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Preparation method of potassium-sodium-niobate-based lead-free piezoelectric ceramic
The invention discloses a preparation method of a potassium-sodium-niobate-based lead-free piezoelectric ceramic, and relates to the field of lead-free piezoelectric materials. The method comprises the following steps: weighing the following raw materials in percentage by weight: 20-25% of potassium carbonate, 20-25% of sodium carbonate, 45-50% of niobium pentoxide and 5-10% of rare earth; carrying out primary mixing on the weighed potassium carbonate and sodium carbonate, carrying out vibration mixing on the dried powder, niobium pentoxide and rare earth, and after mixing, carrying out pre-sintering treatment to obtain primary powder; carrying out secondary mixing and granulation on the primary powder to obtain secondary powder; carrying out forming, plastic removal and sintering treatment on the secondary powder, polishing and cleaning a sintered blank, carrying out silver coating and polarization treatment, carrying out a piezoelectric property test on the polarized blank, and obtaining a final product after the test is completed. According to the invention, the piezoelectric ceramic material prepared by the method has high Curie temperature and high electromechanical coupling coefficient, and the service life of the leadless piezoelectric ceramic material can be remarkably prolonged.
一种铌酸钾钠基无铅压电陶瓷制备方法，涉及无铅压电材料领域。该方法按照重量百分比称取原料：碳酸钾20～25％、碳酸钠20～25％、五氧化二铌45～50％，稀土5～10％；将称取后的碳酸钾和碳酸钠进行一次混料后烘干，再将烘干粉体、五氧化二铌、稀土进行振动混合，混合后进行预烧处理得到一次粉料；将一次粉料进行二次混料、造粒得到二次粉料；将二次粉料进行成型、排塑、烧结处理，将烧结后的胚件进行打磨、清洗，然后进行被银、极化处理，再将极化后的胚件进行压电性能测试，测试完成后得到最终产品。发明制备的压电陶瓷材料具有高的居里温度，高机电耦合系数，能够显著提高无铅压电陶瓷材料的使用寿命。
Preparation method of potassium-sodium-niobate-based lead-free piezoelectric ceramic
The invention discloses a preparation method of a potassium-sodium-niobate-based lead-free piezoelectric ceramic, and relates to the field of lead-free piezoelectric materials. The method comprises the following steps: weighing the following raw materials in percentage by weight: 20-25% of potassium carbonate, 20-25% of sodium carbonate, 45-50% of niobium pentoxide and 5-10% of rare earth; carrying out primary mixing on the weighed potassium carbonate and sodium carbonate, carrying out vibration mixing on the dried powder, niobium pentoxide and rare earth, and after mixing, carrying out pre-sintering treatment to obtain primary powder; carrying out secondary mixing and granulation on the primary powder to obtain secondary powder; carrying out forming, plastic removal and sintering treatment on the secondary powder, polishing and cleaning a sintered blank, carrying out silver coating and polarization treatment, carrying out a piezoelectric property test on the polarized blank, and obtaining a final product after the test is completed. According to the invention, the piezoelectric ceramic material prepared by the method has high Curie temperature and high electromechanical coupling coefficient, and the service life of the leadless piezoelectric ceramic material can be remarkably prolonged.
一种铌酸钾钠基无铅压电陶瓷制备方法，涉及无铅压电材料领域。该方法按照重量百分比称取原料：碳酸钾20～25％、碳酸钠20～25％、五氧化二铌45～50％，稀土5～10％；将称取后的碳酸钾和碳酸钠进行一次混料后烘干，再将烘干粉体、五氧化二铌、稀土进行振动混合，混合后进行预烧处理得到一次粉料；将一次粉料进行二次混料、造粒得到二次粉料；将二次粉料进行成型、排塑、烧结处理，将烧结后的胚件进行打磨、清洗，然后进行被银、极化处理，再将极化后的胚件进行压电性能测试，测试完成后得到最终产品。发明制备的压电陶瓷材料具有高的居里温度，高机电耦合系数，能够显著提高无铅压电陶瓷材料的使用寿命。
Preparation method of potassium-sodium-niobate-based lead-free piezoelectric ceramic
一种铌酸钾钠基无铅压电陶瓷制备方法
TIAN DEHUI (author)
2022-02-18
Patent
Electronic Resource
Chinese
| European Patent Office | 2023
| European Patent Office | 2023
| European Patent Office | 2022