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Ferrosilicochromium‐Filled Polymer‐Derived Ceramics

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Abstract:

Rectangular green bodies fabricated from a granulated mixture of polymethylsilsesquioxane (PMS), ferrosilicochromium (FeSiCr), and SiC were cross‐linked in a warm press at 240°C under a pressure of 9 MPa. The samples were then pyrolyzed at 950°C and subsequently heat treated at 1275°C in N2 atmosphere at pressures up to 5 MPa. For the composites with 25 vol% FeSiCr, a total linear shrinkage of <7% was measured while the residual porosity decreased to 3%. A bending strength of ∼285 MPa, fracture toughness of ∼3.7 MPa m1/2, hardness of ∼9.5 GPa, and elastic modulus of ∼186 GPa were evaluated.

Document Type: Research Article

DOI: https://doi.org/10.1111/j.1744-7402.2011.02616.x

Affiliations: Department of Materials Science, Glass and Ceramics, Friedrich Alexander University Erlangen-Nuremberg, 5, 91058 Erlangen, Germany

Publication date: 2011-11-01

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