Effect of Cristobalite Content on Physical, Dielectric Constant, and Bending Strength of Fused Silica Ceramics Formed by Slip Casting Method

Document Type : Original Research Article


1 Instructor, Department of Materials Engineering, Faculty of Engineering, University of Malayer, Malayer, Hamedan, Iran

2 Assistant Professor, Department of Materials Engineering, Faculty of Engineering, University of Malayer, Malayer, Hamedan, Iran


Fused silica ceramics are widely used in electronics and aerospace industries. In the present study, 70 µm of fused silica powder was milled to 10 µm through fast milling. The appropriate slurry was prepared for slip casting with the powder-to-water ratio of 80:20. After drying the specimens, the samples were sintered at different temperatures of 1100 °C to 1400 °C. The density increased upon increasing the temperature from 1.79 to 1.98 g/cm3. The phase transformation of the samples was investigated using XRD. The structure of the samples was analyzed using FTIR, and their microstructure was examined using a Field Emission Scanning Electron Microscope (FESEM). The bending strength of the samples was measured using the three-point method. According to the results, the cristobalite phase increased upon increasing the sintering temperature. The best flexural strength value (48.7 MPa) was obtained for the sample sintered at 1300 °C. The dielectric constants of the fused silica ceramics were about 3-3.8 in the frequency range of 8 to 12 GHz.


