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Integrated Ferroelectrics
An International Journal
Volume 232, 2023 - Issue 1
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Research Article

Effect of Heat Treatment Temperature on Structural and Electrical Properties of Plasma Sprayed KNMN Coatings

Xuewu Lia School of Mechanical Engineering, Xi’an University of Science and Technology, Xi’an, ChinaView further author information
,
Rui Gaoa School of Mechanical Engineering, Xi’an University of Science and Technology, Xi’an, China;b National Key Lab for Remanufacturing, Army Academy of Armored ForcesBeijing, ChinaView further author information
,
Yanfei Huangb National Key Lab for Remanufacturing, Army Academy of Armored ForcesBeijing, ChinaView further author information
,
Weiling Guob National Key Lab for Remanufacturing, Army Academy of Armored ForcesBeijing, ChinaView further author information
,
Wuping Wangc Army Academy of Armored Forces, Beijing, ChinaView further author information
,
Keren Xud Capital Aerospace Machinery Corporation Limited, Beijing, ChinaView further author information
,
Zhiguo Xingb National Key Lab for Remanufacturing, Army Academy of Armored ForcesBeijing, ChinaCorrespondence[email protected]
View further author information
&
Haidou Wange National Engineering Research Center for Remanufacturing, Army Academy of Armored Forces, Beijing, ChinaView further author information
 show all
Pages 114-126 | Received 08 Nov 2022, Accepted 11 Jan 2023, Published online: 07 Mar 2023
 
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Abstract

In this work, Mn-doped KNN (KNMN) piezoelectric ceramic coatings were prepared by plasma spraying technique, and the effects of post-treatment temperature on the microstructure and electrical properties of KNMN coatings were investigated. The results showed that the microstructure of the KNMN coating was more dense and homogeneous at the heat treatment temperature of 600 °C. The electrical properties of the coating were the best, with the dielectric constant and dielectric loss stabilized at 1580 and 0.01, and the residual polarization strength and coercivity field of the coating were 17.98 μC/cm2 and 86.78 kV/cm2, respectively.

Additional information

Funding

The paper was financially supported by the National Natural Science Foundation of China (Grant Nos. 52275227 and 52275211) and Key basic research project of the Foundation Strengthening Plan (Grant No. 2019-JCJQ-JJ-034) and Innovation Capability Support Program of Shaanxi (No. 2021KJXX-38).

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