High-temperature oxidation behaviour of Si3N4 nanowires with different diameters

Zhao Shuang; Yang Feiyue; Chen Jun; Li Kunfeng; Fei Zhifang; Yang Zichun

doi:10.2298/PAC2301039Z

Processing and Application of Ceramics (Mar 2023)

High-temperature oxidation behaviour of Si3N4 nanowires with different diameters

Zhao Shuang,
Yang Feiyue,
Chen Jun,
Li Kunfeng,
Fei Zhifang,
Yang Zichun

Affiliations

Zhao Shuang: School of Power Engineering, Naval University of Engineering, Wuhan, China
Yang Feiyue: School of Power Engineering, Naval University of Engineering, Wuhan, China
Chen Jun: School of Power Engineering, Naval University of Engineering, Wuhan, China
Li Kunfeng: School of Power Engineering, Naval University of Engineering, Wuhan, China
Fei Zhifang: School of Power Engineering, Naval University of Engineering, Wuhan, China
Yang Zichun: School of Power Engineering, Naval University of Engineering, Wuhan, China

DOI: https://doi.org/10.2298/PAC2301039Z
Journal volume & issue: Vol. 17, no. 1
pp. 39 – 46

Abstract

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α-Si3N4 nanowires with diameters of 100-180 nm (Si3N4-W1) and 420-510 nm (Si3N4-W2) were synthesized by a modified chemical vapour deposition (CVD) method and their microstructure changes after high-temperature oxidation were studied. The results showed that both Si3N4 nanowires were not significantly oxidized when the temperature was lower than 900°C. However, the Si3N4-W1 microstructure began to change significantly after oxidation at 1200°C, while the Si3N4-W2 microstructure remained almost unchanged. Moreover, the Si3N4-W1 and Si3N4-W2 nanowires oxidized significantly after treatment at 1400°C, with weight gain of 26.4% and 13.7%, respectively.

Published in Processing and Application of Ceramics

ISSN: 1820-6131 (Print); 2406-1034 (Online)
Publisher: University of Novi Sad
Country of publisher: Serbia
LCC subjects: Technology: Chemical technology: Clay industries. Ceramics. Glass
Website: http://www.tf.uns.ac.rs/publikacije/PAC/index.html

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