Main Subjects

  1. Jeshrun Shalem, M., Devaraju, A., Karthik, K., “Synthesis and Characterization of Functionally Graded Ceramic Material for Aerospace Applications”, In Reddy A., Marla D., Simic M., Favorskaya M., Satapathy S. (eds.), Intelligent Manufacturing and Energy Sustainability. Smart Innovation, Systems and Technologies, vol 169, Springer, Singapore, (2020), 483-488. https://doi.org/10.1007/978-981-15-1616-0_47
  2. Okaji, M., Yamada, N., Nara, K., Kato, H., “Laser interferometric dilatometer at low temperatures: application to fused silica SRM 739”, Cryogenics, Vol. 35, No. 12, (1995), 887-891. https://doi.org/10.1016/0011-2275(95)96887-R
  3. Yoldas, B. E., Partlow, D. P., “Formation of broad band antireflective coatings on fused silica for high power laser applications”, Thin Solid Films, Vol. 129, No. 1-2, (1985), 1-14. https://doi.org/10.1016/0040-6090(85)90089-6
  4. Chen, X., Liu, C., Zheng, W., Han, J., Zhang, L., Liu, C., “High strength silica-based ceramics material for investment casting applications: Effects of adding nanosized alumina coatings”, Ceramics International, Vol. 46, No. 1, (2020), 196-203. https://doi.org/10.1016/j.ceramint.2019.08.248
  5. Cui, H., Zhong, R., Wang, X., Li, Z., Ling, Y., Yu, C., Chen, H., “Reassessment of the zircon Raman spectroscopic pressure sensor and application to pressure determination of fused silica capillary capsule”, Ore Geology Reviews, Vol. 122, (2020), 103540. https://doi.org/10.1016/j.oregeorev.2020.103540
  6. Deng, B., Shi, Y., Yuan, F., “Investigation on the structural origin of low thermal expansion coefficient of fused silica”, Materialia, Vol. 12, (2020), 100752. https://doi.org/10.1016/j.mtla.2020.100752
  7. Duan, W., Yang, Z., Cai, D., Zhang, J., Niu, B., Jia, D., Zhou, Y., “Effect of sintering temperature on microstructure and mechanical properties of boron nitride whisker reinforced fused silica composites”, Ceramics International, Vol. 46, No. 4, (2020), 5132-5140. https://doi.org/10.1016/j.ceramint.2019.10.257
  8. Liu, S. H., Chen, P., Xu, D. H., Yuan, Q. D., “Effects of sintering temperature on phases, microstructures and properties of fused silica ceramics”, In Bao Y., Jiang D., Gong J. (eds.), Key Engineering Materials, 726, Trans Tech Publications Ltd., Switzerland, (2017), 399-403, https://doi.org/10.4028/www.scientific.net/kem.726.399
  9. Romashin, A. G., Pivinskii, Y. E., “Properties of fused silica ceramics”, Refractories, Vol. 9, No. 9-10, (1968), 590-595. https://doi.org/10.1007/bf01283506
  10. Ganesh, I., Mahajan, Y. R., “Slip-Cast Fused Silica Radomes for Hypervelocity Vehicles: Advantages, Challenges, and Fabrication Techniques”, Handbook of Advanced Ceramics and Composites: Defense, Security, Aerospace and Energy Applications, (2020), 251-317. https://doi.org/10.1007/978-3-319-73255-8_55-1
  11. Richerson, D. W., Lee, W. E., Modern Ceramic Engineering: Properties, Processing, and Use in Design, 4th, CRC press, Taylor & Francis Group: Boca Raton, FL, USA, (2018). https://doi.org/10.1201/9780429488245
  12. Talimian, A., Galusek, D., “Aqueous slip casting of translucent magnesium aluminate spinel: Effects of dispersant concentration and solid loading”, Ceramics International, Vol. 45, No. 8, (2019), 10646-10653. https://doi.org/10.1016/j.ceramint.2019.02.134
  13. Xu, Y., Mao, X., Fan, J., Li, X., Feng, M., Jiang, B., Lei, F., Zhang, L., “Fabrication of transparent yttria ceramics by alcoholic slip-casting”, Ceramics International, Vol. 43, No. 12, (2017), 8839-8844. https://doi.org/10.1016/j.ceramint.2017.04.017
  14. Heaney, P. J., “Chapter 1. Structure and chemistry of the low-pressure silica polymorphs”, Silica: Physical Behavior, Geochemistry, and Materials Applications, Heaney, P. J., Prewitt, C. T., Gibbs, G. V. (eds.), Berlin, Boston: De Gruyter, (2018), 1-40. https://doi.org/10.1515/9781501509698-006
  15. Carpenter, M. A., Salje, E. K., Graeme-Barber, A., Wruck, B., Dove, M. T., Knight, K. S., “Calibration of excess thermodynamic properties and elastic constant variations associated with the alpha ↔ beta phase transition in quartz”, American Mineralogist, Vol. 83, No. 1-2, (1998), 2-22. https://doi.org/10.2138/am-1998-1-201
  16. Fanderlik, I. ed., Silica Glass and Its Application, Elsevier, Amsterdam, The Netherlands, (2013).
  17. Lakshtanov, D. L., Sinogeikin, S. V., Bass, J. D., “High-temperature phase transitions and elasticity of silica polymorphs”, Physics and Chemistry of Minerals, Vol. 34, No. 1, (2007), 11-22. https://doi.org/10.1007/s00269-006-0113-y
  18. Dai, Y., Yin, Y., Xu, X., Jin, S., Li, Y., Harmuth, H., “Effect of the phase transformation on fracture behaviour of fused silica refractories”, Journal of the European Ceramic Society, Vol. 38, No. 16, (2018), 5601-5609. https://doi.org/10.1016/j.jeurceramsoc.2018.08.040
  19. Niu, S. X., Cai, S., Tang, D. Z., Liu, X. G., Gu, G. H., Yao, J. S., Li, X., Wang, L. L., Fan, H. N., “Investigation on nano-fused silica in silica-based ceramic cores for investment casting”, In Han, Y., Zhang, Q., Jiang, B. (eds.), Materials Science Forum, 816, Trans Tech Publications Ltd., Switzerland, (2015), 266-270. https://doi.org/10.4028/www.scientific.net/msf.816.266
  20. ASTM F417-78(1996), Test Method for Flexural Strength (Modulus of Rupture) of Electronic-Grade Ceramics (Withdrawn 2001), ASTM International, West Conshohocken, PA, (1996). https://doi.org/10.1520/F0417-78R96
  21. Cullity, B. D., Elements of X-ray Diffraction, Addison-Wesley Publishing Company Inc., Boston, (1956). https://www.eng.uc.edu/~beaucag/Classes/XRD/elementsofxraydi030864mbp.pdf
  22. Yuchang, Q., Qinlong, W., Fa, L., Wancheng, Z., “Temperature dependence of the electromagnetic properties of graphene nanosheet reinforced alumina ceramics in the X-band”, Journal of Materials Chemistry C, Vol. 4, No. 22, (2016), 4853-4862. https://doi.org/10.1039/C6TC01163B
  23. Wan, W., Huang, C. E., Yang, J., Zeng, J., Qiu, T., “Effect of sintering temperature on the properties of fused silica ceramics prepared by gelcasting” Journal of Electronic Materials, Vol. 43, No. 7, (2016), 2566-2572 (2014). https://doi.org/10.1007/s11664-014-3112-7
  24. Provancher, W., Ghosh, A. K., “High Temperature Mechanical Behavior of Nb5Si3/Nb Laminates”, MRS Online Proceedings Library, Vol. 364, (1994), 1071-1076. https://doi.org/10.1557/proc-364-1071
  25. Koike, C., Noguchi, R., Chihara, H., Suto, H., Ohtaka, O., Imai, Y., Matsumoto, T., Tsuchiyama, A., “Infrared spectra of silica polymorphs and the conditions of their formation”, The Astrophysical Journal, Vol. 778, No. 1, (2013), 60. https://doi.org/10.1088/0004-637x/778/1/60
  26. Richerson, D. W., Lee, W. E., Modern Ceramic Engineering: Properties, Processing, and Use in Design, 4th ed., CRC press, New York, USA, (2018). https://doi.org/10.1201/9780429488245
  27. Garbarz-Glos, B., Bąk, W., Budziak, A., Dulian, P., Lisińka-Czekaj, A., Czekaj, D., “The Application of the Mechanochemical Synthesis for the Preparation of Advanced Ceramics Based on Barium Titanate”, Archives of Metallurgy and Materials, Vol. 65, No. 4, (2020) 1391-1396. https://doi.org/24425/amm.2020.133705