Nicral modified oxide ceramic reinforced iron-based composite material and its preparation method and application
A technology of iron-based composite materials and oxide ceramics, applied in metal material coating technology, transportation and packaging, metal processing equipment, etc., can solve the problem of increasing toughening difficulty, high manufacturing cost, and non-wetting of alumina and iron matrix. and other problems, to achieve the effect of increasing oxidation resistance, ensuring the effect of casting infiltration, and improving the strength of the matrix
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[0033] A kind of preparation method of NiCrAl modified oxide ceramics reinforced iron-based composite material of the present invention comprises the following steps:
[0034] S1, YSZ P The ceramic particles are soaked in alcohol for 10-20 minutes, then cleaned with ultrasonic waves for 5-25 minutes, and then dried in a vacuum drying oven;
[0035] S2. YSZ with irregular shape P Put it into a three-dimensional ball mill for ball milling treatment at a speed of 50-150r / min, and the duration is 1-10h, so that YSZ P The ceramic particles obtain a micro-roughened surface, which increases the binding sites of the NiCrAl alloy in the subsequent plating process, thereby improving the plating efficiency. Use a 5-60 mesh screen to filter YSZ P ceramic particles;
[0036] S3. Using the method of magnetron sputtering in YSZ P NiCrAl alloy is deposited on the surface of ceramic particles to make the surface metallized, and the vacuum degree of the cavity is 1.0×10 -3 ~1.0×10 -2 Pa, ...
Embodiment 1
[0045] YSZ first P Soak in alcohol for 10 minutes, then ultrasonic cleaning for 25 minutes, and then dry, the irregular shape of YSZ P Put it into a three-dimensional ball mill and mill it at a speed of 150r / min for 1 hour, and grind for 30 minutes and stop for 15 minutes each time; P The surface is plated with nickel-chromium-aluminum alloy, Ar (purity 99.99%) is the protective gas during plating, and the vacuum degree of the cavity is 1.0×10 -3 Pa, temperature 100°C, bias voltage 90V, current 1A, and plating time 30min to metallize the surface, and place YSZ in continuous rotation during the deposition process P The turntable, followed by ultrasonic cleaning for 15min, drying; then the YSZ plated with NiCrAl alloy P Stir and mix with micron-sized NiCrAl powder accounting for 10% of the mass of the ceramic and a binder accounting for 2% of the total mass of the mixed powder, and then put it into a mold for curing; put the preform into a vacuum tube furnace, heat it to 1100 ...
Embodiment 2
[0049] YSZ first P Soak in alcohol for 15 minutes, then ultrasonically clean for 10 minutes, then dry, and then place in a vacuum oven for 1 hour to dry the irregularly shaped YSZ P Put it into a three-dimensional ball mill and mill it at a speed of 120r / min for 3 hours, and stop for 15 minutes every 30 minutes; then use magnetron sputtering method in YSZ P The surface is plated with nickel-chromium-aluminum alloy, Ar (purity 99.99%) is the protective gas during plating, and the vacuum degree of the cavity is 3.0×10 -3 Pa, temperature 200°C, bias voltage 100V, current 3A, and plating time 2h to metallize the surface, and place YSZ in continuous rotation during the deposition process P The turntable, followed by ultrasonic cleaning for 15min, drying; then the YSZ plated with NiCrAl alloy P Stir and mix with micron-sized NiCrAl powder accounting for 20% of the mass of the ceramic and a binder accounting for 4% of the total mass of the mixed powder, and then put it into a mold ...
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