Dielectric Property Investigation of AlN Ceramics Sintered with Different Additives

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題名:	Dielectric Property Investigation of AlN Ceramics Sintered with Different Additives
作者:	Wu, HM (Wu, Hue-Min)[ 1 ] Zheng, YL (Zheng, Yi-Lun)[ 2,3 ] Chen, GR (Chen, Ging-Ray)
貢獻者:	Dept Phys
關鍵詞:	Aluminum nitride sintering dielectric property sintering additives
日期:	2012
上傳時間:	2013-02-25 14:11:59 (UTC+8)
摘要:	Two kinds of liquid-phase sintering additives, La2O3 and Y2O3, were chosen to achieve the low-temperature sintering process. The relative density and shrinkage at sintering temperatures of 1300 degrees C, 1400 degrees C, and 1500 degrees C respectively were estimated. The observation of microstructures by XRD and SEM reveals that the inhomogeneous phases containing different phase compositions were formed during the sintering. The sintering additives are suggested to increase dielectric constant. However, the La2O3 additive shows no prominent effect on the dielectric loss. We suggest that the effect of aluminate second phase and the microimperfections could play an important role on the dielectric properties of sintered AlN ceramics during sintering below 1500 degrees C.
關聯:	FERROELECTRICS 卷: 435 頁數: 104-109
顯示於類別:	[光電物理系] 期刊論文

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