Investigation on preparing boron nitride by nitriding pure boron at 1200-1550 degrees C

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	Investigation on preparing boron nitride by nitriding pure boron at 1200-1550 degrees C
	Ye, Fang ; Zhang, Litong ; Liu, Yongsheng ; Li, Siwei ; Su, Meng ; Yin, Xiaowei ; Cheng, Laifei ; Li SW(李思维)
刊名	http://dx.doi.org/10.1016/j.pnsc.2012.09.001
	2012-10
关键词	CHEMICAL-VAPOR-DEPOSITION MECHANICAL-PROPERTIES CERAMIC COMPOSITES IN-SITU MICROSTRUCTURE COATINGS MIXTURE
英文摘要	Natural Science Foundation of China [51002120, 51032006, 51072169, 50820145202]; Programme of Introducing Talents of Discipline to Universities [B08040]; Research Fund of the State Key Laboratory of Solidification Processing (NWPU), China [45-QP-2010]; Boron nitride (BN) was prepared by nitriding pure boron (B) deposited on carbon substrates by chemical vapor deposition (CVD). Thermodynamic analysis of preparing BN by nitriding CVD B at 1200-1550 degrees C was firstly performed. And then, the effects of nitridation conditions, including temperature, nitridation atmosphere and CVD B microstructure, on the conversion of B to BN were analyzed by scanning electron microscopy (SEM), energy dispersion spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). Results show that the conversion degree of B to BN firstly increased and then slightly decreased with rising temperature. The nitridation degree was controlled by mutual actions between the nitridation of B and consumption of the effective nitrogen source (NH3). The morphology of products and the reaction mechanism between B and N were influenced by nitridation temperature. At high temperatures (1400-1500 degrees C), BN with highly ordered microstructure was produced. On using N-2-H-2 as nitridation atmosphere instead of NH3-H-2-N-2, no BN was obtained in the studied temperature range. The microstructure and component of BN obtained in nitridation process were little affected by the microstructure of CVD B. (c) 2012 Chinese Materials Research Society. Production and hosting by Elsevier Ltd. All rights reserved.
语种	英语
出版者	PROG NAT SCI-MATER
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/87189]
专题	材料学院－已发表论文
推荐引用方式 GB/T 7714	Ye, Fang,Zhang, Litong,Liu, Yongsheng,et al. Investigation on preparing boron nitride by nitriding pure boron at 1200-1550 degrees C[J]. http://dx.doi.org/10.1016/j.pnsc.2012.09.001,2012.
APA	Ye, Fang.,Zhang, Litong.,Liu, Yongsheng.,Li, Siwei.,Su, Meng.,...&李思维.(2012).Investigation on preparing boron nitride by nitriding pure boron at 1200-1550 degrees C.http://dx.doi.org/10.1016/j.pnsc.2012.09.001.
MLA	Ye, Fang,et al."Investigation on preparing boron nitride by nitriding pure boron at 1200-1550 degrees C".http://dx.doi.org/10.1016/j.pnsc.2012.09.001 (2012).