By P. J. van Westen (auth.), H. Kröckel, M. Merz, O. Van Der Biest (eds.)

The ecu Colloquium on Ceramics in complicated power expertise handled structural, mechanical, thermo-physical, chemical and electrical/electronics elements of ceramics, as applicants fabrics in complicated strength conversion structures. The technical programme integrated the presentation of twenty-two invited papers. The Colloquium used to be concluded by means of a panel dialogue which used to be preceeded through a presentation at the Ceramic Fabrication. For comfort, papers and discussions are prepared within the comparable method as they have been offered on the Colloquium, by way of the conclusions drawn by way of the panel participants. The editors desire to exhibit their gratitude to the authors for the practise and the presentation in their papers and to the Colloquium members for delivering their dialogue contributions. additionally they recognize the dear contributions to the making plans and realisation of the Colloquium made via the representatives of many of the sponsoring and co-sponsoring enterprises. the superb assistance of the Colloquium dialogue classes exercised through the consultation chairmen is extremely preferred in addition to the efforts of the panel contributors to organize the conclusions from the Colloquium periods. The contributions of all others which guaranteed a winning Colloquium from which those complaints developed are gratefully preferred. In a Post-Colloquium Workshop a couple of specialists mentioned effects bought from the Colloquium and pointed out parts warranting destiny R&D efforts. The conclusions drawn from the Workshop are annexed to those complaints. The Editors. ix Welcome and starting P.J. van Westen, C.E.C., D.G. XII, J.R.C., Petten Establishment.

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Additional info for Ceramics in Advanced Energy Technologies: Proceedings of the European Colloquium held at the Joint Research Centre, Petten Establishment, Petten, The Netherlands, 20–22 September 1982

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Em:) \ "'-. p . 56 g / em' ' \. Q, I Fig. 000 Strength Behaviour of Reaction Bonded Si3N4 after Annealing NON OXIDE CERAMICS (Silicon Carbide. Silicon Nitride. Sialon) E. Gugel Annawerk Keramische Betriebe GmbH D-8633 Roedental SYNOPSIS The non-oxide ceramic materials belong to the latest developments in the field of materials technology and this development has certainly not come to an end yet. They find increasing use in applications especially to solve materials problems. Because of their most interesting profile of mechanical, thermal and chemical properties we can consider them as an already settled new group of materials that stand at the beginning of a bright future.

1700 - 1 BOO DC AIN ~ B ZOOO - Z100 °c Sialon + B, C 5 5 .... o Z100 - 2200 DC 1700 _ 1900 DC R [ C R Y 5 1 A l l I l --- I " C 2)00 _ 2500 DC TABLE 2 Main Factors for Production of ReactionBonded Silicon Nitride (RBSN). ORIGIN: (Chemical/physical background) EFFECT: (Pro(luct/Properti es) INFLUENCES: (Raw Material/Technology) Grain size Reaction kinetics Microstructure Exothermic heat Density/Porosity Contaminations Volume increase Pore size distribution Additives Homogeneity Shaping method Local inhomogeneities Green density Residual silicon Wall thickness Unreacted cores Sintering technology Single great pores Reaction gas Strength / Dimensional Oxidation stahility Additives Flow rate 41 TABLE 3 Main Factors for Production of ReactionSintered Silicon Carbide (SiSiC).

Gugel, G. Leimer: Ber. Dt. Keram. , 1977, 5q, q, 116-117. 15 E. Gugel, N. Hauck, 0. W. Florke: Ber. Dt. Keram. , 1979, 56, 1, 10-lq. 16 J. A. Mangels: Automotive Propulsion Systems, 1980, 5, 500-51q. 17 K. M. Taylor: Materials and Methods, 1956, qq, 92-95. 18 C. W. Forrest, P. Kennedy, J. V. Shennan: Special Ceramics, 1972, 5, 99. 19 E. Gugel, G. Leimer, H. Colert, G. Gratwohl, F. Thlimmler: Statusseminar: Keramische Komponenten fur Fahrzeug-Gasturbinen II, 1981, q73-q98. 20 G. Leimer, E. Gugel: Zeitschrift fur Metallkunde, 1975, 66, H.

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