In Situ Observation of the Microstructure-evolution in Silicon Nitride Ceramics Sintering by Synchrotron Radiation X-ray Computed Tomography

	In Situ Observation of the Microstructure-evolution in Silicon Nitride Ceramics Sintering by Synchrotron Radiation X-ray Computed Tomography
	Xu, F; Hu, XF; Zhao, JH; Yuan, QX; Yuan QX(袁清习)
刊名	ACTA CHIMICA SINICA
	2009
卷号	67 期号:11 页码:1205-1210
关键词	analysis and testing technology of materials sintering synchrotron radiation X-ray computed tomography silicon nitride ceramic microstructure evolution
通讯作者	[Xu Feng ; Hu Xiaofang ; Zhao Jianhua] Univ Sci & Technol China, Chinese Acad Sci, Key Lab Mech Behav & Design Mat, Hefei 230026, Peoples R China ; [Yuan Qingxi] Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China
英文摘要	Microstructure-evolution of the silicon nitride ceramics sample during sintering process was investigated by a synchrotron radiation X-ray computed tomography (SR-CT) technique. The projection images of the sample were obtained during the sintering process in real-time. 2-D and 3-D reconstructed images were obtained by treating the projection images of different sintering periods with filter back projection arithmetic and digital image processing methods. From the reconstructed images, three sintering stages of the silicon nitride ceramic sample were clearly distinguished and several sintering phenomena during the sintering process such as grain contact, sintering neck growth and pore spheroidization were observed. Densification rate of sintering process was analyzed from the porosity-time logarithm curve, which was obtained from the reconstructed images of silicon nitride ceramic sample at different sintering time. The three sintering stages and linear relationship between porosity and time logarithm in the middle stage of sintering which has already been described in the traditional sintering theories were clearly observed from the porosity-time logarithm curve. The experiment results are in concordance with the sintering theory and provide effective experimental data for further analysis of the sintering process and the mechanical characteristics of ceramics.
学科主题	Chemistry
类目[WOS]	Chemistry, Multidisciplinary
研究领域[WOS]	Chemistry
原文出处	SCI
语种	英语
WOS记录号	WOS:000267606400009
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/239176]
专题	高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Xu, F,Hu, XF,Zhao, JH,et al. In Situ Observation of the Microstructure-evolution in Silicon Nitride Ceramics Sintering by Synchrotron Radiation X-ray Computed Tomography[J]. ACTA CHIMICA SINICA,2009,67(11):1205-1210.
APA	Xu, F,Hu, XF,Zhao, JH,Yuan, QX,&袁清习.(2009).In Situ Observation of the Microstructure-evolution in Silicon Nitride Ceramics Sintering by Synchrotron Radiation X-ray Computed Tomography.ACTA CHIMICA SINICA,67(11),1205-1210.
MLA	Xu, F,et al."In Situ Observation of the Microstructure-evolution in Silicon Nitride Ceramics Sintering by Synchrotron Radiation X-ray Computed Tomography".ACTA CHIMICA SINICA 67.11(2009):1205-1210.