Due to promising results in literature, particle composites in the range 0–100 percent SiC were evaluated. Focusing on high-temperature properties, mainly was used as sintering additive. Consolidation occurred primarily by hot-pressing, sintering tests were performed for comparison. Besides short-term properties like strength, toughness etc., long-term properties like creep and oxidation behavior were determined. Results as a function of SiC-content and microstructure were discussed with respect to materials’ performance at high temperatures and possibilities of their production on a technical scale. [S0742-4795(00)00201-5]
Issue Section:Gas Turbines: Ceramics
Keywords:particle reinforced composites, silicon compounds, carbon compounds, nitrogen compounds, high-temperature effects, ceramics, hot pressing, sintering, creep testing, oxidation, crystal microstructure, fracture toughness testing, hardness testing
Woetting, G., Frassek, L., and Gugel, E., 1996, “New Developments on Silicon Nitride-Based Ceramics for High Temperature Applications,” Proceedings, 3rd Europ. Workshop on High Temperature Materials, ESA-WPP-104, pp. 40–45.
Klemm, H., Herrmann, M., and Schubert, Chr., Hermel, W., 1996, “Problems and Prospects of Silicion Nitride Materials for Applications at Temperatures above 1400°C,” Proceedings, 3rd Europ. Workshop on High Temperature Materials, ESA-WPP-104, pp. 32–39.
Influence of Grain-Boundary Phase Amount on Properties of Dense Si3N4,”
Hot-Isostatic Press Sintering and Properties of Silicon Nitride Without Additives,”
J. Am. Ceram. Soc.,
New Design Concept of Structural Ceramics—Ceramic Nanocomposites,”
J. Ceram. Soc. Jpn.,
Hermann, M., Rupp, E., Schubert, Ch., and Rendtel, A., 1998, “Preparation and Properties of Si3N4/SiC Nanocomposite Materials,” to be published in J. Am. Ceram. Soc.
Westerheide, R., Woetting, G., Schmitz, H. W., and Foitzik, A., 1997, “Economical Realization of the SiC/Si3N4-Nanocomposite Concept,” to be published in “Silicates Industriel,” Belgium.
Silicon Nitride Based Ceramic Nanocomposites,”
J. Am. Ceram. Soc.,
VAMAS Round Robin on Fracture Toughness Measurement of Ceramic Matrix Composites, Final Report 32, Sept. 1997, Japan Fine Ceramic Center, Nagoya, ISSN 1016–2186.
Klemm, H., Herrmann, M., and Schubert, Chr., 1997, “High Temperature Oxidation of Silicon Nitride Based Ceramic Materials,” presented at 6th Int. Conf. on Ceramic Materials and Components for Engines, Arita, Japan, 1997.
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