Preparation method of Mg/Zn gradient alloy
A gradient alloy and magnesium alloy technology, which is applied in metal material coating process, ion implantation plating, coating, etc., can solve problems such as complex processing technology
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Embodiment 1
[0022] S1. Take a metal magnesium sheet with a diameter of 10mm and a thickness of 2.5mm as a sample, and use water sandpaper of No. 600, No. 1000, No. 1500, No. 2000 and No. 2500 to polish it step by step and then polish it to the surface roughness Ra It is about 1 μm, and then ultrasonically cleaned with absolute ethanol for 5 minutes to remove impurities and oil on the surface of the material, and placed in the air to dry; then, put the metal magnesium sheet and the zinc target into the vacuum tank of the vacuum coating machine, and use a mechanical pump and The molecular pump vacuumizes the vacuum tank until the pressure inside the vacuum tank is 1.3×10 -3 Pa;
[0023] S2. Galvanizing the magnesium metal by vacuum evaporation; wherein, the coating time is 25 minutes, and the thickness of the formed zinc film is 8 μm;
[0024] S3. Raise the temperature of the coated magnesium metal sheet to 400° C. and keep it warm for 1 hour to obtain the Mg / Zn gradient alloy sample I.
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Embodiment 2
[0027] S1. Take the AZ91D magnesium alloy with a diameter of 10mm and a thickness of 2.5mm as a sample, and use water sandpaper of No. 600, No. 1000, No. 1500, No. 2000 and No. 2500 to polish it step by step and then polish it to the surface roughness Ra It is about 0.5 μm, and then ultrasonically cleaned with absolute ethanol for 5 minutes to remove impurities and oil stains on the surface of the material, and placed in the air to dry; then, put the metal magnesium sheet and zinc target into the vacuum tank of the vacuum coating machine, and use a mechanical pump Vacuumize the vacuum tank with the molecular pump until the pressure inside the vacuum tank is 5×10 -3 Pa;
[0028] S2. Magnetron sputtering is used to galvanize the magnesium metal; wherein, the coating time is 30 minutes, and the thickness of the formed zinc film is 15 μm;
[0029] S3. Raise the temperature of the coated magnesium metal sheet to 450° C. and keep it warm for 0.5 hour to obtain the Mg / Zn gradient al...
Embodiment 3
[0032] S1. Take the AZ91D magnesium alloy with a diameter of 10mm and a thickness of 2.5mm as a sample, and use water sandpaper of No. 600, No. 1000, No. 1500, No. 2000 and No. 2500 to polish it step by step and then polish it to the surface roughness Ra It is about 0.2 μm, and then ultrasonically cleaned with absolute ethanol for 5 minutes to remove impurities and oil stains on the surface of the material, and placed in the air to dry; then, put the metal magnesium sheet and zinc target into the vacuum tank of the vacuum coating machine, and use a mechanical pump Vacuumize the vacuum tank with the molecular pump until the pressure inside the vacuum tank is 2.5×10 -3 Pa; Among them, the quality of the zinc target should be greater than the quality required for its coating;
[0033] S2. Magnetron sputtering is used to galvanize the magnesium metal; wherein, the coating time is 10 minutes, and the thickness of the formed zinc film is 5 μm;
[0034] S3. Heating the metal magnesi...
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