Related mechanism of transparency in MgAl(2)O(4) nano-ceramics prepared by sintering under high pressure and low temperature
文献类型：期刊论文
| 作者 | J. Zhang ; T. C. Lu ; X. H. Chang ; N. Wei ; W. Xu |
| 刊名 | Journal of Physics D-Applied Physics
 |
| 出版日期 | 2009 |
| 卷号 | 42期号:5 |
| 关键词 | model nanoceramics alumina powders |
| ISSN号 | 0022-3727 |
| 中文摘要 | We fabricate transparent MgAl(2)O(4) nano-ceramics, which are composed of 40 nm grains, by sintering under high pressure and low temperatures. Analysis of the grain size, differential strains, yield strength and porosity obtained from transmission electron microscopy and x-ray diffraction indicates that the pores at the grain boundary triple junctions can retard grain boundary migration and thus prevent grain growth. It is found that the relatively high density for MgAl(2)O(4) nano-ceramics produced at low-temperature and high pressure is attributed mainly to the large energy in the grain exteriors. The decrease in the transparency with increasing temperature (> 700 degrees C) is therefore a result of the light scattering at large pores. On the basis of these results, we propose a mechanism of transparency in MgAl(2)O(4) nano-ceramics. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/32547]  |
| 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 | J. Zhang,T. C. Lu,X. H. Chang,et al. Related mechanism of transparency in MgAl(2)O(4) nano-ceramics prepared by sintering under high pressure and low temperature[J]. Journal of Physics D-Applied Physics,2009,42(5). |
| APA | J. Zhang,T. C. Lu,X. H. Chang,N. Wei,&W. Xu.(2009).Related mechanism of transparency in MgAl(2)O(4) nano-ceramics prepared by sintering under high pressure and low temperature.Journal of Physics D-Applied Physics,42(5). |
| MLA | J. Zhang,et al."Related mechanism of transparency in MgAl(2)O(4) nano-ceramics prepared by sintering under high pressure and low temperature".Journal of Physics D-Applied Physics 42.5(2009). |
入库方式： OAI收割
来源：金属研究所
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