G. Ziegler et al./Composites: Part A 30(1999)411-417 z-direction 00 800 Temperature°Cl erature Fig 8. Thermal expansion of 2D C/SiCN composites as a function of fiber orientation(materials P5).(a)Configuration 0.(b)Configuration 6(see Table 1) Tested laminate configurations with respect to minimized x-y anisotropy of Lamination. Orientation of the individual Config. o 0°0°90°0°/90°10°190° 5-1550930456 Confi 30°0°90°60°/30°0°/30°60% Config. 3 -80 Config. 4 0°30°60°/90°/1201150°0°30 100 60°90°120%/150° Config. 5 Config. 6 Fig 9. Oxidation behavior of the C/SICN composite and the individual 5°0°90°145%-45° Config. 7 0°45°/90°-45°0°45°90一 45°0°14591907-45° Config. 8 0-90°459-45°90°0° Config. 9 0-90°145-45°/90°10° 0°0°°0°0°0°0°0°90°90° 90°90°90°/90°/90°90° 015°30°/4560°75°90°/105 8 120%/135/150/165%180°/195° 210°/225° quence, as has been shown on 0/90 and other prepregs Siliconization of the C/SiCN composites for improved prop- the s possible without damaging the fibers depending on Acknowledgements Dipl. Ing. B. Rothe is gratefully acknowledged for providing the optical microscopy work Fig. 10. Oxidized C/SiCN composite.sequence, as has been shown on 08/908 and other prepregs. Siliconization of the C/SiCN composites for improved prop￾erties is possible without damaging the fibers, depending on the fiber arrangement. Acknowledgements Dipl. Ing. B. Rothe is gratefully acknowledged for providing the optical microscopy work. 416 G. Ziegler et al. / Composites: Part A 30 (1999) 411–417 Fig. 9. Oxidation behavior of the C/SiCN composite and the individual components. Table 1 Tested laminate configurations with respect to minimized x–y anisotropy of CTEs Laminatconf. Orientation of the individual laminates Config. 0 08/908/08/908/08/908/08/908 Config. 1 08/158/ 2 158/308/ 2 308/458/ 2 458/608/ 2 608/758/ 2 758/908 Config. 2 308/08/908/608/308/08/308/608/ 908/08/308 Config. 3 08/308/608/908/08/308/608/908/08/ 308/608/908 Config. 4 08/308/608/908/1208/1508/08/308/ 608/908/1208/1508 Config. 5 08/08/08/308/308/308/608/608/608/ 908/908/908 Config. 6 08/908/458/ 2 458/08/908/458/ 2 458/08/908/458/ 2 458 Config. 7 08/458/908/ 2 458/08/458/908/ 2 458/08/458/908/ 2 458 Config. 8 08/ 2 908/458/ 2 458/908/08/ 1358/458/08/ 2 908/458/ 2 458/ 908/08/1358/458 Config. 9 08/ 2 908/458/ 2 458/908/08/ 1358/458/458/1358/08/908/ 2 458/ 458/ 2 908/08 Config. 10 08/08/08/08/08/08/08/08/908/908/ 908/908/908/908/908/908 Config. 11 08/158/308/458/608/758/908/1058/ 1208/1358/1508/1658/1808/1958/ 2108/2258 Fig. 8. Thermal expansion of 2D C/SiCN composites as a function of fiber orientation (materials P5). (a) Configuration 0. (b) Configuration 6 (see Table 1). Fig. 10. Oxidized C/SiCN composite