This publication collects a few of papers awarded on the very winning Symposium "Polymer Derived Ceramics and Composites" within the framework of the eighth Pacific Rim convention on Ceramic and Glass expertise. There, over 70 researchers from world wide mentioned their most recent ideas over 4 complete days. It covers all of the major points of interdisciplinary learn and improvement within the box of Polymer-Derived-Ceramics, from the precursor synthesis and features to the polymer-to-ceramic conversion, from processing and shaping of preceramic polymers into ceramic parts to their microstructure on the nano- and micro-scale, from their homes to their so much proper functions in several fields.Content:

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Since it is well-known that CO gas is actively evolved from cured Si-C-0 polymer in the same temperature range, it is accepted that the main cause of the mass loss of the fibers in the temperature range is CO gas evolution [7]. Since the surface area of these fibers were rapidly gained (Figure 3), it is conceivable that the increase of surface areas has deep relationship with the gas evolution. In the case of PS15-E and PS30-E, oxygen in curing was not supplied to the fibers, and there were no remarkable pores and mass loss in spite of heating at 1673K which is the best temperature for making porous ceramics fiber from PS15-G.

10, (5), 277 (1998). 77 T. Gullion, Measurement of Heteronuclear Dipolar Interactions by Rotational-Echo, DoubleResonance Nuclear Magnetic Resonance Magn. Reson. Rev. 17, (2), 83 (1997). 78 C. P. Jaroniec, B. A. Tounge, C. M. Rienstra, J. Herzfeld, R. G. Griffin, Recoupling of heteronuclear dipolar interactions with rotational-echo double-resonance at high magic-angle spinning frequencies J. Magn. Reson. 146, (1), 132 (2000). 79 T. Gullion, A. J. Vega, Measuring heteronuclear dipolar couplings for I = 1/2, S > 1/2 spin pairs by REDOR and REAPDOR NMR Prog.

2 with the scaled T(r) of silica glass15. 5 Â. j (i-j: Si-C, Si-O, 34 ■ Advances in Polymer Derived Ceramics and Composites Intermediate-Range Order in Polymer-Route Si-C-0 Fibers by High-Energy X-Ray Diffraction Si-Si, C-O, C-C, O-O) those peaks can be attributed to individual atomic pairs. 8 0 Fig. 1 Total structure factors 1 2 Fig. 2 3 4,,. 6 Â in the T(r) of NL400 fibers (HTT = 1000, 1200 and 1400 °C) belongs to Si-O correlation comparing to the scaled T(r) of silica glass15. With the conventional X-ray diffraction the Si-0 peak is not observed separately due to the insufficient real-space resolution.

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