Heat treatments for thermal sprayed lead-free piezoelectric ceramic coatings

Haojie Yue; Kailing Fang; Zhichao Gong; Kun Guo; Shifeng Guo; Hongfei Liu; Kui Yao; Francis Eng Hock Tay

Journal of Materials Research and Technology (Nov 2023)

Heat treatments for thermal sprayed lead-free piezoelectric ceramic coatings

Haojie Yue,
Kailing Fang,
Zhichao Gong,
Kun Guo,
Shifeng Guo,
Hongfei Liu,
Kui Yao,
Francis Eng Hock Tay

Affiliations

Haojie Yue: School of Materials Science and Engineering, Nanchang Hangkong University, 696 Fenghe South Avenue, Nanchang, 330063, PR China
Kailing Fang: School of Materials Science and Engineering, Nanchang Hangkong University, 696 Fenghe South Avenue, Nanchang, 330063, PR China
Zhichao Gong: School of Materials Science and Engineering, Nanchang Hangkong University, 696 Fenghe South Avenue, Nanchang, 330063, PR China
Kun Guo: School of Materials Science and Engineering, Nanchang Hangkong University, 696 Fenghe South Avenue, Nanchang, 330063, PR China; Corresponding author.
Shifeng Guo: Shenzhen Key Laboratory of Smart Sensing and Intelligent Systems, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, 1068 Xueyuan Avenue, Shenzhen University Town, Shenzhen, 518055, PR China
Hongfei Liu: Institute of Materials Research and Engineering(IMRE), A∗STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, 138634, Singapore
Kui Yao: Institute of Materials Research and Engineering(IMRE), A∗STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, 138634, Singapore; Corresponding author.
Francis Eng Hock Tay: Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, 117575, Singapore

Journal volume & issue: Vol. 27
pp. 2080 – 2088

Abstract

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[0.94(Bi0.5Na0.5)TiO3-0.06BaTiO3]0.98-(LiNbO3)0.02 (BNBTLN) piezoelectric ceramic coating was fabricated by thermal spray process on stainless steel substrates with thermal barrier coating (TBC) as an intermediary layer. The morphology, structure, and electrical properties of the thermal-sprayed BNBTLN coatings after furnace heat treatment (F-HT) and plasma torch heat treatment (P-HT) were studied, respectively. The BNBTLN coatings after F-HT and P-HT both had the coexisting rhombohedral and tetragonal perovskite phases and exhibited excellent electrical properties, with an effective piezoelectric coefficient d33 of 68 p.m./V and 40 p.m./V, respectively. These results reveal that high quality piezoelectric coatings can be achieved by the P-HT method, which is promising for scaling up the fabrication of piezoelectric ceramic coatings.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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