High sintering activity NaNbO3 powder synthesis via the polyacrylamide gel method and fabrication of a NaNbO3 ceramic at lower temperature

Fen Ye; Xiangping Jiang; Xiaokun Huang; Xin Nie; Chao Chen; Hao Cheng; Renfen Zeng

Journal of Materials Research and Technology (Nov 2021)

High sintering activity NaNbO3 powder synthesis via the polyacrylamide gel method and fabrication of a NaNbO3 ceramic at lower temperature

Fen Ye,
Xiangping Jiang,
Xiaokun Huang,
Xin Nie,
Chao Chen,
Hao Cheng,
Renfen Zeng

Affiliations

Fen Ye: Jiangxi Key Laboratory of Advanced Ceramic Materials, Department of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333001, Jiangxi, China; College of Material and Chemical Engineering, Tongren University, Tongren 554300, PR China
Xiangping Jiang: Jiangxi Key Laboratory of Advanced Ceramic Materials, Department of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333001, Jiangxi, China; Corresponding author.
Xiaokun Huang: Jiangxi Key Laboratory of Advanced Ceramic Materials, Department of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333001, Jiangxi, China
Xin Nie: Jiangxi Key Laboratory of Advanced Ceramic Materials, Department of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333001, Jiangxi, China
Chao Chen: Jiangxi Key Laboratory of Advanced Ceramic Materials, Department of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333001, Jiangxi, China
Hao Cheng: College of Material and Chemical Engineering, Tongren University, Tongren 554300, PR China; Corresponding author.
Renfen Zeng: Jiangxi Key Laboratory of Advanced Ceramic Materials, Department of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333001, Jiangxi, China

Journal volume & issue: Vol. 15
pp. 5833 – 5840

Abstract

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NaNbO3 powder was synthesized via the polyacrylamide gel method, growth behaviors and associated morphology were discussed. The calcined NaNbO3 powder at 565 °C possess cubic and long columnar morphology which are NaNbO3 and Na/Nb/F or Na/Nb/F/O compounds, respectively. According to XRD and SEM, as calcined temperature raised, the amount of F in Na/Nb/F or Na/Nb/F/O compounds gradually reduced, long columnar compounds resolved into cubic NaNbO3. These changes made the NaNbO3 powder which calcined at 565 °C obtain highly sintering activity, dense NaNbO3 ceramic can sintering at 1200 °C. NaNbO3 ceramic densification was caused by the large ionic radius O2− replaced the small ionic radius F− during the calcining process. Compared with the solid–state reaction method, the sintering temperature of NaNbO3 ceramic was be reduced in this work, which contribute for low-temperature sintering technical of NaNbO3 ceramics.

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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