Chemical compatibility between components in magnesium-carbon composites
| Project start: | 01.01.2017 |
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| Project end: | 31.12.2019 |
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| Programme: | VEGA |
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| Project number: | 2/0144/17 |
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| Institute position in the project: | The only one project investigator |
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| Project leader: | Stanislav Kúdela |
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The present project is focused on the problem of the formation of reaction bond between the matrix and the reinforcement in magnesium - carbon fiber type composites. According to the project idea, the preform of carbon fibers will be infiltrated with magnesium alloy containing carbide-forming element X (Li, Si) wherein the extent of formation of carbides will be controlled through: (a) concentration of the element X, (b) graphitization degree of carbon fibers and (c) temperature-time regime of the infiltration process, in order to prepare the composites with powerful fiber/matrix interfacial bond.
The main scientific goal of the project is to investigate impact of interaction between components on the deformation behavior of given composites and, on this basis, to optimize their fabrication process.
The project is thematically divided into two stages:
- Experiments of the pressure infiltration of the preform of various types of carbon fibers with Mg-X alloys in a laboratory autoclave at variable processing parameters (temperature, pressure, time) to prepare the composites of the given type.
- Study of the relationship between the structure and the deformation behavior of composites prepared in order to characterize the functionality of the reaction bond. As a result, there should be proposed a suitable carbon fiber type, optimum composition of magnesium alloy and optimum processing parameters.