人工晶体学报 ›› 2025, Vol. 54 ›› Issue (6): 1061-1067.DOI: 10.16553/j.cnki.issn1000-985x.2024.0258
收稿日期:
2024-10-27
出版日期:
2025-06-20
发布日期:
2025-06-23
作者简介:
张飞洋(1992—),女,天津市人,硕士,工程师。E-mail:zhangfeiyang2014@163.com
ZHANG Feiyang(), YAN Feng, LOU Yue, LI Bojiang, LI Jie
Received:
2024-10-27
Online:
2025-06-20
Published:
2025-06-23
摘要: 使用传统固相反应法制备了Na0.5Bi4.5Ti4-x Co x O15(x=0、0.025、0.050、0.075)铋层状无铅压电陶瓷。采用XRD、SEM、EDS、XPS及相关电学参数测试系统表征了样品的晶体结构、断面形貌、氧空位情况及介电、压电、铁电等性能,探究不同Co掺杂含量对陶瓷性能的影响。结果表明:当掺杂含量x=0.050时,样品的物相组成单一均匀,晶粒呈现片层状,相对密度较高,压电常数可达34.7 pC/N,介电损耗仅为0.30%,居里温度为672 ℃,500 ℃时高温电阻率为1.62×107 Ω·cm,并且具有很好的温度稳定性,说明掺杂改性后的Na0.5Bi4.5Ti3.95Co0.05O15陶瓷在高温高频领域具有潜在的市场应用价值。
中图分类号:
张飞洋, 闫锋, 娄岳, 李波江, 李杰. Co掺杂Na0.5Bi4.5Ti4O15铋层状无铅压电陶瓷制备及电学性能研究[J]. 人工晶体学报, 2025, 54(6): 1061-1067.
ZHANG Feiyang, YAN Feng, LOU Yue, LI Bojiang, LI Jie. Preparation and Electrical Properties of Co Doped Na0.5Bi4.5Ti4O15 Bismuth-Layered Lead-Free Piezoelectric Ceramics[J]. Journal of Synthetic Crystals, 2025, 54(6): 1061-1067.
图2 不同Co掺杂含量下NBT陶瓷的断面SEM照片(a)~(d)与(c)中A区域的EDS图谱(e)。(a)x=0;(b)x=0.025;(c)x=0.050;(d)x=0.075
Fig.2 Fracture surfaces SEM images of NBT ceramics doped with different Co content (a)~(d) and EDS spectrum (e) of area A in Fig.(c). (a) x=0; (b) x=0.025; (c) x=0.050; (d) x=0.075
Sample | ρd/(g·cm-3) | ρrd/% | εr | tan δ/% | d33/(pC·N-1) | kp/% |
---|---|---|---|---|---|---|
NBT | 6.48 | 84.9 | 138 | 0.68 | 17.5 | 3.9 |
NBT-0.025 | 6.72 | 88.1 | 140 | 0.45 | 28.1 | 4.8 |
NBT-0.050 | 7.13 | 93.4 | 146 | 0.30 | 34.7 | 5.4 |
NBT-0.075 | 6.98 | 91.5 | 150 | 0.54 | 27.7 | 5.0 |
表1 不同Co掺杂含量下NBT陶瓷的室温介电和压电等物理性能
Table 1 Physical properties such as dielectric and piezoelectric properties of NBT ceramics doped with different Co content at room temperature
Sample | ρd/(g·cm-3) | ρrd/% | εr | tan δ/% | d33/(pC·N-1) | kp/% |
---|---|---|---|---|---|---|
NBT | 6.48 | 84.9 | 138 | 0.68 | 17.5 | 3.9 |
NBT-0.025 | 6.72 | 88.1 | 140 | 0.45 | 28.1 | 4.8 |
NBT-0.050 | 7.13 | 93.4 | 146 | 0.30 | 34.7 | 5.4 |
NBT-0.075 | 6.98 | 91.5 | 150 | 0.54 | 27.7 | 5.0 |
图3 不同Co掺杂含量下NBT陶瓷的介电温谱。(a)相对介电常数;(b)介电损耗
Fig.3 Dielectric permittivity of NBT ceramics doped with different Co content. (a) Relative dielectric constant; (b) dielectric loss
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