Effects of Alumina on Cristobalite Crystallization and Properties of Silica-Based Ceramic Cores
文献类型：期刊论文
| 作者 | Liang, J. J. ; Lin, Q. H. ; Zhang, X. ; Jin, T. ; Zhou, Y. Z. ; Sun, X. F. ; Choi, B. G. ; Kim, I. S. ; Do, J. H. ; Jo, C. Y. |
| 刊名 | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2017-02-01 |
| 卷号 | 33期号:2页码:204-209 |
| 关键词 | Silica-based ceramic cores Alumina Cristobalite crystallization Properties |
| ISSN号 | 1005-0302 |
| 通讯作者 | Liang, JJ ; Zhou, YZ (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China. |
| 中文摘要 | In this work, the influences of alumina addition on cristobalite crystallization and properties of injection molded silica-based ceramic cores were investigated. X-ray diffraction (XRD) was used to characterize phase transformations in the samples, and the XRD result indicated that the addition of alumina promoted crystallization of fused silica during sintering at 1180-1220 degrees C and thus increases the amount of cristobalite. The increased amount of cristobalite as well as alumina addition led to much more thermal dilation due to their higher coefficients of thermal expansion than that of fused silica. The flexural strengths at room temperature and 1500 degrees C were tested, and it was shown that alumina addition could not affect room temperature strength, but decreased the flexural strength at 1500 degrees C. In addition, deflection resistance during heating to high temperatures was investigated, and the result indicated that alumina addition speeded up high temperature softening of the samples. XRD and scanning electron microscopy equipped with energy dispersive spectrometry (SEM/EDS) analysis suggested that this softening behavior was related with viscous flow sintering which could be accelerated by the reaction of alumina and silica with a product of mullite. Copyright (C) 2017, The editorial office of Journal of Materials Science & Technology. Published by Elsevier Limited. |
| 学科主题 | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2017-08-17 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/78312]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Liang, J. J.,Lin, Q. H.,Zhang, X.,et al. Effects of Alumina on Cristobalite Crystallization and Properties of Silica-Based Ceramic Cores[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2017,33(2):204-209. |
| APA | Liang, J. J..,Lin, Q. H..,Zhang, X..,Jin, T..,Zhou, Y. Z..,...&Jo, C. Y..(2017).Effects of Alumina on Cristobalite Crystallization and Properties of Silica-Based Ceramic Cores.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,33(2),204-209. |
| MLA | Liang, J. J.,et al."Effects of Alumina on Cristobalite Crystallization and Properties of Silica-Based Ceramic Cores".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 33.2(2017):204-209. |
入库方式： OAI收割
来源：金属研究所
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