| Preparation of porous alumina ceramic with ultra-high porosity and long straight pores by freeze casting |
| D. Y. Li; M. S. Li
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| 2012
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| 发表期刊 | Journal of Porous Materials
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| ISSN | 1380-2224
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| 卷号 | 19期号:3页码:345-349 |
| 摘要 | Porous alumina ceramic was prepared by freeze casting method using tert-butyl alcohol as the solvent. The as-prepared porous alumina ceramic possessed long straight porous structure. The non-dendrite pore feature was quite distinguished from that prepared based on common solvents such as water and camphene. The porosity of the ceramic could be regulated through the solid loading. When the solid loading in the slurry was 20 vol%, the porosity of the alumina ceramic was 65%. With decreasing the solid loading, the porosity of the alumina ceramic increased linearly. The relationship between the total porosity (P) and initial solid loading (X) can be expressed as P = 98.8-17X. The ultra-high porosity of 82% could be achieved when the solid loading was 10 vol%. Moreover, the density of the porous alumina ceramic with the porosity of 82% was even lower than water's. The compressive strength of the porous alumina ceramic with the porosity of 63 and 82% was determined to be 37.0 and 2.6 MPa, respectively. |
| 部门归属 | [li, duanyang; li, meishuan] chinese acad sci, inst met res, shenyang natl lab mat sci, high performance ceram div, shenyang 110016, peoples r china. [li, duanyang] chinese acad sci, grad sch, beijing 100039, peoples r china.;li, ms (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, high performance ceram div, 72 wenhua rd, shenyang 110016, peoples r china.;mshli@imr.ac.cn
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| 关键词 | Porosity
Al2o3
Freeze Casting
Porous Ceramic
Tert-butyl Alcohol
Channels
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| URL | 查看原文
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.imr.ac.cn/handle/321006/60053
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| 专题 | 中国科学院金属研究所
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推荐引用方式
GB/T 7714 |
D. Y. Li,M. S. Li. Preparation of porous alumina ceramic with ultra-high porosity and long straight pores by freeze casting[J]. Journal of Porous Materials,2012,19(3):345-349.
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| APA |
D. Y. Li,&M. S. Li.(2012).Preparation of porous alumina ceramic with ultra-high porosity and long straight pores by freeze casting.Journal of Porous Materials,19(3),345-349.
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| MLA |
D. Y. Li,et al."Preparation of porous alumina ceramic with ultra-high porosity and long straight pores by freeze casting".Journal of Porous Materials 19.3(2012):345-349.
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