A Si3N4-based ceramic tool material with graphene added and its preparation method
A ceramic tool and graphene technology, which is applied in the Si3N4-based ceramic tool material with graphene added and its preparation field, can solve the problems of prone to produce pores and defects, the overall performance needs to be improved, and the matrix is not tightly bonded, etc., to achieve good comprehensive mechanics performance, improving comprehensive mechanical properties and lubricating properties, and the effect of complete morphology
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Embodiment 1
[0056] Si 3 N 4 / Graphene composite ceramic tool material, the mass percentage of raw material composition is: graphene is 0.5%, A1 2 o 3 2%, Y 2 o 3 is 4%, MgO is 2%, and the rest is Si 3 N 4 .
[0057] The preparation steps are as follows:
[0058] According to Si 3 N 4 Weigh 0.5% of the mass of polyvinylpyrrolidone (PVP, K30) into 70mL isopropanol, ultrasonically disperse and mechanically stir for 10min, until it is completely dissolved; weigh Si 3 N 4 and added to the solution, ultrasonically dispersed and mechanically stirred for 30min to obtain Si 3 N 4 Dispersions.
[0059] According to A1 2 o 3 , Y 2 o 3 and 0.5% of the total mass of MgO weighed polyvinylpyrrolidone (PVP, K30) into 50mL of isopropanol, ultrasonically dispersed and mechanically stirred for 10min, until it was completely dissolved; weighed A1 2 o 3 Add to the solution, ultrasonically disperse and mechanically stir for 10min, weigh Y 2 o 3 Add it into the solution, ultrasonically disp...
Embodiment 2
[0063] Si 3 N 4 / Graphene composite ceramic tool material, the mass percentage of raw material composition is: graphene is 1%, A1 2 o 3 2%, Y 2 o 3 is 4%, MgO is 2%, and the rest is Si 3 N 4 .
[0064] The preparation steps are as follows:
[0065] According to Si 3 N 4 Weigh 1% of the mass of polyvinylpyrrolidone (PVP, K30) into 70mL of isopropanol, ultrasonically disperse and mechanically stir for 20min, until it is completely dissolved; weigh Si 3 N 4 and added to the solution, ultrasonically dispersed and mechanically stirred for 20min to obtain Si 3 N 4 Dispersions.
[0066]According to A1 2 o 3 , Y 2 o 3 Add 1% of the total mass of MgO to polyvinylpyrrolidone (PVP, K30) and add it to 50mL of isopropanol, ultrasonically disperse and mechanically stir for 20min, until it is completely dissolved; weigh A1 2 o 3 Add to the solution, ultrasonically disperse and mechanically stir for 20min, weigh Y 2 o 3 Add it into the solution, ultrasonically disperse an...
Embodiment 3
[0070] Si 3 N 4 / Graphene composite ceramic tool material, the mass ratio of raw material composition is: graphene is 2%, A1 2 o 3 2%, Y 2 o 3 is 4%, MgO is 2%, and the rest is Si 3 N 4 .
[0071] The preparation method steps are as follows:
[0072] According to Si 3 N 4 Weigh 2% of the mass of polyvinylpyrrolidone (PVP, K30) into 70mL of isopropanol, ultrasonically disperse and mechanically stir for 30min, until it is completely dissolved; weigh Si 3 N 4 and added to the solution, ultrasonically dispersed and mechanically stirred for 10 min to obtain Si 3 N 4 Dispersions.
[0073] According to A1 2 o 3 , Y 2 o 3 Weigh polyvinylpyrrolidone (PVP, K30) and add 2% of the total mass of MgO into 50mL isopropanol, ultrasonically disperse and mechanically stir for 30min, until it is completely dissolved; weigh A1 2 o 3 Add to the solution, ultrasonically disperse and mechanically stir for 10min, weigh Y 2 o 3 Add it into the solution, ultrasonically disperse and...
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