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您的检索式：关键字=Ablation performance
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| 1 | SiC Nanowires Toughed HfC Ablative Coating for C/C Composites显示文摘In order to improve ablation resistance of carbon/carbon(C/C) composites,SiC nanowires were prepared on C/C composites surface in prior through chemical vapor reaction before HfC coating.SiC nanowires grew randomly and had good combination with HfC coating.SiC nanowires toughed HfC coating had lower linear and mass ablation rates than original HfC coating.The surface was much flatter and exhibited smaller cracks in center region.The ablation mechanism of HfC coating has been changed by SiC nanowires.Thicker HfO2 fused layer was formed on the surface of the toughed HfC coating,which could provide efficient protection for C/C composites.Therefore,SiC nanowires toughed HfC coating behaved in better ablation resistance. | Hejun Li Yongjie Wang Qiangang Fu Yanhui Chu | 2015 | Journal of Materials Science & Technology2015，31，1： | 4 |
| 2 | Investigation on plasma characteristics in a laser ablation pulsed plasma thruster by optical emission spectroscopy显示文摘In order to further improve the propulsion performance of pulsed plasma thrusters for space micro propulsion,a novel laser ablation pulsed plasma thruster is proposed,which separated the laser ablation and electromagnetic acceleration.Optical emission spectroscopy is utilized to investigate the plasma characteristics in the thruster.The spectral lines at different times,positions and discharge intensities are experimentally recorded,and the plasma characteristics in the discharge channel are concluded through analyzing the variation of spectral lines.With the discharge energy of 24 J,laser energy of 0.6 J and the use of aluminum propellant,the specific impulse and thrust efficiency reach 6808 s and 70.6%,respectively. | 张宇 吴建军 欧阳 张代贤 李健 | 2020 | Plasma Science and Technology2020，22，4： | 1 |
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