Low-temperature sintering method for enhancing strength of ceramic green body
A ceramic green body and low-temperature sintering technology, which is applied in the field of ceramic processing, can solve the problems of high sintering temperature, long sintering time, and large energy consumption, so as to reduce the sintering temperature, reduce the sintering temperature and sintering time, and prolong the service life Effect
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[0020] Example 1
[0021] A low-temperature sintering method for enhancing the strength of a ceramic body includes the following steps:
[0022] (1) One-time drying: After the green body is prepared, perform microwave drying at a frequency of 760MHz, a power of 0.04kW, heating for 5s, stopping for 60s, and drying to a moisture content of 35-40%, uniformly and slowly removing part of the water in the green body , Reduce the gas and voids in the ceramic green body, make the particles in the green body closer, lower the sintering temperature of the green body, and dry the green body once;
[0023] (2) Spraying: spray the surface care agent uniformly on the surface of the once-dried green body, the spraying amount of the surface care agent is 0.5ml / dm each time 2 , Consists of the following parts by weight of raw materials: sodium selenite 14, nano silica 7, nano silver 6, borax 2, water 400, continuous spraying 2 times, the interval between the two is 3h, the surface care agent is made ...
Example Embodiment
[0029] Example 2
[0030] A low-temperature sintering method for enhancing the strength of a ceramic body includes the following steps:
[0031] (1) One-time drying: After the green body is prepared, perform microwave drying at a frequency of 780MHz, a power of 0.05kW, heating for 6s, stopping for 65s, and drying to a moisture content of 35-40%, uniformly and slowly removing part of the water in the green body , Reduce the gas and voids in the ceramic green body, make the particles in the green body closer, lower the sintering temperature of the green body, and dry the green body once;
[0032] (2) Spraying: spray the surface care agent uniformly on the surface of the once-dried green body, the spraying amount of the surface care agent is 0.6ml / dm each time 2 , Consists of the following parts by weight of raw materials: sodium selenite 15, nano silica 8, nano silver 7, borax 2.5, water 450, continuous spraying 2 times, the interval between the two is 3.5h, the surface care agent cons...
Example Embodiment
[0038] Example 3
[0039] A low-temperature sintering method for enhancing the strength of a ceramic body includes the following steps:
[0040] (1) One-time drying: After the green body is prepared, perform microwave drying, frequency of 800MHz, power of 0.06kW, heating for 7s, stop for 70s, and drying to a moisture content of 35-40%, uniformly and slowly remove part of the water in the green body , Reduce the gas and voids in the ceramic green body, make the particles in the green body closer, lower the sintering temperature of the green body, and dry the green body once;
[0041] (2) Spraying: spray the surface care agent uniformly on the surface of the once-dried green body, the spraying amount of the surface care agent is 0.7ml / dm each time 2 , Consists of the following parts by weight of raw materials: sodium selenite 16, nano-silica 9, nano-silver 8, borax 3, water 500, continuous spraying 2 times, the interval between the two is 4h, the surface care agent consists of a variet...
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