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赵世娇,马景陶,赵兴宇,郝少昌,李自强,邓长生,刘兵.内凝胶工艺结合碳热氮化法制备ZrN纳米粉体[J].稀有金属材料与工程(英文),2020,49(2):732~736.[Zhao Shijiao,Ma Jingtao,Zhao Xingyu,Hao Shaochang,Li Ziqiang,Deng Changsheng and Liu Bing.Preparation of ZrN Nanopowders by Internal Gelation and Carbothermic Nitridation[J].Rare Metal Materials and Engineering,2020,49(2):732~736.]
Preparation of ZrN Nanopowders by Internal Gelation and Carbothermic Nitridation
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Received:March 12, 2019  Revised:April 22, 2019
DOI:
Key words: carbotheremic nitridation  internal gelation  ZrN  nanopowder  temperature  carbon
Foundation item:国家自然科学基金资助(项目号No. 51420105006)
Author NameAffiliation
Zhao Shijiao,Ma Jingtao,Zhao Xingyu,Hao Shaochang,Li Ziqiang,Deng Changsheng and Liu Bing  
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Abstract:
      Zirconium nitride (ZrN) nanopowders were prepared by carbothermic nitriding of precursor in flowing nitrogen. The precursor was mixture of zirconia gel and carbon black which was obtained by using internal gelation process. The heat treatment behavior of the precursor material, phase composition, morphology and microstructure of powder products were characterized by simultaneous thermogravimetric analysis and differential scanning calorimetric analysis (TGA/DSC), X-ray diffraction (XRD), scanning electron microscope (SEM) and transmission electron microscope (TEM). With increase in temperature, nitriding level increased. Pure ZrN phase was achieved at 1400°C and the particle size of the powder product was in nanometers. Carbon plays an important role of reductant in nitridation process and the carbon to zirconium mole ratio should be properly controlled to ~2 such that desired ZrN products could be prepared.