Pressureless Sintering and Properties Investigation of Silicon Nitride

被引：2

作者：

Li, Bin ^{[1
]}

Feng, Yi ^{[1
]}

Liu, Huiqiang ^{[1
]}

Zhu, Yanfang ^{[1
]}

Yu, Dongbo ^{[1
]}

Zhang, Xuebin ^{[1
]}

Pan, Xiaobing ^{[2
]}

Tu, Jing ^{[2
]}

Ouyang, Xiaoping ^{[2
]}

Cao, Liangzhi ^{[3
]}

Wu, Hongchun ^{[3
]}

机构：

[1] Hefei Univ Technol, Sch Mat Sci & Engn, Hefei 230009, Anhui, Peoples R China

[2] Northwest Inst Nucl Technol, Xian 710024, Peoples R China

[3] Xi An Jiao Tong Univ, Sch Energy & Power Engn, Xian 710049, Peoples R China

来源：

ADVANCED ENGINEERING MATERIALS, PTS 1-3 | 2011年 / 194-196卷

关键词：

Silicon Nitride; Pressureless Sintering; Starting Powder; Sintering Additive; Mechanical Property; BETA-SI3N4; ADDITIVES;

D O I：

10.4028/www.scientific.net/AMR.194-196.1464

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Different grain size of starting powder was choosed and different sintering additives were used to fabricate Si3N4 ceramics by pressureless sintering. Samples' relative density and mechanical properties including Vickers hardness, bending strength and fracture toughness were tested. Then XRD, SEM and EDS were carried out to identify phase and observe microstructure and fracture morphology. The result shows that high purity alpha phase Si3N4 powder of 5 mu m is suitable for sintering and combination of 5 wt.% MgO +5 wt.% Y2O3 is most effective within six kinds of sintering aids.

引用

页码：1464 / +

页数：2

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