Shock wave fabricated ceramic composite materials
conference paper
Using the pressure of shock waves, B+C and TiBe can be homogeneously densified into cylinders up to densities of about 85% of the maximum theoretical density. By capillary infiltration of the porous preform, cermets (B+C-A|, and TiBz-Al) can be obtained with good mechanical and conductive properties. The cermets can be machined by spark erosion into complicated forms. For smoothly changing shapes, such as a venturi nozzle, forming during the compaction process itself is a viable option. Moreover, shock waves can be used to fully densify combinations of materials that bear some ductility. One example is the combination of hydroxyapatite (90 vol%) with a polymer, which can be bonded with conservation of the properties of the constituents. This is a confirmation of the "cold" characteristic of the process, which could be used advantageously in other fields such as for powder coating purposes.
TNO Identifier
130465
Publisher
TNO
Source title
9th CIMTEC, World Ceramics Congress & Forum on New Materials, Florence, Italy, 14-19 June 1998
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