| Ablation properties of C/C composites with various needled preforms prepared by isothermal chemical vapor infiltration; Ablation properties of C/C composites with various needled preforms prepared by isothermal chemical vapor infiltration | |
| S. F. Tang; D. L. Wang; J. Y. Deng; W. C. Liu; K. Yang | |
| 2007 ; 2007 | |
| Source Publication | Journal of Central South University of Technology
 ; Journal of Central South University of Technology
|
| ISSN | 1005-9784 ; 1005-9784 |
| Volume | 14Issue:1Pages:13-18 |
| Abstract | The ablation properties of C/C composites with four different needled preforms prepared by isothermal chemical vapor infiltration (ICVI), which are super-thin mat lay-up, 0 degrees/90 degrees weftless fabric lay-up, 0 degrees/45 degrees weftless fabric lay-up and 0 degrees/45 degrees twill fabric lay-up, were quantitatively evaluated by performing the ablation tests with an engine torch. And their ablation discrepancies were analyzed according to the surface characteristic, porosity and thermal diffusivity. The results show that the 0 degrees/45 degrees weftless composite has a flat eroded surface with no obvious macroscopic pits. Its thickness and mass erosion rates are decreased by about 46.8% and 34.8%, 25.0% and 27.5%, and 17.5% and 19.4% compared with those of the mat, the 0 degrees/90 degrees weftless and the 0 degrees/45 degrees twill composites, respectively. The ablation properties are mainly controlled by the thermo-chemical effect (oxidation), and a little by the thermo-mechanical effect (mechanical denudation). The needling fiber bundles play an important role in accelerating the ablation process and resulting in the heterogeneous ablation.; The ablation properties of C/C composites with four different needled preforms prepared by isothermal chemical vapor infiltration (ICVI), which are super-thin mat lay-up, 0 degrees/90 degrees weftless fabric lay-up, 0 degrees/45 degrees weftless fabric lay-up and 0 degrees/45 degrees twill fabric lay-up, were quantitatively evaluated by performing the ablation tests with an engine torch. And their ablation discrepancies were analyzed according to the surface characteristic, porosity and thermal diffusivity. The results show that the 0 degrees/45 degrees weftless composite has a flat eroded surface with no obvious macroscopic pits. Its thickness and mass erosion rates are decreased by about 46.8% and 34.8%, 25.0% and 27.5%, and 17.5% and 19.4% compared with those of the mat, the 0 degrees/90 degrees weftless and the 0 degrees/45 degrees twill composites, respectively. The ablation properties are mainly controlled by the thermo-chemical effect (oxidation), and a little by the thermo-mechanical effect (mechanical denudation). The needling fiber bundles play an important role in accelerating the ablation process and resulting in the heterogeneous ablation. |
| description.department | chinese acad sci, inst met res, shenyang 110016, peoples r china.;deng, jy (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;jydeng@imr.ac.cn ; chinese acad sci, inst met res, shenyang 110016, peoples r china.;deng, jy (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;jydeng@imr.ac.cn |
| Keyword | C/c Composites C/c Composites Ablation Ablation Fiber Architecture Fiber Architecture Isothermal Chemical Vapor Isothermal Chemical Vapor Infiltration Infiltration Thermal Diffusivity Thermal Diffusivity Carbon-carbon Carbon-carbon Cfrc Composites Cfrc Composites |
| URL | 查看原文 ; 查看原文 |
| WOS ID | WOS:000246083600003 ; WOS:000246083600003 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/33829 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | S. F. Tang,D. L. Wang,J. Y. Deng,et al. Ablation properties of C/C composites with various needled preforms prepared by isothermal chemical vapor infiltration, Ablation properties of C/C composites with various needled preforms prepared by isothermal chemical vapor infiltration[J]. Journal of Central South University of Technology, Journal of Central South University of Technology,2007, 2007,14, 14(1):13-18, 13-18. |
| APA | S. F. Tang,D. L. Wang,J. Y. Deng,W. C. Liu,&K. Yang.(2007).Ablation properties of C/C composites with various needled preforms prepared by isothermal chemical vapor infiltration.Journal of Central South University of Technology,14(1),13-18. |
| MLA | S. F. Tang,et al."Ablation properties of C/C composites with various needled preforms prepared by isothermal chemical vapor infiltration".Journal of Central South University of Technology 14.1(2007):13-18. |
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