Changes of nitrides characteristics in Li-N system synthesized at different pressures
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- 作者：Oleg V. Ignatenko ; Valery A. Komar ; Sergey V. Leonchik ; Natalia A. Shempel ; Antoaneta Ene ; Alina Cantaragiu ; Marina V. Frontasyeva ; Valery N. Shvetsov
- 关键词：Lithium nitride ; High resolution electron microscopy ; Grain boundaries ; Phase transition
- 刊名：Journal of Alloys and Compounds
- 出版年：2013
- 出版时间：25 December, 2013
- 年：2013
- 卷：581
- 期：Complete
- 页码：23-27
- 全文大小：1593 K
文摘
For the Li-N system samples were obtained at pressures of nitrogen from 1 to 10 atm. Energy-dispersive X-ray (EDX) spectrum of a sample of Li-N subjected to degradation shows that lithium nitride turned into carbonate as evidenced by the predominant content of carbon and oxygen. Upon synthesis of lithium nitride at a positive pressure of nitrogen, the ¦Â-modification is formed, which can be achieved at a pressure 500 times lower than that described in literature, required to create a high-pressure phase. The increase in carbon content with increasing of synthesis pressure of lithium nitride confirms the change in stoichiometry of its structure formed with high nitrogen content.