Zirconium dioxide toughened flaky aluminum oxide-based composite ceramic and preparation method thereof
A technology of flake alumina and composite ceramics, which is applied in the field of composite materials, can solve problems such as poor toughness, achieve the effects of increasing the probability of crack bridging, improving fracture toughness and strength, and saving costs
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[0056] Example 1
[0057] (1) Take a certain amount of deionized water and place it in a beaker, add Al 2 O 3 Powder and ZrO 2 2% of the powder mass of polyacrylic acid (PAA) and 1% of polyethylene glycol (PEG), place the beaker on a magnetic stirring device and stir at 60-90°C and 150-250 rpm until all are dissolved;
[0058] (2) Slowly add 20-40g Al to the solution obtained in step (1) 2 O 3 Powder and adjust the pH value of the solution to 10~11;
[0059] (3) Place the beaker in the ultrasonic cleaning machine, and use the paddle-type stirring device to stir at the same time, and slowly add 5-10g ZrO during the ultrasonic coordinated stirring process 2 Powder. After adding, continue ultrasonic and coordinated stirring for 30 minutes to prepare ZTA ceramic slurry;
[0060] (4) Put the ZTA slurry of step (3) in a planetary ball milling tank, and use zirconia balls for planetary ball milling for 2 to 4 hours;
[0061] (5) The ZTA slurry after planetary ball milling is dried using a rot...
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