Preparation method of high-corrosion-resistance NiMnInCo magnetic shape memory alloy
A technology of memory alloy and high corrosion resistance, which is applied in the field of smart materials and magnetic shape memory alloy corrosion resistance, can solve the problem of low corrosion resistance of magnetic memory alloy, and achieve the effect of large output strain and high output stress
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Embodiment 1
[0022] The preparation method of high wear resistance NiMnInCo magnetic shape memory alloy is prepared according to the following steps: according to the atomic percentage, 45 parts of Ni powder, 34 parts of Mn powder, 16 parts of In powder and 5 parts of Co powder are mixed with a particle size of 5 microns , Stir the metal powder in the agitator at a speed of 200 rpm-500 rpm to make it evenly mixed, then pour it into a pressure forming mold, press the mold with a jack, and pressurize to 400- Press the powder into a cylindrical sample with a diameter of 10 mm and a height of 10 mm under a pressure of 1000 MPa and hold the pressure for 2-4 minutes, and finally sinter at a temperature of 1000 ° C and a holding time of 40 minutes to obtain a particle size of 20-30 microns. NiMnInCo Magnetic Shape Memory Alloy.
Embodiment 2
[0024] The preparation method of high wear resistance NiMnIn and NiMnInCo magnetic shape memory alloy is prepared according to the following steps: according to the atomic percentage, take 45 parts of Ni powder, 34 parts of Mn powder, 16 parts of In powder, and 5 parts of In powder with a particle size of 5 microns. Mix the Co powder, stir the metal powder in the agitator at a speed of 200 rpm-500 rpm to make it evenly mixed, then pour it into the pressure forming mold, press the mold with a jack, and pressurize to Under the pressure of 400-1000MPa and holding pressure for 2-4min, the powder is pressed into a cylindrical sample with a diameter of 10mm and a height of 10mm, and finally sintered at a temperature of 1100°C and a holding time of 30min to obtain a particle size of 20- 30 micron NiMnIn and NiMnInCo magnetic shape memory alloys.
Embodiment 3
[0026]The preparation method of high wear resistance NiMnIn and NiMnInCo magnetic shape memory alloy is prepared according to the following steps: according to the atomic percentage, take 45 parts of Ni powder, 34 parts of Mn powder, 16 parts of In powder, and 5 parts of In powder with a particle size of 5 microns. Mix the Co powder separately, stir the metal powder in the agitator at a speed of 200 rpm-500 rpm to make it evenly mixed, then pour it into a pressure forming mold, press the mold with a jack, and pass the pressure Press the powder into a cylindrical sample with a diameter of 10mm and a height of 10mm under a pressure of 400-1000MPa and hold the pressure for 2-4min, and finally sinter at a temperature of 1200°C and a holding time of 20min to obtain a particle size of 20 - 30 micron NiMnIn and NiMnInCo magnetic shape memory alloys.
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