Bruno Ceron-Nicolat, Friedrich Wolff, Andrea Dakkouri-Baldauf, Tobias Fey, Helmut Münstedt and Peter Greil Graded Cellular Ceramics from Continuous Foam Extrusion Advanced Engineering Materials 14
Cylindrical SiOC foam filaments with a radial gradient in pore cell size were processed by continuous extrusion foaming of a methyl polysilsesquioxane. After pyrolysis (800 to 1400 °C) the stabilized polymer gradient foams were converted into closed cell SiOC ceramic gradient foams. A superior compressive strength of 9 MPa and a Young's modulus of 7 GPa at a relative density of 0.18 were measured at an optimum pyrolysis temperature of 1000 °C.
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