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MICROSTRUCTURES AND PHYSICAL PROPERTIES OF BIOMORPHIC SISIC CERAMICS MANUFACTURED VIA LSI-TECHNIQUE

Weber, Steffen and Jemmali, Raouf and Koch, Dietmar and Voggenreiter, Heinz (2012) MICROSTRUCTURES AND PHYSICAL PROPERTIES OF BIOMORPHIC SISIC CERAMICS MANUFACTURED VIA LSI-TECHNIQUE. 36th International Conference and Exposition on Advanced Ceramics and Composites, 22.-27. Jan 2012, Daytona Beach, USA.

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Abstract

Biomorphic SiSiC ceramic composites were produced by liquid silicon infiltration (LSI) process. These materials are based on activated coal (ACBC) and wood fibers (MDF). Microstructural characteristics in green-, carbon- and SiSiC-body modification were investigated by analyzing curved structures (type charcoal) and planar structures (type MDF). Therefore polished and unpolished specimens have been examined with scanning electron microscopy (SEM), microfocus X-ray computed tomography (CT) and respective evaluation software. Focused on the objective of near net shape reproducibility for the ceramic composites, different shrinkage and silicon uptake behavior were identified. Furthermore, significant capillarities, densities and porosities could be determined and valued regarding the objective and highest possible SiC content. The appearing different SiSiC microstructures influence the physical properties of SiSiC ceramics such as flexural strength, Young’s modulus and hardness, which were detected with standardized testing methods.

Document Type:Conference or Workshop Item (Paper)
Title:MICROSTRUCTURES AND PHYSICAL PROPERTIES OF BIOMORPHIC SISIC CERAMICS MANUFACTURED VIA LSI-TECHNIQUE
Authors:
AuthorsInstitution or Email of Authors
Weber, SteffenBK
Jemmali, RaoufBK
Koch, DietmarBK
Voggenreiter, HeinzBK
Date:2012
Status:Published
Keywords:SiSiC ceramic composites, liquid silicon infiltration (LSI), SiSiC microstructures, physical properties of SiSiC ceramics
Event Title:36th International Conference and Exposition on Advanced Ceramics and Composites
Event Location:Daytona Beach, USA
Event Type:international Conference
Event Dates:22.-27. Jan 2012
HGF - Research field:Energy
HGF - Program:other
HGF - Program Themes:E - no assignement
DLR - Research area:Energy
DLR - Program:E - no assignement
DLR - Research theme (Project):E -- no assignement
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design
Institute of Structures and Design > Ceramic Composite Structures
Deposited By: Steffen Weber
Deposited On:03 Sep 2012 10:27
Last Modified:03 Sep 2012 10:27

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