Light extinction by pores in AlON ceramics: the transmission properties

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	Light extinction by pores in AlON ceramics: the transmission properties
	Y. Z. Wang ; T. C. Lu ; L. Gong ; J. Q. Qi ; J. S. Wen ; J. A. Yu ; L. Pan ; Y. Yu ; N. A. Wei
刊名	Journal of Physics D-Applied Physics
	2010
卷号	43 期号:27
关键词	polycrystalline materials mie-scattering grain-growth nd-yag transparent alumina spinel al2o3
ISSN号	0022-3727
中文摘要	The transmission properties of aluminium oxynitride (AlON) ceramics were studied. AlON samples with different transmittances were prepared. SEM detected two types of pores with a different range of diameters in the samples; the porosity was obtained by counting the number of pores in a certain area. Mie theory was applied to illuminate the effects of pores on the transmittances. The calculated transmittances were compared with the experiments. The existence of pores with sizes in the 1.1-1.6 mu m range and porosities above 10(-4) accounted for the degradation of the transmittance spectra at 2.5 mu m. Discrepancies of the spectra between the samples were caused mainly by different densities of the A-type pores with sizes above 1 mu m. The concepts of critical size and critical concentration were proposed and were quantitatively characterized by critical curves, which divided the regions of translucency and transparency into three parts: R(1), R(2) and R(3) depending on porosity. New approaches on how to control the pore sizes and porosities quantitatively for transparent ceramics design were presented.
原文出处	://WOS:000279003700018
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/31552]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Z. Wang,T. C. Lu,L. Gong,et al. Light extinction by pores in AlON ceramics: the transmission properties[J]. Journal of Physics D-Applied Physics,2010,43(27).
APA	Y. Z. Wang.,T. C. Lu.,L. Gong.,J. Q. Qi.,J. S. Wen.,...&N. A. Wei.(2010).Light extinction by pores in AlON ceramics: the transmission properties.Journal of Physics D-Applied Physics,43(27).
MLA	Y. Z. Wang,et al."Light extinction by pores in AlON ceramics: the transmission properties".Journal of Physics D-Applied Physics 43.27(2010).