Preparation method of high-heat-conduction aluminum nitride ceramic shaped part
An aluminum nitride ceramic, high thermal conductivity technology, applied in the field of electronic packaging materials, can solve the problems of high dielectric constant, high cost, low thermal conductivity, etc., and achieve the effects of reliable product quality, stable production process and low production cost.
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[0028] Example 1:
[0029] Such as figure 1 The process flow shown uses AlN powder (oxygen content 0.6wt%) with an average particle size of 1 micron as the basic raw material, propanol as the organic solvent, polyethyleneimine (PEI) as the dispersant, and yttrium oxide (Y 2 O 3 ) Is used as a sintering aid, hydantoin epoxy resin is used as a molding agent, and dipropylene triamine is used as a curing agent. After ball milling, molding, curing and drying, degreasing and sintering, the specific production process is as follows:
[0030] Prepare premix: add 0.30g polyethyleneimine (PEI) and 1.88g hydantoin epoxy resin to 12.5g propanol, stir to completely dissolve it to obtain a premix.
[0031] Mixing ball mill: weigh 48.5g of AlN powder with purity greater than 99% and yttrium oxide (Y 2 O 3 ) 1.5g is added to the premixed solution, zirconia balls are added (the volume ratio of the balls is about 1:1), ball milled in a roller ball mill for 24 hours to obtain an AlN slurry with a visco...
Example Embodiment
[0039] Example 2:
[0040] Such as figure 1 The process flow shown uses AlN powder with an average particle size of 1 micron (oxygen content less than 0.6wt%) as the basic raw material, propanol as the organic solvent, OP-85 emulsifier as the dispersant, and yttrium oxide as the sintering aid (Y 2 O 3 ) And calcium fluoride (CaF 2 ), using ethylene glycol diglycidyl ether (EGDGE) as the forming agent, and using triethylenetetramine as the curing agent, after ball milling, molding, curing drying, degreasing and sintering processes, the specific production process is as follows:
[0041] Prepare premix: add 1.0g OP-85 emulsifier and 1.88g ethylene glycol diglycidyl ether (EGDGE) to 12.5g propanol, stir to completely dissolve it to obtain a premix.
[0042] Mixing ball mill: weigh 50g of AlN powder with purity greater than 99%, yttrium oxide (Y 2 O 3 ) 1.5g, calcium fluoride (CaF 2 ) 1g, added to the premix, added zirconia balls (the volume ratio of balls is about 1:1), ball milled in ...
Example Embodiment
[0050] Example 3:
[0051] Such as figure 1 The process flow shown uses AlN powder with an average particle size of 2 microns (oxygen content 0.65wt%) as the basic raw material, ethanol as the organic solvent, polyethyleneimine (PEI) as the dispersant, and yttrium fluoride as the sintering aid (YF 3 ) And calcium fluoride (CaF 2 ), using sorbitol polyglycidyl ether (SPGE) as a forming agent and dipropylene triamine as a curing agent. After ball milling, molding, curing and drying, degreasing and sintering, the specific production process is as follows:
[0052] Premix preparation: add 0.30g polyethyleneimine (PEI) and 1.84g sorbitol polyglycidyl ether (SPGE) to 12.25g ethanol, stir to completely dissolve to obtain a premix.
[0053] Mixing ball mill: weigh 50g of AlN powder with a purity greater than 99% and yttrium fluoride (Y 2 O 3 ) 1.5g, 2.0g of calcium fluoride, add to the premix, add zirconia balls (the volume ratio of the balls is about 1:1), ball mill in a roller ball mill f...
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