f-ca-lu doped aluminum nitride composite ceramic green body and its preparation process
A composite ceramic and preparation technology, which is applied in the field of aluminum nitride composite ceramics with high thermal conductivity, can solve the problem that the thickness of the ceramic substrate cannot meet the needs of electronic ceramics, and achieve the effect of good performance, stable quality and low sintering temperature of subsequent products
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Embodiment approach 1
[0024] The preparation process of the F-Ca-Lu doped aluminum nitride composite ceramic green body of the present embodiment, the preparation process includes the following steps carried out in sequence:
[0025] (1) In the high-speed dispersant, add a mixed solution of 65mL of absolute ethanol, 20mL of propylene glycol ether and 40mL of isopropanol into the container, and gradually add a mixture of 1g of fluorocarbon resin and 2g of polyvinyl butyral, particle size A mixture of 1.2μm yttrium-containing aluminum nitride powder 125g, 2g calcium oxide and 1g lutetium oxide, 0.3g polyethylene glycol, keep the stirring speed at 1700±200r / min, after stirring for 30-270min, add the remaining 15mL without A mixture of water ethanol, 5mL propylene glycol ether and 5mL isopropanol, 0.12g polyolefin wax and 0.2g dimethyl phthalate, and then stir at high speed (1600±200r / min) for 35-300min to obtain a slurry;
[0026] (2) Transfer the slurry to a sand mill for sand grinding. The grinding ...
Embodiment approach 2
[0033] The preparation process of the F-Ca-Lu doped aluminum nitride composite ceramic green body of the present embodiment, the preparation process includes the following steps carried out in sequence:
[0034](1) In the high-speed dispersant, add a mixed solution of 80mL of absolute ethanol, 40mL of propylene glycol ether and 20mL of isopropanol into the container, and gradually add a mixture of 0.4g of fluorocarbon resin and 1.6g of polyvinyl butyral, 180g of aluminum nitride powder with a particle size of 1.2μm, a mixture of 3g of calcium oxide and 1g of lutetium oxide, and 0.39g of polyethylene glycol. Keep the stirring speed at 1700±200r / min. After stirring for 60min, add the remaining 20mL of absolute ethanol , a mixture of 10mL propylene glycol ether and 5mL isopropanol, 0.12g polyolefin wax and 0.2g dimethyl phthalate, and then stirred at high speed (1600±200r / min) for 150min to obtain a slurry;
[0035] (2) Transfer the slurry to a sand mill for sand grinding. The gr...
Embodiment approach 3
[0042] The preparation process of the F-Ca-Lu doped aluminum nitride composite ceramic green body of the present embodiment, the preparation process includes the following steps carried out in sequence:
[0043] (1) In the high-speed dispersant, add the mixed solution of 78mL of absolute ethanol, 24mL of propylene glycol ether and 48mL of isopropanol into the container, gradually add the mixture of 1g of fluorocarbon resin and 2g of polyvinyl butyral, the particle size 162g of 2μm aluminum nitride powder with an oxygen content of 1%, a mixture of 3g of calcium oxide and 0.6g of lutetium oxide, and 0.25g of polyethylene glycol. Keep the stirring speed at 1700±200r / min. After stirring for 120min, add the remaining 18mL of absolute ethanol, 6mL of propylene glycol ether and 6mL of isopropanol mixture, 0.45g of polyolefin wax and 0.2g of dimethyl phthalate, and then stirred at high speed (1600±200r / min) for 200min to obtain a slurry;
[0044] (2) Transfer the slurry to a sand mill...
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