Effect of Y2O3 Addition on Preparation and Properties of β-SiAlON Reticular Porous Ceramic Filters

doi:10.19691/j.cnki.1004-4493.2022.04.006

China's Refractories ›› 2022, Vol. 31 ›› Issue (4): 28-33.DOI: 10.19691/j.cnki.1004-4493.2022.04.006

Effect of Y₂O₃ Addition on Preparation and Properties of β-SiAlON Reticular Porous Ceramic Filters

GAO Jinxing^{1, *}, XU Lingling¹, LI Liya¹, MU Jinghua¹, LI Xiaokai¹, XU Enxia¹, GUO Donghui^{2, 3}, MENG Dekang^{2, 3}, ZHOU Gaofeng^{2, 3}, CHEN Shoujie^{2, 3}

1 School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450052, China;
2 Henan Xuantong New Materials Technology Co., Ltd., Zhengzhou 450000, China;
3 Henan Tongyu Metallurgy Materials Group Co., Ltd., Nanyang 473000, China

Online:2022-12-15 Published:2022-12-23
Contact: * e-mail: gaojinxing@zzu.edu.cn
About author:Gao Jinxing, born in 1990, is an associate professor. He obtained his Ph. D from Chongqing University in December 2016, majoring in iron and steel metallurgy. He has been working in the School of Materials Science and Engineering, Zhengzhou University since 2017, mainly engaging in the research and application of high-temperature functional materials.

Abstract

Abstract: β-SiAlON reticular porous ceramics (Si_6-ZAl_ZO_ZN_8-Z, Z=2) were prepared with α-Al₂O₃, AlN and Si as raw materials and Y₂O₃ as the sintering aid by the foam impregnation method. The influence of the Y₂O₃ addition (0, 3%, 6% and 9%, by mass) on the microstructure and the properties of the samples was studied. The results show that the Y₂O₃ addition is conductive to the sintering of samples and the growth of grains. The sample added with 6% Y₂O₃ has the optimal properties: the apparent porosity of 82.9%, the bulk density of 0.53 g · cm^-3, the cold compressive strength of 1.97 MPa, and the residual cold compressive strength of 1.68 MPa after oxidation, which can be used as porous ceramic filters.

Key words: porous ceramics, β-SiAlON, yttrium oxide, foam impregnation method

GAO Jinxing, XU Lingling, LI Liya, MU Jinghua, LI Xiaokai, XU Enxia, GUO Donghui, MENG Dekang, ZHOU Gaofeng, CHEN Shoujie. Effect of Y₂O₃ Addition on Preparation and Properties of β-SiAlON Reticular Porous Ceramic Filters[J]. China's Refractories, 2022, 31(4): 28-33.

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Effect of Y₂O₃ Addition on Preparation and Properties of β-SiAlON Reticular Porous Ceramic Filters

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