Effect of NaN₃ Addition Content on NaCl-NaF Medium Nitridation Synthesis β-Sialon Powders

Abstract:

β-Sialon powders were synthesized via salt-assisted nitridation synthesis from Al, Si, SiO₂ powders and molten salt medium (NaCl and NaF) with the addition of different content of NaN₃ at different temperature for 3 h. NaN₃ were employed as auxiliary nitrogen source which effectively provide sufficient nitrogen. The results indicated that the growth of β-Sialon powders had better effect when the NaN₃ was added. And the β-Sialon powders grew more completely and the morphology of β-Sialon powders showed the rod-like crystal with hexagonal smooth tips instead of conical tips. In addition, the products displayed different sizes when the content of NaN₃ was changed. These results of this work suggested that β-Sialon could be synthesized with specific morphology by adding different content of NaN₃.

• Periodical: Key Engineering Materials (Volume 768)
• Pages: 146-151
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.768.146
• Online since: April 2018
• Authors: Zheng Long Liu, Jun Ding, Chao Yu, Hong Xi Zhu, Cheng Ji Deng*, Jian Peng Liu, Guo Dong Fan, Guang Hui Leng
• Keywords: Morphology, Nitridation, Salt-Assisted, Synthesis, Β-Sialon

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