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Preparation method of potassium sodium niobate-based piezoelectric crystal
The invention discloses a preparation method of a potassium sodium niobate-based piezoelectric crystal. The preparation method comprises the following steps: s1, weighing sodium carbonate, potassium carbonate, niobium oxide, bismuth oxide, lithium carbonate and tantalum oxide according to a preset molar ratio; s2, adding absolute ethyl alcohol into the weighed raw materials for ball milling, and drying a ground slurry; s3, placing the dried powder in a high-temperature box type furnace to be pre-sintered; s4, adding an aqueous solution of polyvinyl alcohol into the pre-sintered powder, grinding and sieving to obtain powder; and s5, putting the prepared powder into a mold, pressurizing to prepare tablets, putting the tablets into a high-temperature furnace, sintering, cooling, and taking out, thereby obtaining the potassium sodium niobate-based piezoelectric single crystal. The potassium sodium niobate-based piezoelectric crystal is prepared through a seedless crystal solid-phase growthmethod, a proper amount of bismuth oxide is doped into raw materials, then the ceramic-based crystal is obtained through sintering by means of a high-temperature solid-phase method, and the preparation method has the advantage of being low in cost.
本发明公开了一种铌酸钠钾基压电晶体的制备方法，包括：S1.按照预设摩尔比称取碳酸钠、碳酸钾、氧化铌、氧化铋、碳酸锂及氧化钽；S2.往称取的原料中加入无水乙醇进行球磨，并将研磨后的浆料干燥；S3.将干燥后的料粉置于高温箱式炉中预烧；S4.往预烧完成的粉末中加入聚乙烯醇的水溶液进行研磨并过筛，得到粉末；S5.将制备得到的粉末置于模具中加压制成压片，并将压片放入高温炉中烧结，冷却后取出，制备得到铌酸钠钾基压电单晶。其通过无籽晶固相生长法制备铌酸钠钾基压电晶体，在原料中掺入适量的氧化铋，再利用高温固相法烧结得到陶瓷基的晶体，该制备方法具有低成本的特点。
Preparation method of potassium sodium niobate-based piezoelectric crystal
The invention discloses a preparation method of a potassium sodium niobate-based piezoelectric crystal. The preparation method comprises the following steps: s1, weighing sodium carbonate, potassium carbonate, niobium oxide, bismuth oxide, lithium carbonate and tantalum oxide according to a preset molar ratio; s2, adding absolute ethyl alcohol into the weighed raw materials for ball milling, and drying a ground slurry; s3, placing the dried powder in a high-temperature box type furnace to be pre-sintered; s4, adding an aqueous solution of polyvinyl alcohol into the pre-sintered powder, grinding and sieving to obtain powder; and s5, putting the prepared powder into a mold, pressurizing to prepare tablets, putting the tablets into a high-temperature furnace, sintering, cooling, and taking out, thereby obtaining the potassium sodium niobate-based piezoelectric single crystal. The potassium sodium niobate-based piezoelectric crystal is prepared through a seedless crystal solid-phase growthmethod, a proper amount of bismuth oxide is doped into raw materials, then the ceramic-based crystal is obtained through sintering by means of a high-temperature solid-phase method, and the preparation method has the advantage of being low in cost.
本发明公开了一种铌酸钠钾基压电晶体的制备方法，包括：S1.按照预设摩尔比称取碳酸钠、碳酸钾、氧化铌、氧化铋、碳酸锂及氧化钽；S2.往称取的原料中加入无水乙醇进行球磨，并将研磨后的浆料干燥；S3.将干燥后的料粉置于高温箱式炉中预烧；S4.往预烧完成的粉末中加入聚乙烯醇的水溶液进行研磨并过筛，得到粉末；S5.将制备得到的粉末置于模具中加压制成压片，并将压片放入高温炉中烧结，冷却后取出，制备得到铌酸钠钾基压电单晶。其通过无籽晶固相生长法制备铌酸钠钾基压电晶体，在原料中掺入适量的氧化铋，再利用高温固相法烧结得到陶瓷基的晶体，该制备方法具有低成本的特点。
Preparation method of potassium sodium niobate-based piezoelectric crystal
一种铌酸钠钾基压电晶体的制备方法
HUANG XIAO (Autor:in) / ZHANG SHAOHUA (Autor:in) / XIE BING (Autor:in) / HUANG SHENGYANG (Autor:in)
26.02.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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