Details

Autor(en) / Beteiligte

• Chen, Haiyang
• Li, Bin
• Liu, Meng
• Yang, Xue
• Liu, Jie
• Qin, Tingwei
• Xue, Zejian
• Xing, Yun
• Chen, Junhong

Titel

Low-Temperature Fabrication of Plate-like α-Al[sub.2]O[sub.3] with Less NH[sub.4]F Additive

Ist Teil von

• Materials, 2023-06, Vol.16 (12)

Ort / Verlag

MDPI AG

Erscheinungsjahr

2023

Quelle

Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals

Beschreibungen/Notizen

• Fluorinated compounds are effective mineralization agents for the fabrication of plate-like α-Al[sub.2]O[sub.3]. However, in the preparation of plate-like α-Al[sub.2]O[sub.3], it is still an extremely challenging task to reduce the content of fluoride while ensuring a low synthesis temperature. Herein, oxalic acid and NH[sub.4]F are proposed for the first time as additives in the preparation of plate-like α-Al[sub.2]O[sub.3]. The results showed that plate-like α-Al[sub.2]O[sub.3] can be synthesized at a low temperature of 850 °C with the synergistic effect of oxalic acid and 1 wt.% NH[sub.4]F. Additionally, the synergistic effect of oxalic acid and NH[sub.4]F not only can reduce the conversion temperature of α-Al[sub.2]O[sub.3] but also can change the phase transition sequence.