| 引用本文: | 吴海波,袁波,韩建燊,王刚.凝胶注模常温发泡制备氧化铝多孔陶瓷[J].材料科学与工艺,2012,20(4):144-148.DOI:10.11951/j.issn.1005-0299.20120427. |
| WU Hai-bo,YUAN Bo,HAN Jian-shen,WANG Gang.Fabrication of porous alumina ceramics by gelcasting together with foaming at room temperature[J].Materials Science and Technology,2012,20(4):144-148.DOI:10.11951/j.issn.1005-0299.20120427. |
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| 摘要: |
| 以高纯氧化铝为原料,通过起泡结合凝胶注模成型的方法制备了孔隙率为77%～85%、孔径为40～200μm的氧化铝多孔陶瓷.多孔陶瓷组成为α-Al2O3.多孔陶瓷的微结构可通过固含量与发泡剂加入量的改变进行调控.多孔陶瓷的耐压强度为9.40～32.50MPa,且对其断裂方式进行了研究.多孔陶瓷在1000℃下的热导率为0.80 W·(m·K)-1. |
| 关键词: 起泡法 凝胶注模 多孔陶瓷 耐压强度 热导率 |
| DOI：10.11951/j.issn.1005-0299.20120427 |
| 分类号: |
| 基金项目:973项目(2010CB735810);国家自然科学基金(51002145);863计划项目(2009AA032503). |
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| Fabrication of porous alumina ceramics by gelcasting together with foaming at room temperature |
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WU Hai-bo, YUAN Bo, HAN Jian-shen, WANG Gang
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State Key Laboratory of Advanced Refractories,Sinosteel Luoyang Institute of Refractories Research Co.,Ltd.,Luoyang 471039,Henan,China
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| Abstract: |
| Porous alumina ceramics with 77%～85% porosity and pore size of 40～200 μm were fabricated by foaming together with gelcasting.The composition of porous ceramics was α-Al2O3,and the microstructures were tailored by modulating the solid content or the quantity of foaming agent added.The compressive strengths were 9.40～32.50 MPa,and the fracture mode was studied.The thermal conductivity of porous ceramics was 0.80 W·(m·K)-1 at 1 000 ℃. |
| Key words: porous ceramics foaming gelcasting compressive strengths thermal conductivity |
