Growth mechanism of carbon microcoils with changing fiber cross-section shape
文献类型：期刊论文
| 作者 | J. B. Cheng ; J. H. Du ; S. Bai |
| 刊名 | New Carbon Materials
 |
| 出版日期 | 2009 |
| 卷号 | 24期号:4页码:354-358 |
| 关键词 | Carbon microcoils Growth model Ni Catalyst Catalytic anisotropy chemical-vapor-deposition extension characteristics catalytic pyrolysis acetylene coils morphology substrate |
| ISSN号 | 1007-8827 |
| 中文摘要 | Carbon microcoils (CMCs) with a fiber cross-section changing from flat to circular along with a coil diameter changing from 4.2 to 6.0 mu m, which may develop a novel spring for micromechanical systems, were obtained by controlling the acetylene flow rate using Ni catalyst at a temperature of 1 013-1 053 K. A growth model for these changes was proposed in which catalytic anisotropy is considered to be the possible factor changing the fiber cross-section shape of the CMCs. Owing to the change of catalytic anisotropy caused by reaction conditions, the same slender catalyst can produce both flat CMCs and circular CMCs depending on its relative orientation to the fiber axis. A cubic Ni catalyst can only produce a circular CMC, and can only change the coil diameter upon changing the reaction conditions. The model will give more insight into the formation of CMCs and provide information on the controlled synthesis of CMCs and carbon fibers. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/31847]  |
| 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. B. Cheng,J. H. Du,S. Bai. Growth mechanism of carbon microcoils with changing fiber cross-section shape[J]. New Carbon Materials,2009,24(4):354-358. |
| APA | J. B. Cheng,J. H. Du,&S. Bai.(2009).Growth mechanism of carbon microcoils with changing fiber cross-section shape.New Carbon Materials,24(4),354-358. |
| MLA | J. B. Cheng,et al."Growth mechanism of carbon microcoils with changing fiber cross-section shape".New Carbon Materials 24.4(2009):354-358. |
入库方式： OAI收割
来源：金属研究所
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