Porous Y2SiO5 Ceramic with Low Thermal Conductivity

材料科学技术（英文）, 2012, 28(9): 799-802.

Porous Y2SiO5 Ceramic with Low Thermal Conductivity

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1.High Performance Ceramic Division, Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China Graduate School of Chinese Academy of Sciences, Beijing 100039, China

2.High Performance Ceramic Division, Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

关键词： Y2SiO5 , 多孔体 , 陶瓷 , 导热系数 , 固相体积分数 , 抗压强度 , 孔隙率 , 叔丁基

Porous Y2SiO5 Ceramic with Low Thermal Conductivity

Keywords： Porous ceramic , Yttrium , Thermal conductivity , Freeze casting , Y2SiO5 ,

Porous Y2Si05 ceramic was fabricated by freeze casting with tert-butyl alcohol as solvent. The porous Y2SiO5 ceramic possessed long straight pore structure. With decreasing solid loading from 20 to 10 vol.%, the porosity of the Y2SiO5 ceramic increased linearly from 45% to Y2%, while the compressive strength declined from 23.2 to 3.2 MPa. The thermal conductivity of Y2SiO5 decreased from 2.34 W/mK for the dense bulk to 0.05 W/mK for the porous body with a porosity of 57%.

参考文献

[1]	S.A. Silva;D.D. Brunelli;F.C.L. Melo .Preparation of a reticulated ceramic using vegetal sponge as templating[J].CERAMICS INTERNATIONAL,2009(4):1575-1579.

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Porous Y2SiO5 Ceramic with Low Thermal Conductivity

Porous Y2SiO5 Ceramic with Low Thermal Conductivity

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