增材制造钛酸钡压电陶瓷的高温烧结与极化工艺研究

硅酸盐通报 ›› 2024, Vol. 43 ›› Issue (5): 1772-1783.

• “3D 打印无机非金属材料”专题(II) • 上一篇下一篇

增材制造钛酸钡压电陶瓷的高温烧结与极化工艺研究

刘凯^1,2, 鲁超², 贺俊超², 李天杨², 沈春华³, 闫春泽⁴, 史玉升⁴, 孙华君¹

1.武汉理工大学硅酸盐建筑材料国家重点实验室,武汉 430070;
2.武汉理工大学材料科学与工程学院,武汉 430070;
3.武汉理工大学材料分析与测试中心,武汉 430070;
4.华中科技大学材料成形与模具技术国家重点实验室,武汉 430074

收稿日期:2023-12-06 修订日期:2024-01-24 出版日期:2024-05-15 发布日期:2024-06-06
通信作者: 孙华君,博士,教授。E-mail:huajunsun@whut.edu.cn
作者简介:刘凯(1987—),男,博士,教授。主要从事陶瓷材料增材制造方面的研究。E-mail:victor_liu@whut.edu.cn
基金资助:
国家重点研发计划青年科学家项目(2021YFB3703100);国家自然科学基金(52202066);2023年湖北省重大攻关项目(JD)(2023BAA023);装备预研教育部联合基金(8091B032105)

High-Temperature Sintering and Polarization Process of Additive Manufacturing Barium Titanate Piezoelectric Ceramics

LIU Kai^1,2, LU Chao², HE Junchao², LI Tianyang², SHEN Chunhua³, YAN Chunze⁴, SHI Yusheng⁴, SUN Huajun¹

1. State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China;
2. School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China;
3. The Center for Materials Research and Analysis, Wuhan University of Technology, Wuhan 430070, China;
4. State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, China

Received:2023-12-06 Revised:2024-01-24 Online:2024-05-15 Published:2024-06-06

摘要/Abstract

摘要： 为提高增材制造BaTiO₃压电陶瓷的综合性能,本文研究了BaTiO₃压电陶瓷的浆料剪切变稀特性及数字光处理(DLP)成型特性,揭示了DLP成型BaTiO₃压电陶瓷坯体在不同烧结温度条件下的致密化机制,探索了极化方向对DLP成型BaTiO₃陶瓷压电性能的影响规律。结果表明,调节高温烧结与极化工艺,可以在一定程度上改善DLP增材制造BaTiO₃压电陶瓷的电学性能。当烧结温度为1 420 ℃、保温时间为2 h时,压电系数d₃₃最大,为163.4 pC/N,样品层间结合紧密,晶粒尺寸均匀。当Z轴与极化方向夹角由0°变为90°时,相对介电常数ε_r和d₃₃分别提高了29.37%和27.01%。当固含量为80%(质量分数)、烧结温度为1 420 ℃、Z轴与极化方向夹角为90°时,样品d₃₃最大,达到182.4 pC/N。

关键词: 压电陶瓷, 钛酸钡, 增材制造, 数字光处理, 烧结, 极化

Abstract: In order to improve the comprehensive performance of BaTiO₃ piezoelectric ceramics fabricated by additive manufacturing, the slurry shear thinning characteristics and digital light processing (DLP) forming characteristics of BaTiO₃ piezoelectric ceramics were studied in this paper. The densification mechanism of BaTiO₃ piezoelectric ceramics green body formed by DLP under different sintering temperature conditions was revealed, and the influence of polarization direction on the piezoelectric properties of BaTiO₃ ceramics formed by DLP was explored. The results show that the electrical properties of BaTiO₃ piezoelectric ceramics fabricated by DLP additive manufacturing can be improved to a certain extent by adjusting the high temperature sintering and polarization process. When the sintering temperature is 1 420 ℃ and the holding time is 2 h, the piezoelectric coefficient d₃₃ is the largest, which is 163.4 pC/N. The sample layers are tightly bonded and the grain size is uniform. When the angle between Z axis and polarization direction is changed from 0° to 90°, the relative dielectric constant ε_r and d₃₃ are increased by 29.37 % and 27.01 %, respectively. When the solid content is 80% (mass fraction), the sintering temperature is 1 420 ℃, and the angle between Z axis and polarization direction is 90°, the sample d₃₃ is the largest, reaching 182.4 pC/N.

Key words: piezoelectric ceramics, BaTiO₃, additive manufacturing, digital light processing, sintering, polarization

中图分类号:

TQ174

刘凯, 鲁超, 贺俊超, 李天杨, 沈春华, 闫春泽, 史玉升, 孙华君. 增材制造钛酸钡压电陶瓷的高温烧结与极化工艺研究[J]. 硅酸盐通报, 2024, 43(5): 1772-1783.

LIU Kai, LU Chao, HE Junchao, LI Tianyang, SHEN Chunhua, YAN Chunze, SHI Yusheng, SUN Huajun. High-Temperature Sintering and Polarization Process of Additive Manufacturing Barium Titanate Piezoelectric Ceramics[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(5): 1772-1783.

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增材制造钛酸钡压电陶瓷的高温烧结与极化工艺研究

High-Temperature Sintering and Polarization Process of Additive Manufacturing Barium Titanate Piezoelectric Ceramics

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