Low-temperature synthesis and sintering of gamma-Y2Si2O7

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	Low-temperature synthesis and sintering of gamma-Y2Si2O7
	Z. Q. Sun; Y. C. Zhou; M. S. Li
	2006
发表期刊	Journal of Materials Research
ISSN	0884-2914
卷号	21 期号:6 页码:1443-1450
摘要	In this article, a novel pressureless solid-liquid reaction method is presented for preparation of yttrium disilicate (gamma-Y2Si2O7). Single-phase gamma-Y2Si2O7 powder was synthesized by calcination of SiO2 and Y2O3 powders with the addition of LiYO2 at 1400 degrees C for 4 h. The addition of LiYO2 significantly decreased the synthesis temperature, shortened the calcination time, and enhanced the stability of gamma-Y2Si2O7. The sintering of these powders in air and O-2 was studied by means of thermal mechanical analyzer. It is shown that the gamma-Y2Si2O7 sintered in oxygen had a faster densification rate and a higher density than that sintered in air. Furthermore, single-phase gamma-Y2Si2O7 with a density of 4.0 g/cm(3) (99% of the theoretical density) was obtained by pressureless sintering at 1400 degrees C for 2 h in oxygen. Microstructures of the sintered samples are studied by scanning electron microscope.
部门归属	chinese acad sci, high performance ceram div, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. chinese acad sci, grad sch, beijing 100039, peoples r china.;zhou, yc (reprint author), chinese acad sci, high performance ceram div, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china;yczhou@imr.ac.cn
关键词	Yttrium Disilicate Powder Pressed Silicon-nitride Gel Method Behavior Crystallization Microstructure Densification Stability Evolution Ceramics
URL	查看原文
WOS记录号	WOS:000238191300013
引用统计	被引频次：65[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/34479
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. Q. Sun,Y. C. Zhou,M. S. Li. Low-temperature synthesis and sintering of gamma-Y2Si2O7[J]. Journal of Materials Research,2006,21(6):1443-1450.
APA	Z. Q. Sun,Y. C. Zhou,&M. S. Li.(2006).Low-temperature synthesis and sintering of gamma-Y2Si2O7.Journal of Materials Research,21(6),1443-1450.
MLA	Z. Q. Sun,et al."Low-temperature synthesis and sintering of gamma-Y2Si2O7".Journal of Materials Research 21.6(2006):1443-1450.