Coarse-Grained Ceramic Heat Shields Made by Pressure Slip Casting

Christos G. Aneziris1, Friederike Lange2, Holger Grote2, Nora Gerlach3

1 Institut für Keramik, Glas- und Baustofftechnik, TU Bergakademie Freiberg, 09596 Freiberg/Germany
2 Siemens AG Energy Sector, 45472 Mülheim an der Ruhr/Germany
3 Institut für Keramik, Glas- und Baustofftechnik, TU Bergakademie Freiberg, 09596 Freiberg/Germany

Revision 16.01.2015, 02.02.2015

Volume 7, Issue 2, Pages 101 - 104

Abstract

Pressure slip casting technology is a common manufacturing process in the silicate industry. The present study introduces a possibility for the production of carbon-free coarse-grained materials using this technology. At the beginning, the filtration behaviour of the slurries is studied in a CPF (compression permeability filtration) test cell. The specimens are ceramic heat shields manufactured by pressure slip casting and had to fulfil several requirements given by Siemens Power Generation. Ceramic heat shields are used as linings in gas turbine combustion chambers.

Keywords

pressure slip casting, heat shield, coarse-grained ceramics

References

[1] Segerer, H.: Das Keramische-Hochdruckgießen in der keramischen Industrie. Keram. Z. 40 (1988) [4] 235–238 [2] Jahn, P.; et al.: Druckschlickerguss Technischer Keramik. cfi/Ber. DKG 82 (2005) [13] 307–311 [3] Klippel, U.; Aneziris, C.G.; Metzger, A.: Shaped coarse grained refractories by pressure slip casting. Advanced Engin. Mater. 13 (2011) [1–2] 68–76 [4] Klein, G.: Druckgießen, in: Technische Keramik, Ed. W. Kollenberg, Essen 2004, 382–394 [5] Nürnberger, G.: Entwicklung und Einführung des Schlicker-Druckgießverfahrens in der Sanitärkeramik. Keram. Z. 40 (1988) [4] 227–232 [6] Betz, T.; et al.: Wichtige Parameter beim Schlickerdruckguß von Al2O3. cfi/Ber. DKG 74 (1997) [2] 101–105 [7] Aneziris, C.G.; et al.: Druckschlicker-Gießvorrichtung bzw. Verfahren zum Gießen eines Formteils, Int. Patent DE102008011820A1, 2009 [8] Funk, J.E.; Dinger, D.R.: Particle packing VI – applications of particle size distribution concepts. Interceram 43 (1994) [5] 350–353 [9] Ulbricht, J.; Burkhardt, K.: Über den Körnungsaufbau grobkeramischer feuerfester Werkstoffe. cfi/Ber. DKG 76 (1999) [4] D9–D12 [10] Alles, C.M.: Prozessstrategien für die Filtration mit kompressiblen Kuchen. Ph. D. thesis, Universität Fridericiana Karlsruhe, TH, 2000 [11] Fennelly, T.J.; Reed, J.S.: Compression permeability of AL2O3 cakes formed by pressure slip casting. J. Amer. Ceram. Soc. 55 (1972) 381– 383 [12] Lu, W.-M.; Huang, Y.-P.; Hwang, K.-J.: Stress distribution in a confined wet cake in the compression- permeability cell and its application. Powder Technology 97 (1998) 17–25

Copyright

Göller Verlag GmbH