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Potassium-sodium niobate lead-free transparent ferroelectric ceramic and preparation method thereof
The invention discloses potassium-sodium niobate lead-free transparent ferroelectric ceramic and a preparation method thereof, and belongs to the technical field of ceramic materials. The chemical general formula of the potassium-sodium niobate lead-free transparent ferroelectric ceramic is (K < 0.48 > Na < 0.52 >) NbO < 3-x > La < 2 > O < 3 >, and x represents the mole number of lanthanum oxide La < 2 > O < 3 > and ranges from 0.005 to 0.04. The preparation method of the potassium-sodium niobate lead-free transparent ferroelectric ceramic comprises the following steps: S1, weighing raw materials; s2, carrying out primary ball milling on the raw materials; s3, pre-sintering the primary mixed powder material; s4, carrying out secondary ball milling on the pre-sintered material; s5, adding a polyvinyl alcohol aqueous solution into the secondary mixed powder for granulation; s6, sieving the granulated powder materials; s7, the fine powder is subjected to tabletting and glue discharging treatment in sequence; s8, sintering the ceramic body; and S9, plating a silver electrode on the ceramic body, and applying voltage for polarization. By adopting the potassium-sodium niobate lead-free transparent ferroelectric ceramic and the preparation method thereof, the transparent ferroelectric ceramic material with high compactness and low dielectric loss is obtained, and has the advantages of good comprehensive properties of light transmission and ferroelectricity.
本发明公开了一种铌酸钾钠无铅透明铁电陶瓷及其制备方法，属于陶瓷材料技术领域。铌酸钾钠无铅透明铁电陶瓷化学通式为(K0.48Na0.52)NbO3‑xLa2O3，x表示氧化镧La2O3的摩尔数，x为0.005～0.04。铌酸钾钠无铅透明铁电陶瓷的制备方法，包括以下步骤：S1、称量原料；S2、对原料进行一次球磨；S3、对一次混合粉料进行预烧；S4、对预烧料进行二次球磨；S5、在二次混合粉料中加入聚乙烯醇水溶液进行造粒；S6、对造粒后的粉料进行过筛；S7、将细粉依次进行压片、排胶处理；S8、对陶瓷坯体进行烧结；S9、将陶瓷体镀银电极，施加电压进行极化。采用本发明所述的铌酸钾钠无铅透明铁电陶瓷及其制备方法，获得致密性高、低介电损耗的透明铁电陶瓷材料，具有透光性与铁电性综合性能好的优点。
Potassium-sodium niobate lead-free transparent ferroelectric ceramic and preparation method thereof
The invention discloses potassium-sodium niobate lead-free transparent ferroelectric ceramic and a preparation method thereof, and belongs to the technical field of ceramic materials. The chemical general formula of the potassium-sodium niobate lead-free transparent ferroelectric ceramic is (K < 0.48 > Na < 0.52 >) NbO < 3-x > La < 2 > O < 3 >, and x represents the mole number of lanthanum oxide La < 2 > O < 3 > and ranges from 0.005 to 0.04. The preparation method of the potassium-sodium niobate lead-free transparent ferroelectric ceramic comprises the following steps: S1, weighing raw materials; s2, carrying out primary ball milling on the raw materials; s3, pre-sintering the primary mixed powder material; s4, carrying out secondary ball milling on the pre-sintered material; s5, adding a polyvinyl alcohol aqueous solution into the secondary mixed powder for granulation; s6, sieving the granulated powder materials; s7, the fine powder is subjected to tabletting and glue discharging treatment in sequence; s8, sintering the ceramic body; and S9, plating a silver electrode on the ceramic body, and applying voltage for polarization. By adopting the potassium-sodium niobate lead-free transparent ferroelectric ceramic and the preparation method thereof, the transparent ferroelectric ceramic material with high compactness and low dielectric loss is obtained, and has the advantages of good comprehensive properties of light transmission and ferroelectricity.
本发明公开了一种铌酸钾钠无铅透明铁电陶瓷及其制备方法，属于陶瓷材料技术领域。铌酸钾钠无铅透明铁电陶瓷化学通式为(K0.48Na0.52)NbO3‑xLa2O3，x表示氧化镧La2O3的摩尔数，x为0.005～0.04。铌酸钾钠无铅透明铁电陶瓷的制备方法，包括以下步骤：S1、称量原料；S2、对原料进行一次球磨；S3、对一次混合粉料进行预烧；S4、对预烧料进行二次球磨；S5、在二次混合粉料中加入聚乙烯醇水溶液进行造粒；S6、对造粒后的粉料进行过筛；S7、将细粉依次进行压片、排胶处理；S8、对陶瓷坯体进行烧结；S9、将陶瓷体镀银电极，施加电压进行极化。采用本发明所述的铌酸钾钠无铅透明铁电陶瓷及其制备方法，获得致密性高、低介电损耗的透明铁电陶瓷材料，具有透光性与铁电性综合性能好的优点。
Potassium-sodium niobate lead-free transparent ferroelectric ceramic and preparation method thereof
一种铌酸钾钠无铅透明铁电陶瓷及其制备方法
LUO LI (author) / WANG LINGZHI (author) / WU WENJUAN (author) / LI JUNJIE (author) / YANG XU (author) / PAN YUDONG (author) / CHEN QINYI (author) / CHEN MINHUI (author)
2024-12-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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