Electromechanical properties of paper-derived potassium sodium niobate piezoelectric ceramics

被引：7

作者：

Wahl, Larissa ^{[1
]}

Maier, Juliana Gabriele ^{[1
]}

Schmiedeke, Samuel ^{[1
]}

The-An Pham ^{[1
]}

Fey, Tobias ^{[1
,2
]}

Webber, Kyle Grant ^{[1
]}

Travitzky, Nahum ^{[1
]}

Khansur, Neamul Hayet ^{[1
]}

机构：

[1] Friedrich Alexander Univ Erlangen Nurnberg, Dept Mat Sci & Engn, Martensstr 5, D-91058 Erlangen, Germany

[2] Nagoya Inst Technol, Frontier Res Inst Mat Sci, Nagoya, Aichi, Japan

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2022年 / 105卷 / 11期

关键词：

KNN; lead-free ferroelectrics; paper-derived ceramics; piezoelectrics; GRAIN-SIZE; TEMPERATURE; ELECTROSTRICTION; PIEZOCERAMICS; TECHNOLOGIES;

D O I：

10.1111/jace.18655

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The small-signal dielectric and piezoelectric coefficients of paper-derived sodium potassium niobate, K0.5Na0.5NbO3 (KNN), were compared with those of conventionally prepared samples. Results show similar functional properties of paper-derived KNN without significantly decreasing the small-signal piezoelectric coefficient. The structure and microstructure analysis of conventional KNN and paper-derived KNN did not reveal any significant difference in the crystal structure and grain size. However, the temperature-dependent inter-ferroelectric phase transition temperature estimated from the temperature-dependent dielectric permittivity data revealed a decrease of approximately 18 degrees C for the paper-derived KNN and is possibly associated with the structural and microstructural defects. This work indicates that optimizing suspension chemistry and sintering conditions will be critical to enhance the functional response of paper-derived KNN further. Moreover, paper-derived ceramic processing, a novel and cost-effective additive manufacturing technology, can be potentially used to fabricate other electroceramics with a wide range of porosities and sizes as well as complex geometries and multilayer structures.

引用

页码：6755 / 6764

页数：10

共 39 条

[1] Mechanical retention - Influence of filler floc size and grammage of the fibre web [J].