标题:Influence Of Yb2O3 and Y2O3 on the mechanical properties of porous Si3N4 ceramics
作者:Cheng, Chuan Bing ;Fan, Run Hua ;Liu, Fu Tian ;Wang, Chong Hai ;Wang, Hong Sheng ;Zhou, Chang Ling
通讯作者:Liu, Fu Tian
作者机构:[Cheng, Chuan Bing ;Liu, Fu Tian ] School of Materials Science and Engineering, The University of Jinan, 336 Nanxinzhuang west road, Jinan; 250022, Ch 更多
会议名称:Chinese Materials Congress, CMC 2014
会议日期:4 July 2014 through 7 July 2014
来源:Materials Science Forum
出版年:2015
卷:816
页码:91-95
DOI:10.4028/www.scientific.net/MSF.816.91
关键词:Porous Si3N4 ceramics; Ytterbia; Yttria
摘要:Using Yb2O3 or Y2O3 as s single sintering additive, the porous Si3N4 ceramics with excellent mechanical properties were successfully fabricated by pressureless sintering. The influence of Y2O3 and Yb2O3 on the microstructure and mechanical properties of porous Si3N4 ceramics was investigated. The results show that both sintering additives can effectively promote α to β phase transformation, and microstructures with elongated β-Si3N4 grains interlocking and superimposing on each other can be obtained. However, sinterability, phase transformation and mechanical properties of the porous Si3N4 ceramics with Yb2O3 were more excellent than the ceramics with Y2O3. The specimens with Yb2O3 had high aspect ratio β-Si3N4 grains, and formed the high melting crystalline Yb4Si2N2O7. © (2015) Trans Tech Publications, Switzerland.
收录类别:EI;SCOPUS
资源类型:会议论文;期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-84928670286&doi=10.4028%2fwww.scientific.net%2fMSF.816.91&partnerID=40&md5=ff77159d3317a1c122d3d984355c3f74
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