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  4. Temperaturabhängige Gefüge- und Eigenschaftsänderungen eines C/C-Faserverbundwerkstoffs mit optionaler Oxidationsschutzbeschichtung
 
Zitierlink URN
https://nbn-resolving.de/urn:nbn:de:gbv:46-00101845-16

Temperaturabhängige Gefüge- und Eigenschaftsänderungen eines C/C-Faserverbundwerkstoffs mit optionaler Oxidationsschutzbeschichtung

Veröffentlichungsdatum
2010-12-15
Autoren
Gaab, Lotta  
Betreuer
Koch, Dietmar  
Gutachter
Krenkel, Walter  
Zusammenfassung
For hot applications, materials which can withstand those extraordinary thermal loads are absolutely necessary. Carbon fiber reinforced carbon (C/C) materials are excellent candidates for structural components in aerospace industry. They possess a high specific strength and stiffness, which do not decrease as a function of the applied temperature. In this work C/C composites with different fiber orientations were investigated. The composites were fabricated via rapid-CVI process which fastens process times significantly and thus offers an economical alternative to conventional pyrolytic derived C/C materials. In order to prevent the material of oxidative degradation, an optional oxidation protection coating of SiSiC was applied. The oxidation properties as well as the mechanical behavior at high temperatures were examined, reflecting the significant challenges in real use. Thermogravimetric analysis was carried out and tensile tests on the material from room temperature up to temperatures of 1500 °C under nitrogen and air atmosphere. Furthermore, the interlaminar properties of the material was tested and a separation of the components, fiber and matrix, could be realized by appropriate test combinations. The microstructural investigation was carried out by scanning electron micrography and by X-ray diffraction.
Schlagwörter
carbon/carbon composites

; 

high temperature

; 

mechanical properties

; 

oxidation behavior

; 

microstructural analysis
Institution
Universität Bremen  
Fachbereich
Fachbereich 04: Produktionstechnik, Maschinenbau & Verfahrenstechnik (FB 04)  
Dokumenttyp
Dissertation
Zweitveröffentlichung
Nein
Sprache
Deutsch
Dateien
Lade...
Vorschaubild
Name

00101845-1.pdf

Size

13.25 MB

Format

Adobe PDF

Checksum

(MD5):641443d70bb41aaf763954fc40ea821c

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