標題: | Effect of yttria on interfacial reactions between titanium melt and hot-pressed yttria/zirconia composites at 1700 degrees C |
作者: | Lin, Chien-Cheng Chang, Yao-Wen Lin, Kun-Lin Lin, Kun-Fung 材料科學與工程學系 Department of Materials Science and Engineering |
公開日期: | 1-七月-2008 |
摘要: | Various Y(2)O(3)/ZrO(2) samples were fabricated by hot pressing, whereby Y(2)O(3) was mutually dissolved or reacted with ZrO(2) as a solid solution or Zr(3)Y(4)O(12). Hot-pressed samples were allowed to react with Ti melt at 1700 degrees C for 10 min in argon. Microstructural characterization was conducted using X-ray diffraction and analytical electron microscopy. The Y(2)O(3)/ZrO(2) samples became more stable with increasing Y(2)O(3) because Y(2)O(3) was hardly reacted and dissolved with Ti melt. The incorporation of more than 30 vol% Y(2)O(3) could effectively suppress the reactions in the Ti side, where only a very small amount of alpha-Ti and beta'-Ti was found. When ZrO(2) was dissolved into Ti on the zirconia side near the original interfaces, Y(2)O(3) reprecipitated in the samples containing 30%-70 vol% Y(2)O(3), because the solubility of Y(2)O(3) in Ti was very low. In the region far from the original interface, alpha-Zr, Y(2)O(3), and/or residual Zr(3)Y(4)O(12) were found in the samples containing more than 50 vol% Y(2)O(3) and the amount of alpha-Zr decreased with increasing Y(2)O(3). |
URI: | http://dx.doi.org/10.1111/j.1551-2916.2008.02428.x http://hdl.handle.net/11536/8589 |
ISSN: | 0002-7820 |
DOI: | 10.1111/j.1551-2916.2008.02428.x |
期刊: | JOURNAL OF THE AMERICAN CERAMIC SOCIETY |
Volume: | 91 |
Issue: | 7 |
起始頁: | 2321 |
結束頁: | 2327 |
顯示於類別: | 期刊論文 |