Ceramic composite material and method for processing members
A technology for ceramic composite materials and components, applied in the field of materials, can solve the problems of high alumina sintering temperature and high dielectric constant, and achieve the effect of reducing sintering temperature and reducing dielectric loss
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[0021] Example one
[0022] Weigh SiO according to the chemical composition in the table below 2 , H 3 BO 3 , (NH 4 )H 2 PO 4 , ZnO
[0023]
[0024] Add the weighed raw materials into ethanol, use alumina as a ball mill to ball mill in a planetary ball mill for 4 hours, then dry at 80°C for 6 hours, and then pre-fire the dried glass powder at 400°C;
[0025] The pre-fired 5wt% glass powder and 95wt% alumina powder are mixed, ethanol and binder are added for ball milling, dried through a 60-mesh sieve and granulated, and then pressed under a pressure of 120MPa to form the press. The resulting product is slowly heated to 500°C at a rate of 1°C / min and kept for 1 hour to ensure that the binder is completely removed. Then the temperature is raised to the maximum sintering temperature of 1300°C at 10°C / min and kept for 3 hours, then The temperature is lowered to 400°C at a rate of 20°C / min, and finally the desired product is obtained by cooling to room temperature with the furnace.
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Example Embodiment
[0027] Example two
[0028] Weigh SiO according to the chemical composition in the table below 2 , H 3 BO 3 , (NH 4 )H 2 PO 4 , ZnO
[0029]
[0030] Add the weighed raw materials into ethanol, use alumina as a ball mill to ball mill in a planetary ball mill for 4 hours, then dry at 80°C for 6 hours, and then pre-fire the dried glass powder at 400°C;
[0031] The pre-fired 15wt% glass powder and 85wt% alumina powder are mixed, ethanol and binder are added for ball milling, dried through a 60-mesh sieve and granulated, and then pressed under a pressure of 120MPa to form the press. The resulting product is slowly heated to 500°C at a rate of 1°C / min and kept for 1 hour to ensure that the binder is completely removed. Then, it is heated at 10°C / min to the maximum sintering temperature of 1200°C and kept for 3 hours. The temperature is lowered to 400°C at a rate of 20°C / min, and finally the desired product is obtained by cooling to room temperature with the furnace.
[0032] The molde...
Example Embodiment
[0033] Example three
[0034] Weigh SiO according to the chemical composition in the table below 2 , H 3 BO 3 , (NH 4 )H 2 PO 4 , ZnO
[0035]
[0036] Add the weighed raw materials into ethanol, use alumina as a ball mill to ball mill in a planetary ball mill for 4 hours, then dry at 80°C for 6 hours, and then pre-fire the dried glass powder at 400°C;
[0037] The pre-fired 30wt% glass powder and 70wt% alumina powder are mixed, ethanol and binder are added for ball milling, dried through a 60-mesh sieve and granulated, and then pressed under a pressure of 120MPa to form the press. The resulting product is slowly heated to 500°C at a rate of 1°C / min and kept for 1 hour to ensure that the binder is completely removed. Then the temperature is raised at 10°C / min to the maximum sintering temperature of 1100°C and kept for 3 hours, then The temperature is lowered to 400°C at a rate of 20°C / min, and finally the desired product is obtained by cooling to room temperature with the furnace...
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