INFLUENCE OF Al2O3 ON PREPARING POROUS SILICON NITRIDE BASED CERAMIC FROM RICE HUSK

被引：0

作者：

Guo, Wei ^{[1
]}

Xu, Xiaomin ^{[1
,2
]}

Yan, Chen ^{[1
]}

Jiang, Cuifeng ^{[1
]}

Jiang, Jinhai ^{[1
]}

Liu, Tiantian ^{[1
,2
]}

机构：

[1] Yancheng Inst Technol, Sch Mat Sci & Engn, Yancheng 224051, Jiangsu, Peoples R China

[2] Anhui Univ Sci & Technol, Sch Mat Sci & Engn, Huainan 232001, Anhui, Peoples R China

来源：

FRESENIUS ENVIRONMENTAL BULLETIN | 2018年 / 27卷 / 08期

关键词：

Porous silicon nitride based ceramic; rice husk; Al2O3; CARBOTHERMAL REDUCTION; MICROSTRUCTURE;

D O I：

暂无

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Porous silicon nitride based ceramic was directly fabricated by carbothermal reduction nitridation method with carbonized rice husks and alpha-Si3N4 powder as raw material, MgO and Al2O3 as sintering additives. While 6%similar to 9% Al2O3 was added, partial Al2O3 was dissolved into the Si3N4 crystal lattices to form beta-sialon solid solution at the temperature of 1550 degrees C, resulting in interplanar spacing and cell parameters increased. When 6%similar to 9% Al2O3 was added, the porous silicon nitride based ceramic sintered at 1550 degrees C had a large flexural strength of 103.72 MPa, the open porosity reached 35.98%, and exhibit good oxidation resistance.

引用

页码：5647 / 5654

页数：8

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