A kind of preparation method of magnesium-based composite material reinforced by nano MGO particles
A particle reinforced, composite material technology, applied in the field of materials, can solve the problems of coarse MgO ceramic particle size, influence of magnesium matrix composite material performance, difficult control of MgO content, etc., to achieve good interface bonding, small grain size, MgO generation amount controllable effect
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Embodiment 1
[0019] Weigh 2g of magnesium powder (purity is 99.5wt.%), measure 5ml of n-hexane as a grinding aid, and put them into a 50ml inflatable ball mill jar together and seal it. Vacuumize the ball mill jar, then pass 0.05MPa oxygen (purity: 99.9vol.%) into the ball mill jar from the air inlet at one end, put the ball mill jar into the ball mill, the ball mill time is 10 hours, and the ball mill speed is 1000rpm . After the reaction is complete, the volume fraction of MgO in the composite material powder is 5%;
[0020] After ball milling, take the powder out of the glove box, then put it in a vacuum drying oven, and dry it in vacuum at 80°C for 10 hours; put the dried powder into a mold, and cold press it into a block blank at room temperature at 4 MPa; The blank was loaded into a press for high-pressure sintering at a sintering pressure of 2GPa, a sintering temperature of 400°C, and a holding time of 0.5 hours to obtain a magnesium-based composite material block reinforced with n...
Embodiment 2
[0022] Weigh 2g of magnesium powder (purity is 99.5wt.%), measure 5ml of n-hexane as a grinding aid, and put them into a 50ml inflatable ball mill jar together and seal it. Vacuumize the ball mill jar, then pass 0.1MPa oxygen (purity: 99.9vol.%) into the ball mill jar from the air inlet at one end, put the ball mill jar into the ball mill, the ball mill time is 10 hours, and the ball mill speed is 1000rpm . After the reaction is complete, the volume fraction of MgO in the composite material powder is 10%;
[0023] After ball milling, take the powder out of the glove box, then put it in a vacuum drying oven, and dry it in vacuum at 100°C for 10 hours; put the dried powder into a mold, and cold press it into a block blank at room temperature at 5 MPa; The blank was loaded into a press for high-pressure sintering at a sintering pressure of 4GPa, a sintering temperature of 500°C, and a holding time of 0.5 hours to obtain a magnesium-based composite material block reinforced with ...
Embodiment 3
[0027] Weigh 2g of magnesium powder (purity is 99.5wt.%), measure 5ml of n-hexane as a grinding aid, and put them into a 50ml inflatable ball mill jar together and seal it. Vacuumize the ball mill jar, then use 0.15MPa oxygen (purity: 99.9vol.%) to pass into the ball mill jar from the air inlet at one end, put the ball mill jar into the ball mill, the ball mill time is 15 hours, and the ball mill speed is 1000rpm . After the reaction is complete, the volume fraction of MgO in the composite material powder is 15%;
[0028] After ball milling, take the powder out of the glove box, then put it in a vacuum drying oven, and dry it in vacuum at 90°C for 10 hours; put the dried powder into a mold, and cold press it into a block blank at room temperature at 6 MPa; The blank was loaded into a press for high-pressure sintering at a sintering pressure of 4GPa, a sintering temperature of 550°C, and a holding time of 1 hour to obtain a magnesium-based composite material block reinforced w...
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