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Micro and Nanocrystalline Silicide - Refractory Metals FGM for Materials Innovation in Transport Applications (SILTRANS)
Start date: Oct 1, 2009, End date: Sep 30, 2013 PROJECT  FINISHED 

The SILTRANS project focuses on the development of novel composites consisting of percolating shaped bodies made from refractory metals (Nb, Mo, W) which are embedded in silicide-matrix. In such composites the silicide matrix provides excellent oxidation resistance at high temperature (forming silica), while percolating refractory metal reinforcements enhances their strength at high temperature, ductility and creep resistance. The continuous metallic skeleton serves as efficient tool against crack propagation, thus improving toughness of material at both high and low temperatures. The volume content of silicides will gradiently increase from the refractory core, forming continuous skin at the surface. The design of these tailored gradient materials (FGM) will be based on multiscale modelling, characterisation and non-destructive evaluation techniques developed to understand the role of residual stresses and acting degradation mechanisms. The infiltration technique for manufacturing of complex near-net shape parts having self-healing oxide coating will open a cost efficient way for wide range of structural applications in space, automotive and energy production sectors, especially when reliable performance at high temperature (above 1500 K) in oxidizing environment is required. The large involvement of industrial partners guarantees the rapid market uptake for developed materials.
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