Study of Surfacial Structure of Nano Si3N4 by Fourier Infrared Diffusion Reflection Spectra

doi:10.3866/PKU.WHXB19951005

IMR OpenIR

	Study of Surfacial Structure of Nano Si3N4 by Fourier Infrared Diffusion Reflection Spectra
	Li Yali 1; Gao Yang 2; Liang Yong 2; Zheng Fen 2; Xiao Kesheng 2; Hu Zhuangqi 1
通讯作者	Li Yali()
	1995
发表期刊	ACTA PHYSICO-CHIMICA SINICA
ISSN	1000-6818
卷号	11 期号:10 页码:881-889
摘要	The surface structure, ambient oxidation and thermal stability of the laser synthesized Si3N4 nano powders (15-30nm) with different compositions have been studied by Difusion Reflectin Infrared Fourier Transform (DRIFT) spectra. Results show that the nitrogen rich powders with a freshed surface have silazane structure (Si3-xNHx, x=1-3) and this silazane group reacts with water in the air to form silanol group (Si-OH) The amount of the silazane groups increases with the increase of the nitrogen content in the powders. The silicon rich powders have little silazane on powder surface and the oxidation of the powders occurs by the formation of Si-O bonds from the reaction between the surface Si atoms and the oxygen in the air. The silazane groups and the silanol groups are eliminated from the particle surface upon a vaccum annealing at temperature higher than 600 and 1500 degrees C, respectively.
关键词	Infrared spectra Si3N4 Surface
DOI	10.3866/PKU.WHXB19951005
收录类别	SCI
语种	英语
WOS研究方向	Chemistry
WOS类目	Chemistry, Physical
WOS记录号	WOS:000207590900005
出版者	PEKING UNIV PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/80710
专题	中国科学院金属研究所
通讯作者	Li Yali
作者单位	1.Chinese Acad Sci, Micro Crystalline & Laser Proc Dept, State Key Lab Rapidly Solidified Nonequilibrium A, Shenyang 110015, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110015, Peoples R China
推荐引用方式 GB/T 7714	Li Yali,Gao Yang,Liang Yong,et al. Study of Surfacial Structure of Nano Si3N4 by Fourier Infrared Diffusion Reflection Spectra[J]. ACTA PHYSICO-CHIMICA SINICA,1995,11(10):881-889.
APA	Li Yali,Gao Yang,Liang Yong,Zheng Fen,Xiao Kesheng,&Hu Zhuangqi.(1995).Study of Surfacial Structure of Nano Si3N4 by Fourier Infrared Diffusion Reflection Spectra.ACTA PHYSICO-CHIMICA SINICA,11(10),881-889.
MLA	Li Yali,et al."Study of Surfacial Structure of Nano Si3N4 by Fourier Infrared Diffusion Reflection Spectra".ACTA PHYSICO-CHIMICA SINICA 11.10(1995):881-889.