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A novel and simple method for large-scale synthesis of nanosized NbC powder by disproportionation reaction in molten salt
Yang, Ling Xu; Zhang, Hai Liang; Wang, Ying; Liu, Hui Jun; Zeng, Chao Liu
2019-02-15
Source PublicationCERAMICS INTERNATIONAL
ISSN0272-8842
Volume45Issue:3Pages:3791-3796
AbstractNanosized niobium carbide (NbC) powder was successfully synthesized by disproportionation reaction of Nb(IV) species in NaCl-KCl molten salt at 800-900 degrees C for 0.5-5 h by using a mixture of Nb, NbCl5, and acetylene black as raw materials. Effects of molar ratio of NbCl5/Nb, temperature, and reaction time on NbC preparation were also investigated. The composition and microstructure of the product were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and high resolution transmission electron microscopy (HRTEM). Homogenous NbC powder with a particle size of similar to 50 nm is in-situ synthesized on template of acetylene black by disproportionation reaction of Nb(IV) species in NaCl-KCl molten salt. In addition, NbC formation is dramatically influenced by molar ratio of NbCl5/Nb and temperature, a higher temperature and higher molar ratio of NbCl5/Nb are more preferable for nanosized NbC powder formation.
KeywordNiobium carbide Nanoparticle Molten salt NbCl5 Disproportionation reaction
Indexed BySCI
Language英语
WOS IDWOS:000456225900109
PublisherELSEVIER SCI LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81368
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Yang, Ling Xu,Zhang, Hai Liang,Wang, Ying,et al. A novel and simple method for large-scale synthesis of nanosized NbC powder by disproportionation reaction in molten salt[J]. CERAMICS INTERNATIONAL,2019,45(3):3791-3796.
APA Yang, Ling Xu,Zhang, Hai Liang,Wang, Ying,Liu, Hui Jun,&Zeng, Chao Liu.(2019).A novel and simple method for large-scale synthesis of nanosized NbC powder by disproportionation reaction in molten salt.CERAMICS INTERNATIONAL,45(3),3791-3796.
MLA Yang, Ling Xu,et al."A novel and simple method for large-scale synthesis of nanosized NbC powder by disproportionation reaction in molten salt".CERAMICS INTERNATIONAL 45.3(2019):3791-3796.
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