Low-temperature co-fired ceramic material with high thermal conductivity and preparation method thereof
A technology of low-temperature co-fired ceramics and high thermal conductivity, which is applied in the field of electronic packaging materials, can solve the problems of no technological breakthrough and low thermal conductivity of AlN/glass composite system, and achieve simple synthesis process, promote phonon heat conduction, low cost effect
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[0032] Preparation of glass-ceramic powder
[0033] Prepare No. 1 to No. 5 glass powder according to the proportioning in Table 1:
[0034] Table 1 The formula (wt%) of glass powder and its performance parameters:
[0035]
[0036] Accurately weigh 100 g of raw materials according to the percentage by weight in Table 1 (wherein, B 2 o 3 Use H 3 BO 3 As a starting material, MgCO 3 ·Mg(OH) 2 ·5H 2 O can be used as a starting material for MgO, CaCO 3 It can be used as the starting material of CaO), put it into an alumina mortar and mix it evenly, then transfer it to a quartz crucible, then place the quartz crucible in a high-temperature furnace, and raise it from room temperature to 1300-1500°C, with a heating rate of 5- 10°C / min, keep warm for 1-2h. Pour the molten glass directly into cold deionized water to form cullet particles. Put the obtained broken glass particles with 80 ml of ethanol and 400 g of zirconia balls into a ball mill jar and mill them in a planeta...
Embodiment 1
[0039] Weigh 5 g of the above No. 3 glass powder and 5 g of AlN powder, mix them with 10 ml of ethanol, 40 g of ZrO 2 The balls were put into a ball milling tank for 24 h, and then transferred to a glass container for drying at 90 °C. Weigh 0.5 g of the mixture powder, put it into a graphite grinding tool with a diameter of 10 mm, place it in an SPS sintering furnace, raise it from room temperature at 100 °C / min to 850 °C, press 40 MPa, and keep it warm for 5 min.
Embodiment 2
[0041] Take 3.5 g of the above No. 3 glass powder and 6.5 g of AlN powder, mix them with 10 ml of ethanol, 40 g of ZrO 2 The balls were put into a ball milling tank for 24 h, and then transferred to a glass container for drying at 90 °C. Weigh 0.5 g of the mixture powder, put it into a graphite grinding tool with a diameter of 10 mm, place it in an SPS sintering furnace, raise it from room temperature at 100 °C / min to 850 °C, press 40 MPa, and keep it warm for 5 min.
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