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Open cell polymer derived ceramic foams were prepared by a self-foaming process of a filler loaded poly(silsesquioxane) and subsequent pyrolysis at 1000uC in nitrogen atmosphere. A 1 : 1 mixture by weight of elemental Si and SiC was introduced as particulate filler. Foam samples without and with addition of a small amount (1 . 5 wt-% ) of Cu 2 O were prepared. Open cell ceramic foams with average cell diameter of 0 . 5-1 . 5 mm, compressive strength of up to 3 MPa and porosity of up to 90% were used as supports for direct crystallisation of MFI type zeolite under partial dissolution/recrystallisation of the ceramic foam. The partial transformation of the Si-O-C based foam material by hydrothermal crystallisation at 150uC for 0-96 h resulted in a well distributed zeolite coating with excellent adhesion on the foam surface. Characterisation of the zeolite/ceramic foam composites was carried out by XRD measurements in order to determine the amount of zeolite in the composite. 29 Si MAS NMR experiments were conducted to investigate the influence of Cu 2 O addition on the crystallisation behaviour.

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The knowledge of the elastic properties of a material is essential for the purpose of designing constructive parts or simulating their behaviour by finite element calculations. In particular at high temperatures it is difficult to measure these elastic properties for porous materials – applied e.g. as shock absorbers – and for anisotropic composites – applied in aerospace technologies. The paper presents a method, which is capable to obtain the elastic moduli in a wide temperature range.

Calcium phosphate bioceramics with an interconnective pore structure were produced by foaming of hydroxyapatite and methyl phenyl poly(silsequioxane) melts in the temperature range between 250 °C and 310 °C. The cellular structure of the resulting porous bodies were controlled by foaming parameters and filler load. A porosity of up to 92 % was achieved by decreasing the HAfiller amount and increasing the foaming temperature. Subsequent pyrolysis in air at temperatures of 900 °C and 1100 °C resulted in macroporous foams composed of HA and HA/b-TCP, respectively. The porous bodies with tailorable structure and composition are of interest for bone tissue engineering scaffolds and orthopedic implants.