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Thermal Qualification of the UHTCMCs Produced Using RF-CVI Technique with VMK Facility at DLR

Venkatachalam, Vinothini and Blem, Sergej and Gülhan, Ali and Binner, Jon (2022) Thermal Qualification of the UHTCMCs Produced Using RF-CVI Technique with VMK Facility at DLR. Journal of Composites Science. Multidisciplinary Digital Publishing Institute (MDPI). doi: 10.3390/jcs6010024. ISSN 2504-477X.

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Ultra high-temperature ceramic matrix composites (UHTCMCs) based on carbon fibre (Cf) have been shown to offer excellent temperature stability exceeding 2000 °C in highly corrosive environments, which are prime requirements for various aerospace applications. In C3Harme, a recent European Union-funded Horizon 2020 project, an experimental campaign has been carried out to assess and screen a range of UHTCMC materials for near-zero ablation rocket nozzle and thermal protection systems. Samples with ZrB2-impregnated pyrolytic carbon matrices and 2.5D woven continuous carbon fibre preforms, produced by slurry impregnation and radio frequency aided chemical vapour infiltration (RF-CVI), were tested using the vertical free jet facility at DLR, Cologne using solid propellants. When compared to standard CVI, RFCVI accelerates pyrolytic carbon densification, resulting in a much shorter manufacturing time. The samples survived the initial thermal shock and subsequent surface temperatures of >2000 °C with a minimal ablation rate. Posttest characterisation revealed a correlation between surface temperature and an accelerated catalytic activity, which lead to an understanding of the crucial role of preserving the bulk of the sample.

Item URL in elib:https://elib.dlr.de/186090/
Document Type:Article
Title:Thermal Qualification of the UHTCMCs Produced Using RF-CVI Technique with VMK Facility at DLR
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Venkatachalam, VinothiniUniversity of Birmingham, United KingdomUNSPECIFIEDUNSPECIFIED
Binner, JonUniversity of Birmingham, United KingdomUNSPECIFIEDUNSPECIFIED
Date:January 2022
Journal or Publication Title:Journal of Composites Science
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
Keywords:UHTC, diborides, UHTCMC, CVI, RFCVI, VMK, carbon, ablation, propulsion, DLR
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transportation
DLR - Research area:Raumfahrt
DLR - Program:R RP - Space Transportation
DLR - Research theme (Project):R - Reusable Space Systems and Propulsion Technology
Location: Köln-Porz
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Supersonic and Hypersonic Technology
Deposited By: Blem, Sergej
Deposited On:07 Sep 2022 14:29
Last Modified:07 Sep 2022 14:29

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