Potassium sodium niobate (KNN)-based lead-free piezoelectric ceramic coatings on steel structure by thermal spray method

被引：25

作者：

Chen, Shuting ^{[1
]}

Tan, Chee Kiang Ivan ^{[1
]}

Tan, Sze Yu ^{[1
]}

Guo, Shifeng ^{[1
]}

Zhang, Lei ^{[1
]}

Yao, Kui ^{[1
]}

机构：

[1] ASTAR, Inst Mat Res & Engn, Singapore, Singapore

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2018年 / 101卷 / 12期

关键词：

coatings; electroceramics; lead-free ceramics; piezoelectric materials; properties; THIN-FILMS; BARRIER COATINGS; FABRICATION; PIEZOCERAMICS; SENSORS;

D O I：

10.1111/jace.15820

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：

For the first time, potassium sodium niobate (KNN)-based lead-free piezoelectric ceramic coating with strong piezoelectric response was fabricated on stainless steel substrates by thermal spray process, after introducing NiCrAlY and yttria-stabilized zirconia (YSZ) intermediate layers. A large effective piezoelectric coefficient (d(33)) of 125 pm/V was obtained with the thermal-sprayed KNN-based ceramic coating on the steel substrates. The mechanisms of improving the structure and enhancing the properties of the KNN-based piezoelectric ceramic coatings by introducing the intermediate layers were analyzed. Ultrasonic transducers were designed and fabricated from the KNN-based coatings directly formed on a steel plate structure, and the feasibility for generation and detection of ultrasonic waves for structural health monitoring using the thermal-sprayed lead-free piezoelectric ceramic coating was demonstrated.

引用

页码：5524 / 5533

页数：10

共 41 条

[1] Spinel humidity sensors prepared by thermal spray direct writing [J].