(Na0.52K0.44Li0.04)(Nb0.9Sb0.04Ta0.06) O3压电陶瓷及蜂鸣器的制备与性能
Preparation and Property of (Na0.52K0.44Li0.04)(Nb0.9Sb0.04Ta0.06)O3 Piezoelectric Ceramics and Ceramic Buzzer
摘 要
采用固相烧结法制备了φ15 mm×0.1 mm的（Na0.52K0.44Li0.04）（Nb0.9Sb0.04Ta0.06）O3压电陶瓷，研究了其微观结构、电学性能以及热退极化性能；将该陶瓷封装制成蜂鸣器，测试了其声学性能并与市购铅基蜂鸣器进行了对比。结果表明：该陶瓷具有单一的四方相钙钛矿结构，在低于其居里温度（265℃）条件下的压电常数、机电耦合系数分别约为280 pC·N-1，达到未升温陶瓷的89.2%，温度稳定性好；在1~4 kHz、9 V交流电条件下，由该陶瓷组装的蜂鸣器的声压级略小于铅基蜂鸣器的，在2 kHz、3 V条件下则大于铅基蜂鸣器的，且该蜂鸣器在-40~85℃的声学性能稳定。
蜂鸣器
铌酸钾钠基陶瓷
压电性能
lead-free piezoelectric ceramics
buzzer
potassium sodium niobate ceramics
piezoelectric property
Abstract
(Na0.52K0.44Li0.04)(Nb0.9Sb0.04Ta0.06)O3 piezoelectric ceramics with size of φ15 mm×0.1 mm was prepared by solid-state sintering method, and then the microstructure, electrical property and thermal depolarization property of the ceramics were studied. The ceramics were packaged into a buzzer and the acoustic property of the buzzer was measured and compared with that of the commercial lead-based one. The results show that the ceramics had the pure perovskite phase (tetragonal) structure. Below the Curie temperature (265℃), the piezoelectric constant were about 280 pC·N-1 and reached 89.2% that of the unheating ceramics, indicating the good temperature stability. The sound pressure level of the buzzer made of the ceramics was slightly lower under the conditon of (1-4) kHz/9 V while better under the condition of 2 kHz/3 V than that of the lead-based one. Moreover, the acoustic property of the ceramic buzzer kept stable at temperatures between -40℃ and 85℃.
中图分类号 TB34 DOI 10.11973/jxgccl201702011
所属栏目 新材料 新工艺
基金项目 国家自然科学基金资助项目（11304334）；上海市科委计划项目（14DZ2274100）
收稿日期 2016/6/1
修改稿日期 2016/12/16
网络出版日期
作者单位点击查看
备注韩雪飞(1992-),女,山东济宁人,硕士研究生。
引用该论文: HAN Xue-fei,ZOU Qi,ZENG Tao,YANG Xiao-bo,CAO Jian-wu. Preparation and Property of (Na0.52K0.44Li0.04)(Nb0.9Sb0.04Ta0.06)O3 Piezoelectric Ceramics and Ceramic Buzzer[J]. Materials for mechancial engineering, 2017, 41(2): 55～58
韩雪飞,邹祺,曾涛,杨晓波,曹剑武. (Na0.52K0.44Li0.04)(Nb0.9Sb0.04Ta0.06) O3压电陶瓷及蜂鸣器的制备与性能[J]. 机械工程材料, 2017, 41(2): 55～58
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