Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses a method for preparing piezoelectric ceramics based on a hot isostatic pressing process, which comprises the steps of weighing corresponding raw materials according to a certain stoichiometric ratio, uniformly mixing the weighed raw materials, carrying out mould pressing to form a block, carrying out presintering treatment, then crushing and sieving, filling powder into a rubber sheath, carrying out cold isostatic treatment, putting a blank formed by treatment into an iron sheath, covering an upper cover with a degassing pipe, welding the upper cover and a sheath body, degassing, sealing and welding the degassing pipe after degassing is finished, carrying out hot isostatic pressing treatment on the degassed sheath, processing an ingot blank subjected to hot isostatic pressing into a required shape, preparing a silver electrode on the surface, putting a sample into high-temperature silicone oil, applying electric field polarization. The preparation method has the beneficial effects that organic adhesive residues are avoided, the problem of inaccurate stoichiometric ratio is avoided, the product is high in density and free of pores, the piezoelectric property of the product is improved, the mechanical property of the ceramic is improved, and the service cycle and the use stability of the piezoelectric ceramic are greatly prolonged.
本发明公开了一种基于热等静压工艺制备压电陶瓷的方法，包括以下步骤，按一定比例的化学计量比称量相应的原料，将称量完成的原料混合均匀模压成块体，进行预烧处理，然后粉碎过筛，粉末装入橡胶包套中，进行冷等静处理，处理形成的坯料放入铁制包套中，盖上带有脱气管的上盖，并将上盖与套体焊接，进行脱气，完成后封焊脱气管，脱气完成的包套进行热等静压处理，热等静压完成的锭坯加工成所需形状，并在表面制备银电极，将样品放入高温硅油中，施加电场极化。本发明的有益效果：避免了有机粘接剂残留，避免了化学计量比不准确问题，产品致密度高、无气孔，提升了产品压电性能，改善了陶瓷的力学性能，大大增加了压电陶瓷的服役周期和使用稳定性。
The invention discloses a method for preparing piezoelectric ceramics based on a hot isostatic pressing process, which comprises the steps of weighing corresponding raw materials according to a certain stoichiometric ratio, uniformly mixing the weighed raw materials, carrying out mould pressing to form a block, carrying out presintering treatment, then crushing and sieving, filling powder into a rubber sheath, carrying out cold isostatic treatment, putting a blank formed by treatment into an iron sheath, covering an upper cover with a degassing pipe, welding the upper cover and a sheath body, degassing, sealing and welding the degassing pipe after degassing is finished, carrying out hot isostatic pressing treatment on the degassed sheath, processing an ingot blank subjected to hot isostatic pressing into a required shape, preparing a silver electrode on the surface, putting a sample into high-temperature silicone oil, applying electric field polarization. The preparation method has the beneficial effects that organic adhesive residues are avoided, the problem of inaccurate stoichiometric ratio is avoided, the product is high in density and free of pores, the piezoelectric property of the product is improved, the mechanical property of the ceramic is improved, and the service cycle and the use stability of the piezoelectric ceramic are greatly prolonged.
本发明公开了一种基于热等静压工艺制备压电陶瓷的方法，包括以下步骤，按一定比例的化学计量比称量相应的原料，将称量完成的原料混合均匀模压成块体，进行预烧处理，然后粉碎过筛，粉末装入橡胶包套中，进行冷等静处理，处理形成的坯料放入铁制包套中，盖上带有脱气管的上盖，并将上盖与套体焊接，进行脱气，完成后封焊脱气管，脱气完成的包套进行热等静压处理，热等静压完成的锭坯加工成所需形状，并在表面制备银电极，将样品放入高温硅油中，施加电场极化。本发明的有益效果：避免了有机粘接剂残留，避免了化学计量比不准确问题，产品致密度高、无气孔，提升了产品压电性能，改善了陶瓷的力学性能，大大增加了压电陶瓷的服役周期和使用稳定性。
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