft magnetic materials, can solve problems affecting the soft magnetic properties of nanocrystalline alloy strips, increase the thickness of nanocrystalline alloy strips, etc., achieve surface passivation and reduce heat treatment time , Improve the effect of soft magnetic properties
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[0023] (1) Add the alloy raw material into the melting furnace according to the mass percentage shown in Table 1, heat it at 1540°C for 20 minutes after melting, and add a purifying agent, wherein the purifying agent consists of 53% silicon dioxide, 37% calcium oxide, 12% Composed of iron scale, the slag is left for many times, and finally the components in the alloy mother liquor are evenly distributed, and the respective contents of Al, O, and N are below 10ppm;
[0024] (2) Import the alloy mother liquor in the smelting furnace into the tundish, seal the nozzle with a stopper rod, and let it stand for 30 minutes to make the temperature of the mother liquor even;
[0025] (3) Then lift the plug rod, the mother liquor enters the nozzle bag, and is shot onto the cooling roller rotating at high speed through the nozzle, so that the alloy mother liquor 6 ~10 7 The speed of ℃ / sec is cooled and formed to obtain a soft magnetic alloy strip. Among them, the spray casting pressure i...
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