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240329s2024 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.3c03851
|2 doi
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|a DE-627
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|a eng
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| 100 |
1 |
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|a Cao, Yingfei
|e verfasserin
|4 aut
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|a Effect of Hyperthermal Hybrid Gas Composition on the Interfacial Oxidation and Nitridation Mechanisms of Graphene Sheet
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|c 2024
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|a Text
|b txt
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Revised 09.04.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Graphene is one of the most promising thermal protection materials for high-speed aircraft due to its lightweight and excellent thermophysical properties. At high Mach numbers, the extremely high postshock temperature would dissociate the surrounding air into a mixture of atomic and molecular components in a highly thermochemical nonequilibrium state, which greatly affects the subsequent thermal chemical reactions of the graphene interface. Through establishing a reactive gas-solid interface model, the reactive molecular dynamics method is employed in this study to reveal the influences of the thermochemical nonequilibrium gas mixture on the thermal oxidation and nitridation mechanisms of graphene sheet. The results show that three distinctive stages can be recognized during bombardment of various nonequilibrium gas components toward the graphene sheet: (i) collision and surface adsorption stage, (ii) gas-solid heterogeneous reaction stage, and (iii) gas phase homogeneous reaction stage. The surface catalysis effect is found to be dominant during the first two stages, which can influence the following ablation behavior of graphene significantly at high-temperature conditions. Moreover, surface catalysis, oxidation, nitridation, and ablation mechanisms between nonequilibrium gas and graphene interface are revealed, which is of high relevance for future interfacial design and application of graphene as a thermal protection material
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|a Journal Article
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| 700 |
1 |
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|a Ye, Zhifan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhao, Jin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Cui, Zhiliang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Tang, Ju
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wen, Dongsheng
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1999
|g 40(2024), 14 vom: 09. Apr., Seite 7422-7432
|w (DE-627)NLM098181009
|x 1520-5827
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| 773 |
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|g volume:40
|g year:2024
|g number:14
|g day:09
|g month:04
|g pages:7422-7432
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| 856 |
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|u http://dx.doi.org/10.1021/acs.langmuir.3c03851
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