Magnesia whiskers prepared by high-temperature solvent method

ISL OpenIR > 青海盐湖研究所知识仓储

	Magnesia whiskers prepared by high-temperature solvent method
	Nai Xue-Ying; Li Jie; Bian Shao-Ju; Li Wu
	2007-09-01
发表期刊	JOURNAL OF INORGANIC MATERIALS
ISSN	1000-324X
卷号	22 期号:5 页码:853-858
关键词	Mgo Whisker Intermediate Products Growth Mechanism
摘要	Magnesia whiskers with a diameter of 1-50 mu m and a length of 50-2000 mu m were synthesized via calcinations at different stages using MgCl2 center dot 6H(2)O as raw materials and KCl as flux. Through theoretical analysis of bischofite's pyrolysis and chemical analysis of intermediate products during different sintering stages, anhydrous magnesium chloride was presumed to be the precursor, which was confirmed by the preparation of MgO whisker from anhydrous magnesium chloride. Three factors that influence the whiskers morphology were also discussed including MgCl2, HCl and H2O. During the whisker's growth, heterogeneous nucleation of MgO occurs on the container-wall at initial stage, and then MgO whiskers are grown through VLS mechanism, finally dominated by VS mechanism. Magnesia whiskers with a diameter of 1-50 mu m and a length of 50-2000 mu m were synthesized via calcinations at different stages using MgCl2 center dot 6H(2)O as raw materials and KCl as flux. Through theoretical analysis of bischofite's pyrolysis and chemical analysis of intermediate products during different sintering stages, anhydrous magnesium chloride was presumed to be the precursor, which was confirmed by the preparation of MgO whisker from anhydrous magnesium chloride. Three factors that influence the whiskers morphology were also discussed including MgCl2, HCl and H2O. During the whisker's growth, heterogeneous nucleation of MgO occurs on the container-wall at initial stage, and then MgO whiskers are grown through VLS mechanism, finally dominated by VS mechanism.; Magnesia whiskers with a diameter of 1-50 mu m and a length of 50-2000 mu m were synthesized via calcinations at different stages using MgCl2 center dot 6H(2)O as raw materials and KCl as flux. Through theoretical analysis of bischofite's pyrolysis and chemical analysis of intermediate products during different sintering stages, anhydrous magnesium chloride was presumed to be the precursor, which was confirmed by the preparation of MgO whisker from anhydrous magnesium chloride. Three factors that influence the whiskers morphology were also discussed including MgCl2, HCl and H2O. During the whisker's growth, heterogeneous nucleation of MgO occurs on the container-wall at initial stage, and then MgO whiskers are grown through VLS mechanism, finally dominated by VS mechanism.
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/2283
专题	青海盐湖研究所知识仓储盐湖资源与化学实验室
作者单位	Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China
推荐引用方式 GB/T 7714	Nai Xue-Ying,Li Jie,Bian Shao-Ju,et al. Magnesia whiskers prepared by high-temperature solvent method[J]. JOURNAL OF INORGANIC MATERIALS,2007,22(5):853-858.
APA	Nai Xue-Ying,Li Jie,Bian Shao-Ju,&Li Wu.(2007).Magnesia whiskers prepared by high-temperature solvent method.JOURNAL OF INORGANIC MATERIALS,22(5),853-858.
MLA	Nai Xue-Ying,et al."Magnesia whiskers prepared by high-temperature solvent method".JOURNAL OF INORGANIC MATERIALS 22.5(2007):853-858.