Results 31 to 40 of about 9,574,494 (334)

Integrative improvement on thermophysical properties and ablation resistance of laminated carbon/carbon composites modified by in situ grown HfC nanowires onto carbon fiber cloths

, 2021
HfC nanowires modified carbon fiber cloth laminated carbon/carbon (HfCnw-C/C) composites were fabricated by in situ growth of HfC nanowires on carbon cloths via catalytic CVD, followed with lamination of the cloths and densification by pyrolytic carbon ...
Song Tian, Yu-Lei Zhang, Lü Zhou, Shi-Lin Huang, Jun-Jie Ren, Jin-Cui Ren, Shou-Yang Zhang, He-Jun Li   +7 more
semanticscholar   +1 more source

Nd:YAG Laser Ablation and Acid Resistance of Enamel

Dental Materials Journal, 2003
The acid resistance of Nd:YAG laser-ablated enamel surfaces was studied by evaluating crystal structure, mineral distribution, and fluorescence radiance and image in the present study. For comparison, 37% phosphoric acid etching was performed. The formation of beta-tricalcium phosphate (beta-TCP) was confirmed in the laser-ablated surface.
KWON, Yong Hoon, KWON, Oh-Won, KIM, Hyung-Il, KIM, Kyo-Han   +3 more
openaire   +3 more sources

Influence of Bond Coat on Thermal Shock Resistance and Thermal Ablation Resistance for Polymer Matrix Composites

Frontiers in Materials, 2021
Polymer matrix composites (PMCs) have been widely used in aero industry because of its low density and high strength-to-weight ratio. However, the application of PMCs is still limited by poor abrasion resistance, weak oxidation resistance and low ...
Jia-Hui Zhou, Jia-Ning Jiang, Long-Hui Deng, Jing-Qi Huang, Jie-Yan Yuan, Xue-Qiang Cao   +5 more
semanticscholar   +1 more source

Influence of Ablation on Differential Arc Resistance

PLASMA PHYSICS AND TECHNOLOGY, 2017
The influence of ablation on the du/di behavior of an arc in a model gas circuit breaker was examined. Specifically the transition from a state without ablation in the nozzle towards states with ablation was of interest, since prior work indicated that for high currents the voltage becomes constant or du/di gets even positive if ablation is present ...
Bort, Lorenz; id_orcid0000-0002-1185-869X, Freiermuth, Vincent, Franck, Christian; id_orcid0000-0002-2201-7327   +2 more
openaire   +2 more sources

Efficacy and Safety of an Irrigated-Tip Catheter for the Ablation of Accessory Pathways Resistant to Conventional Radiofrequency Ablation [PDF]

Circulation, 2000
Background —Radiofrequency catheter ablation of accessory pathways (APs) is very effective in all but a minority of patients. We examined the usefulness and safety of irrigated-tip catheters in treating patients with APs resistant to conventional catheter ablation. Methods and Results
T, Yamane, P, Jaïs, D C, Shah, M, Hocini, J T, Peng, I, Deisenhofer, J, Clémenty, M, Haïssaguerre   +7 more
openaire   +2 more sources

Effect of fiber-oriented direction on mechanical and ablative performance of C/C-HfC-ZrC-SiC composites

Journal of Asian Ceramic Societies, 2020
C/C-HfC-ZrC-SiC composites are fabricated by precursor infiltration and pyrolysis process by using SiC, ZrC, and HfC precursors. With incorporation of ZrC-SiC ceramics, the ablation rates of the C/C-HfC-ZrC-SiC composites are one order magnitude lower ...
Xin Yang, Xianglong Hu, Zhean Su, Anhong Shi, Yuanqi Weng, Qizhong Huang   +5 more
doaj   +1 more source

Effect of solid oxidation products on the ablation mechanisms of ZrC and HfC based coatings above 2000°C

Journal of Materials Research and Technology, 2023
Solid and liquid oxidation products have been considered to be the key issues to influence the ablation resistance of UHTCs coatings. However, the effect of solid oxidation products on the ablation performance is not clear.
Yixiang Xu, Xiaohui Pan, Shansong Huang, XueTing Xu, Yaran Niu, Xin Zhong, Xuebin Zheng   +6 more
doaj   +1 more source

Novel HfxTa1−xC solid solution nanowire toughened HfC coating: An effective strategy for synchronous enhanced mechanical and anti-ablation performance

Journal of Advanced Ceramics
Ultra-high-temperature ceramic nanowires have shown increasing potential for use as thermal structural components. Herein, novel single-crystal Hf0.5Ta0.5C solid solution nanowires were synthesized and incorporated with a HfC coating to construct a ...
Hui Chen, Yulei Zhang, Yanqin Fu, Wenhan Gai, Junhao Zhao, Haohui Zhang   +5 more
doaj   +1 more source

Characterization of the aerosol produced by infrared femtosecond laser ablation of polyacrylamide gels for the sensitive inductively coupled plasma mass spectrometry detection of selenoproteins [PDF]

, 2009
A 2D high repetition rate femtosecondlaserablation strategy (2-mm wide lane) previously developed for the detection of selenoproteins in gel electrophoresis by inductively coupled plasma mass spectrometry was found to increase signal sensitivity by a ...
Claverie, Fanny, Fernandez Garcia, Beatriz, Fernandez, B., Pécheyran, Christophe, Mounicou, Sandra, Alexis, Joël, Claverie, F., Donard, Olivier François Xavier, Lobinski, Ryszard, Ballihaut, Guillaume, Ballihaut, G., Donard, Olivier F. X., Ryszard Lobinski, Fanny Claverie, Sandra Mounicou, Guillaume Ballihaut, Beatriz Fernandez, Olivier F.X. Donard, Joël Alexis, Alexis, J., Christophe Pécheyran   +20 more
core   +1 more source

The Influence of Environmental Temperature on the Passive Oxidation Process in the C/SiC Composite

Fractal and Fractional
The C/SiC composite plays a crucial role in providing thermal protection for hypersonic vehicles. The SiO2 oxide layer formed via passive oxidation during ablation constitutes a typical porous medium with self-similarity.
Qingyong Zhu, Haixin Jie, Shun Lu, Zhihui Li   +3 more
doaj   +1 more source