@PhdThesis{dbt_mods_00007619,
  author = 	{Stoll Dr.- Ing., Erick},
  title = 	{Potentialunterst{\"u}tzte Herstellung von Faserverbundwerkstoffen},
  year = 	{2007},
  month = 	{Mar},
  day = 	{07},
  keywords = 	{Elektrophoretische Infiltration; Oxid/Oxid-Verbundwerkstoffe; Mehrlageninfiltrationsverfahren; Laminationsverfahren; Nextel{\texttrademark} 720-Fasergewebe; Aluminiumoxid; Nanopartikel; Matrixbildung},
  abstract = 	{Abstract

The development of continuous fibre reinforced oxide/oxide-ceramic matrix 
composite has increased in the last years due to their degradation resistance in 
oxidation environments and their outstanding thermo-mechanical properties. Their 
application is of interest for example in components for combustions chambers, 
heat exchangers or in the aerospace industry.
The very difficult and expensive manufacturing of ceramic matrix composites 
reinforced with multi-fibre layers justifies the application of the 
electrophoretic infiltration technique (EPI) to produce the matrix.
The materials used in this work for EPI experiments are Nextel(TM) 720 fibre 
mats as reinforcement and alpha-Al2O3 powder as matrix. The obtained results of 
application of the electrophoretic deposition method are described and 
interpreted for this material combination.
The principal part of this work describes the mechanism of the electrophoretic 
deposition (EPD). A subsequent section explains in a proposed hypothesis the 
behaviour of the system alpha-Al2O3/Nextel(TM) 720. This model was verified by 
the experimental results. Moreover two techniques, based on the EPI, are 
described. They are called lamination method and simultaneous multilayer 
infiltration method.
The results of the simultaneous multilayer infiltration method show a completely 
filling of matrix powder into six fibre mats obtained in one EPI step. For this 
reason it is confirmed that the method is much more convenient than the 
conventional slurry infiltration to produce multilayer ceramic matrix 
composites.
The sintered composite samples exhibit a fibre volume fraction of 45 {\%} and a 
porosity of approx. of 30 {\%}. The fabricated ceramic matrix composite samples 
showed pseudo-ductile fracture behaviour and exhibit a weak bonding at the 
interface between fibres and matrix.},
  url = 	{https://www.db-thueringen.de/receive/dbt_mods_00007619},
  url = 	{http://uri.gbv.de/document/gvk:ppn:524122423},
  file = 	{:https://www.db-thueringen.de/servlets/MCRZipServlet/dbt_derivate_00010848:TYPE},
  language = 	{de}
}