Strong SiC Porous Ceramic Obtained by Sintering of Reticulated Aligned SiC Nanowires

被引：1

作者：

Zhu Quan ^{[1
,2
,3
]}

Hu Jianbao ^{[1
,2
]}

Yang Jinshan ^{[1
,2
]}

Zhou Haijun ^{[1
,2
]}

Dong Shaoming ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

[2] Chinese Acad Sci, Struct Ceram & Composites Engn Res Ctr, Shanghai Inst Ceram, Shanghai 200050, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

JOURNAL OF INORGANIC MATERIALS | 2021年 / 36卷 / 05期

关键词：

porous ceramic; SiC; nanowire; additive manufacturing; orientation; SILICON-CARBIDE; MICROSTRUCTURE; STRENGTH; FOAMS;

D O I：

10.15541/jim20200265

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

High strength SiC porous ceramic with reticular pore structure is assembled by cross-lamination of layers comprised by aligned SiC nanowire (SiCNWs) struts printed through direct ink writing. SiCNWs networks exhibit a structure with highly interconnected porosity and an architecture formed by aligned SiCNWs struts. The effects of sintering temperature on the structures, phase evolutions and mechanical properties were studied. The high aspect ratio of SiCNWs was kept well at sintering temperature lower than 1900 degrees C. The bulk density, porosity and median pore diameter of aligned SiCNWs porous ceramics sintered at 1850 degrees C were 1.49 g/cm(3), 54.6% and similar to 1 mu m, respectively. Due to the effect of orientation and high strength of SiC nanowire struts, compressive strength of (245.5 +/- 0.7) MPa is achieved.

引用

页码：547 / 551

页数：5

共 23 条

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