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Preparation method of potassium-sodium niobate ceramic material with high remnant polarization strength
The invention discloses a preparation method of a potassium-sodium niobate ceramic material with high remnant polarization strength, and relates to a preparation method for improving the remnant polarization strength of K0.5Na0.5NbO3 ceramic. The invention aims to solve the technical problem that the existing lead-free K0.5Na0.5NbO3 ceramic is low in remnant polarization intensity. The method comprises the following steps: mixing dried potassium carbonate and sodium carbonate powder with niobium pentoxide powder and then carrying out wet ball milling; drying, putting the dried raw materials into a tubular furnace for presintering, then carrying out wet ball milling, putting the dried raw materials into a hot-pressing furnace in an oxygen atmosphere for high-temperature and high-pressure sintering, and putting ceramic slices obtained by hot-pressing sintering into the tubular furnace for oxygen annealing so as to obtain the K0.5Na0.5NbO3 ceramic with high remnant polarization strength.The remnant polarization intensity of the ceramic is 24-27 [mu] C/cm < 2 >, which is 1.6-2.7 times that of K0.5Na0.5NbO3 ceramic prepared by a traditional solid-phase method, and the ceramic can be used in the fields of electricity and electronics.
一种具有高剩余极化强度的铌酸钾钠陶瓷材料的制备方法，它涉及提高KNaNbO陶瓷剩余极化强度的制备方法。它是要解决现有无铅KNaNbO陶瓷剩余极化强度低的技术问题。本方法：烘干之后的碳酸钾和碳酸钠粉末与五氧化二铌粉末混合后湿法球磨，烘干后放在管式炉预烧，然后再湿法球磨，烘干后在氧气气氛下放入热压炉中进行高温高压烧结，将热压烧结得到的陶瓷切片放入管式炉中进行氧气退火，可得到具有高剩余极化强度的KNaNbO陶瓷。该陶瓷的剩余极化强度为24～27μC/cm，是利用传统固相方法制备的KNaNbO陶瓷的1.6～2.7倍，可用于电气、电子领域。
Preparation method of potassium-sodium niobate ceramic material with high remnant polarization strength
The invention discloses a preparation method of a potassium-sodium niobate ceramic material with high remnant polarization strength, and relates to a preparation method for improving the remnant polarization strength of K0.5Na0.5NbO3 ceramic. The invention aims to solve the technical problem that the existing lead-free K0.5Na0.5NbO3 ceramic is low in remnant polarization intensity. The method comprises the following steps: mixing dried potassium carbonate and sodium carbonate powder with niobium pentoxide powder and then carrying out wet ball milling; drying, putting the dried raw materials into a tubular furnace for presintering, then carrying out wet ball milling, putting the dried raw materials into a hot-pressing furnace in an oxygen atmosphere for high-temperature and high-pressure sintering, and putting ceramic slices obtained by hot-pressing sintering into the tubular furnace for oxygen annealing so as to obtain the K0.5Na0.5NbO3 ceramic with high remnant polarization strength.The remnant polarization intensity of the ceramic is 24-27 [mu] C/cm < 2 >, which is 1.6-2.7 times that of K0.5Na0.5NbO3 ceramic prepared by a traditional solid-phase method, and the ceramic can be used in the fields of electricity and electronics.
一种具有高剩余极化强度的铌酸钾钠陶瓷材料的制备方法，它涉及提高KNaNbO陶瓷剩余极化强度的制备方法。它是要解决现有无铅KNaNbO陶瓷剩余极化强度低的技术问题。本方法：烘干之后的碳酸钾和碳酸钠粉末与五氧化二铌粉末混合后湿法球磨，烘干后放在管式炉预烧，然后再湿法球磨，烘干后在氧气气氛下放入热压炉中进行高温高压烧结，将热压烧结得到的陶瓷切片放入管式炉中进行氧气退火，可得到具有高剩余极化强度的KNaNbO陶瓷。该陶瓷的剩余极化强度为24～27μC/cm，是利用传统固相方法制备的KNaNbO陶瓷的1.6～2.7倍，可用于电气、电子领域。
Preparation method of potassium-sodium niobate ceramic material with high remnant polarization strength
一种具有高剩余极化强度的铌酸钾钠陶瓷材料的制备方法
LI JUN (author) / BAI HAN (author) / HONG YANG (author) / ZHOU ZHONGXIANG (author)
2020-08-11
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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