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The invention provides a preparation method of high-density barium calcium zirconate titanate lead-free ferroelectric ceramic, which comprises the following steps: S1, raw material preparation: synthesizing BCZT powder by using oxides of Ba, Ca, Zr and Ti in a molar ratio of 0.85: 0.15: 0.10: 0.90 as raw materials, putting the BCZT powder into a ball milling tank for ball milling, taking absolute ethyl alcohol and zirconium oxide grinding balls as ball milling media, and drying slurry obtained by ball milling in a drying oven; s2, crucible pre-sintering: putting the powder dried in the step S1 into a ceramic crucible, heating to 800-900 DEG C, keeping the temperature for 5-10 minutes, then heating to 1150-1250 DEG C, and keeping the temperature for 2-3 minutes; the barium calcium zirconate titanate lead-free ferroelectric ceramic is prepared through plasma activation and a hot compression method, the sintering activity of the powder is greatly improved, a high-density sintered body can be rapidly obtained in the later period of sintering under the coupling action of a temperature field and a high stress field, the sintering temperature is reduced by 200-250 DEG C, the production cost is saved, and the ferroelectric property is good.
本发明提供了一种高致密锆钛酸钡钙无铅铁电陶瓷的制备方法，包括以下步骤：S1，原料制备：以摩尔比为0.85:0.15:0.10:0.90的Ba、Ca、Zr、Ti的氧化物为原料合成BCZT粉，将BCZT粉放入球磨罐中球磨，球磨介质为无水乙醇和氧化锆磨球，将球磨所得浆料于烘箱中烘干；S2，坩埚预烧：将S1中烘干后的粉料放入陶瓷坩埚中，升温至800～900℃，并恒温5～10min，再升温至1150～1250℃，并恒温2～3min；通过等离子活化和热压缩法进行制备锆钛酸钡钙无铅铁电陶瓷，大大提高粉体的烧结活性，而在烧结的后期，又能在温度场与高应力场的耦合作用下，快速得到高致密烧结体，其降低了烧结温度200～250℃，节约了生产成本，且铁电性能良好。
The invention provides a preparation method of high-density barium calcium zirconate titanate lead-free ferroelectric ceramic, which comprises the following steps: S1, raw material preparation: synthesizing BCZT powder by using oxides of Ba, Ca, Zr and Ti in a molar ratio of 0.85: 0.15: 0.10: 0.90 as raw materials, putting the BCZT powder into a ball milling tank for ball milling, taking absolute ethyl alcohol and zirconium oxide grinding balls as ball milling media, and drying slurry obtained by ball milling in a drying oven; s2, crucible pre-sintering: putting the powder dried in the step S1 into a ceramic crucible, heating to 800-900 DEG C, keeping the temperature for 5-10 minutes, then heating to 1150-1250 DEG C, and keeping the temperature for 2-3 minutes; the barium calcium zirconate titanate lead-free ferroelectric ceramic is prepared through plasma activation and a hot compression method, the sintering activity of the powder is greatly improved, a high-density sintered body can be rapidly obtained in the later period of sintering under the coupling action of a temperature field and a high stress field, the sintering temperature is reduced by 200-250 DEG C, the production cost is saved, and the ferroelectric property is good.
本发明提供了一种高致密锆钛酸钡钙无铅铁电陶瓷的制备方法，包括以下步骤：S1，原料制备：以摩尔比为0.85:0.15:0.10:0.90的Ba、Ca、Zr、Ti的氧化物为原料合成BCZT粉，将BCZT粉放入球磨罐中球磨，球磨介质为无水乙醇和氧化锆磨球，将球磨所得浆料于烘箱中烘干；S2，坩埚预烧：将S1中烘干后的粉料放入陶瓷坩埚中，升温至800～900℃，并恒温5～10min，再升温至1150～1250℃，并恒温2～3min；通过等离子活化和热压缩法进行制备锆钛酸钡钙无铅铁电陶瓷，大大提高粉体的烧结活性，而在烧结的后期，又能在温度场与高应力场的耦合作用下，快速得到高致密烧结体，其降低了烧结温度200～250℃，节约了生产成本，且铁电性能良好。
Preparation method of high-density barium calcium zirconate titanate lead-free ferroelectric ceramic
一种高致密锆钛酸钡钙无铅铁电陶瓷的制备方法
2024-01-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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