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Influence of Ta Doping Elements and Sintering Atmosphere on Microstructure and Electrical Properties for KNN-based Lead-free Piezoelectric Ceramics
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Limin HOU, Xinjian WANG, Zhenxing WANG, Yu HUAN
Journal of the Chinese Ceramic Society | 2022, 50(3) : 682 - 690
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Journal of the Chinese Ceramic Society | 2022, 50(3): 682-690
• Research Articles •
Influence of Ta Doping Elements and Sintering Atmosphere on Microstructure and Electrical Properties for KNN-based Lead-free Piezoelectric Ceramics
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Limin HOU, Xinjian WANG, Zhenxing WANG, Yu HUAN
Affiliations
  • School of Materials Science and Engineering, University of Jinan, Jinan 25022, China

    • HOU Limin (1998-), female, Master candidate. E-mail:

About Author:

HOU Limin (1998-), female, Master candidate. E-mail:

Published: 2022-03-20 doi: 10.14062/j.issn.0454-5648.20210552
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The ceramics of 0.96K0.48Na0.52Nb(1-x)TaxO3 0.04BaZrO3 0.3%MnCO3 were prepared via solid-state reaction and subsequent sintering in air and reducing atmospheres. The effects of Ta doping and sintering atmosphere on the microstructure and piezoelectric properties of ceramics were investigated. The results demonstrate that all the ceramics sintered in different atmospheres exhibit a pure perovskite structure. The phase structure of KNN-based ceramics is the coexistence of rhombohedral and orthorhombic phases. Also, the generation of oxygen vacancies is suppressed as Ta doping content is increased. When x = 0.1, the ceramics sintered in a reducing atmosphere exhibit the optimum electrical properties (i.e., d33=172 pC/N, , kp=24.9, , and tanδ=0.021), which are superior to the counterparts sintered in air atmosphere (i.e., d33=142 pC/N, pm/V, kp=21.1, , and tanδ=0.022). It is indicated that sintering in a reducing atmosphere can suppress the grain growth, thus facilitating the densification of ceramics and improving the piezoelectric properties.

potassium sodium niobate-based lead-free piezoelectric ceramics  /  tantalum-doped  /  microstructure  /  reducing sintering atmosphere
侯立敏, 王新健, 王振行, 郇宇. Ta掺杂和烧结气氛对KNN基无铅压电陶瓷的微观结构和压电性能的影响. 硅酸盐学报, 2022 , 50 (3) : 682 -690 . DOI: 10.14062/j.issn.0454-5648.20210552
Limin HOU, Xinjian WANG, Zhenxing WANG, Yu HUAN. Influence of Ta Doping Elements and Sintering Atmosphere on Microstructure and Electrical Properties for KNN-based Lead-free Piezoelectric Ceramics[J]. Journal of the Chinese Ceramic Society, 2022 , 50 (3) : 682 -690 . DOI: 10.14062/j.issn.0454-5648.20210552
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Year 2022 volume 50 Issue 3
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Article Info
doi: 10.14062/j.issn.0454-5648.20210552
  • Receive Date：2021-07-07
  • Online Date：2026-10-22
  • Published：2022-03-20
Article Data
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History
  • Received：2021-07-07
  • Revised：2021-09-26
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Affiliations
    School of Materials Science and Engineering, University of Jinan, Jinan 25022, China

Corresponding:

HUAN Yu (1990-), female, Ph.D., Associate Professor. E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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