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您的检索式：作者名="Anselmo Cecere"
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| 1 | Surface tension-driven flow in wickless heat pipes with self-rewetting fluids显示文摘 | Raffaele Savino Anselmo Cecere Roberto Di Paola | 2009 | International Journal of Heat and Fluid Flow2009，，2： | 1 |
| 2 | Propulsion tests on ultra-high-temperature ceramic matrix composites for reusable rocket nozzles显示文摘Ultra-high-temperature ceramic matrix composites(UHTCMCs)based on a ZrB_(2)/SiC matrix have been investigated for the fabrication of reusable nozzles for propulsion.Three de Laval nozzle prototypes,obtained by sintering with either hot pressing(HP)or spark plasma sintering(SPS),were tested 2-3 times in a hybrid rocket motor for proving reusability.Sections were extracted after oxidation tests to study the microstructural changes and oxidative and thermomechanical stresses induced by the repeated tests.Compared to a reference graphite nozzle,no measurable erosion was observed for the UHTCMC-based nozzles.The oxidation mechanism consisted in the formation of a ZrO_(2)intermediate layer,with a liquid silicon oxide(SiO_(2))layer on the surface that was displaced by the action of the gas flux towards the divergent part of the nozzle,protecting it from further oxidation.Both specimens obtained by HP and SPS displayed similar performance,with very slight differences,which were attributed to small changes in porosity.These tests demonstrated the capability of complex-shaped prototypes made of the developed UHTCMCs to survive repeated exposure to environments representative of a realistic space propulsion application,for overall operating time up to 30 s,without any failure nor measurable erosion,making a promising step towards the development of reusable rocket components. | Diletta Sciti Antonio Vinci Luca Zoli Pietro Galizia Simone Failla Stefano Mungiguerra Giuseppe D.Di Martino Anselmo Cecere Raffaele Savino | 2023 | Journal of Advanced Ceramics2023，12，7： | 0 |
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