https://scholars.lib.ntu.edu.tw/handle/123456789/74654
標題: | Critical zirconia amount to enhance the strength of alumina | 作者: | Tuan, Wei-Hsing Chen, Jiang-Rung Ho, Chang-Ju |
關鍵字: | A. Sintering; B. Microstructure-final; C. Strength; D. Al2O3; D. ZrO2 | 公開日期: | 2008 | 卷: | 34 | 期: | 8 | 起(迄)頁: | 2129-2135 | 來源出版物: | Ceramics International | 摘要: | A small amount of zirconia particles (≤5 vol.%) is added into alumina in the present study. The grain size of alumina is reduced; the strength of alumina is therefore enhanced. Though the theoretical analysis demonstrates that an addition of 1 vol.% of fine zirconia particles is sufficient to prohibit the coarsening of alumina grains; the experimental measurements indicate that a minimum amount of 2 vol.% is required to reduce the coarsening of alumina matrix and its size distribution. This discrepancy is due to the separation between the zirconia particles and alumina grain boundaries, which takes place when the alumina grain size increases above a critical value. © 2007 Elsevier Ltd and Techna Group S.r.l. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/95474 https://www.scopus.com/inward/record.uri?eid=2-s2.0-53049083362&doi=10.1016%2fj.ceramint.2007.08.013&partnerID=40&md5=825ee29f7c788a7b2597aa5a34d0fb76 |
SDG/關鍵字: | Crystal growth; Electric network analysis; Grain (agricultural product); Grain boundaries; Grain size and shape; Ore treatment; Separation; Size separation; Zirconia; A. Sintering; Alumina grain boundaries; Alumina grains; Alumina matrix; B. Microstructure-final; C. Strength; Critical values; D. Al2O3; D. ZrO2; Experimental measurements; Grain sizes; Theoretical analysis; Zirconia particles; Alumina |
顯示於: | 材料科學與工程學系 |
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