Objective
Alumina ceramics have great application potential in various wear environments, but their intrinsic properties usually negatively affect mechanical properties. A significant attention has been therefore attracted to alumina-silicon carbide composites with high flexural strength and increased fracture toughness.
The mechanical properties of these composites are superior to those of the monolithic polycrystalline alumina. The most promising method appears to be the preparation of composites with higher silicon carbide content by the utilizing organosilicon polymers, which transforms to silicon carbide with high yield and without the formation of free carbon.
The volume fraction and the size of derived silicon carbide particles can be adjusted by the size and volume of open porosity in the pre-sintered alumina matrix, and by the concentration of the polymer solution. The most important seems to be the possibility of preparation of ceramics with microstructure of percolating phases of alumina and silicon carbide, but this in fact was not studied or published previously.
The major goal of the proposed project is the preparation of alumina-silicon carbide nanocomposites with a high content of silicon carbide and with homogeneously distribution of percolated phases. To achieve the goal these composites will be prepared by multiple infiltration of presintered alumina matrix with organosilicon polymer precursor and its consecutive in-situ pyrolytical decomposition. Both the hardness and fracture toughness are likely to increase, when fine-grained microstructure of percolating phases of alumina and silicon carbide will be formed.
The size, morphology and position of the carbide particles within the alumina matrix will be controlled by proper adjustment of the processing conditions. A significant improvement of reliability and reproducibility of the mechanical properties of alumina-silicon carbide composites is expected to result from the project.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- engineering and technology materials engineering composites
- natural sciences chemical sciences inorganic chemistry inorganic compounds
- natural sciences chemical sciences inorganic chemistry metalloids
- engineering and technology materials engineering ceramics
- engineering and technology materials engineering nanocomposites
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Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
FP6-2004-MOBILITY-5
See other projects for this call
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
KARLSRUHE
Germany
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.