Preparation method for metal ceramic composite
A technology of cermets and composites, applied in the field of ceramics, can solve the problems of poor impact resistance and poor wear resistance, and achieve the effects of increasing service life, improving wear resistance, and better absorbing impact energy
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Embodiment 1
[0020] The preparation method of the metal-ceramic composite body comprises the following steps: step 1, take microcapsule powder, alumina powder and absolute ethanol according to the weight ratio of 1:3:3, after mixing, ultrasonically disperse at an ultrasonic frequency of 45KHz for 25min, and then Carry out suction filtration under the vacuum condition that vacuum degree is 0.098MPa, stop suction filtration when there is no more ethanol liquid dripping, take out filtrate, set aside;
[0021] Step 2. Put the filtrate obtained in step 1 in an oven, dry at 30°C×6h and preheat at 50°C×20min in sequence, take out the preheated material and place it in a press, Pre-press for 5 minutes under 2MPa pressure, then hot-press for 30 minutes at 5MPa and 150°C, and cool down to room temperature naturally to prepare alumina ceramic microcapsule powder for later use;
[0022] Step 3. Mix the polyvinyl alcohol with a weight ratio of 3:25 and the alumina ceramic microcapsule powder prepared i...
Embodiment 2
[0026] The preparation method of the metal-ceramic composite body comprises the following steps: step 1, take microcapsule powder, alumina powder and absolute ethanol according to the weight ratio of 1:3:3, after mixing, ultrasonically disperse at an ultrasonic frequency of 40KHz for 23min, and then Carry out suction filtration under the vacuum condition that vacuum degree is 0.098MPa, stop suction filtration when there is no more ethanol liquid dripping, take out filtrate, set aside;
[0027] Step 2. Put the filtrate obtained in step 1 in an oven, dry at 30°C×6h and preheat at 50°C×20min in sequence, take out the preheated material and place it in a press, Pre-press for 5 minutes under 2MPa pressure, then hot-press for 30 minutes at 5MPa and 150°C, and cool down to room temperature naturally to prepare alumina ceramic microcapsule powder for later use;
[0028] Step 3. Mix the organic binder with a weight ratio of 1:18 and the alumina ceramic microcapsule powder prepared in S...
Embodiment 3
[0032] The preparation method of the metal-ceramic composite body comprises the following steps: Step 1. Weigh microcapsule powder, alumina powder and absolute ethanol according to the weight ratio of 1:3:3, and after mixing, ultrasonically disperse at an ultrasonic frequency of 50KHz for 20 minutes, and then Carry out suction filtration under the vacuum condition that vacuum degree is 0.098MPa, stop suction filtration when there is no more ethanol liquid dripping, take out filtrate, set aside;
[0033]Step 2. Put the filtrate obtained in step 1 in an oven, dry at 30°C×6h and preheat at 50°C×20min in sequence, take out the preheated material and place it in a press, Pre-press for 5 minutes under 2MPa pressure, then hot-press for 30 minutes at 5MPa and 150°C, and cool down to room temperature naturally to prepare alumina ceramic microcapsule powder for later use;
[0034] Step 3, granulating the alumina ceramic microcapsule powder prepared in step 2 to obtain ceramic granules w...
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