|
Improvement of densification and mechanical properties of Al2O3-B4C ceramics
|
|
|
| 【文章作者】Guo, Wei-Ming;Zhang, Zhi-Lin;Li, Jing-Xi;You, Yang;Wu, Shang-hua;Lin, Hua-Tay |
| 【文章摘要】 Al2O3-B4C ceramics had poor densification, due to the formation of Al18B4O33 phase by reaction between Al2O3 and B2O3 on the surface of B4C. In the present work, Y2O3 or Ti additive together with ZrO2 from milling media were introduced into Al2O3-B4C ceramics. Results showed that Y2O3 reacted with B2O3 to produce YBO3 phase, and removed Al18B4O33 phase, resulting in the improved densification and the coarse microstructure. However, Ti and ZrO2 reacted with B2O3 to produce hard TiB2 and ZrB2 phases, removed the most of Al18B4O33 phase, refined microstructure by pinning effect of hard particles, and improved densification and mechanical properties. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved. |
| 【关 键 字】 |
|
【卷】42 【ISSUE】9 【ISSUEID】815C0073
【文章期份】2016
【发布日期】2016/8/11 17:04:15
点击率：1
打印
关闭
|
|