Low-Temperature Fabrication of Plate-like α-Al2O3 with Less NH4F Additive-Reference-Cited by-同舟云学术

Low-Temperature Fabrication of Plate-like α-Al2O3 with Less NH4F Additive

Published:2023-06-15 Issue:12 Volume:16 Page:4415
ISSN:1996-1944
Container-title:Materials
language:en
Short-container-title:Materials

Author:

Chen Haiyang¹,Li Bin¹^ORCID,Liu Meng¹,Yang Xue²,Liu Jie¹,Qin Tingwei¹,Xue Zejian¹,Xing Yun¹,Chen Junhong¹

Affiliation:

1. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

2. School of Civil and Engineering, Hebei University of Architecture, Zhangjiakou 075000, China

Abstract

Fluorinated compounds are effective mineralization agents for the fabrication of plate-like α-Al2O3. However, in the preparation of plate-like α-Al2O3, it is still an extremely challenging task to reduce the content of fluoride while ensuring a low synthesis temperature. Herein, oxalic acid and NH4F are proposed for the first time as additives in the preparation of plate-like α-Al2O3. The results showed that plate-like α-Al2O3 can be synthesized at a low temperature of 850 °C with the synergistic effect of oxalic acid and 1 wt.% NH4F. Additionally, the synergistic effect of oxalic acid and NH4F not only can reduce the conversion temperature of α-Al2O3 but also can change the phase transition sequence.

Funder

National Nature Science Foundation of China

Fundamental Research Funds for the Central Universities

Publisher

MDPI AG

Subject

General Materials Science

Link

https://www.mdpi.com/1996-1944/16/12/4415/pdf

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