Skip to main content

Advertisement

Log in

Thermal Characteristics of Fused Silica Ceramic Waste and its Application in Casting Jewelry

  • Published:
Refractories and Industrial Ceramics Aims and scope

Cristobalite SiO2 can be obtained from fused silica ceramic wastes formed at factories that make polycrystalline silicon, where fused silica is converted to cristobalite during the production of polycrystalline ingots. High-purity cristobalite powder is obtained by grinding these wastes. A study was made of the coefficient of linear thermal expansion of molds which are composed of cristobalite with a gypsum binder and are used to make jewelry. It was established that the thermal expansion which takes place during the transition to the cristobalite phase can effectively compensate for the shrinkage which the gypsum undergoes in the temperature range from 200 to 400°C. Experiments involving the casting of a copper alloy showed that the use of cristobalite can improve the thermal performance of molds employed in the production of jewelry.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6

Similar content being viewed by others

References

  1. S. Stevens, R. Hand, and J. Sharp, “Polymorphism of silica,” Mater. Sci., No. 32, 2929 – 2935 (1997).

  2. M. Dorian and G. Subrata, “The phase transition in cristobalite,” Phys. Chem. Minerals, No. 17, 554 – 562 (1991).

  3. M. Mohammed, G. Sylvain, and G. Hallvard, “Thermo-mechanical analysis of the ingot-crucible contact during multicrystalline silicon ingot casting,” J. Cryst. Growth, No. 318, 269 – 274 (2011).

    Google Scholar 

  4. Y. Kim, S. Kim, H. Park, et al., “Effect of cristobalite and quartz on the properties of gypsum bonded investment,” Mater. Sci. Technol., No. 24, 143 – 144 (2008).

    Google Scholar 

  5. S. Patrizio, M. Giampiero, M. Gabriel, et al., “Advances in jewellery microcasting,” Thermochimica Acta, No. 419, 195 – 204 (2004).

    Google Scholar 

  6. K. Wakasa, Y. Ikeda, Y. Yoshida, et al., “Silica investment prepared for dental purposes: effect of cristobalite content on mechanical properties,” J. Mater. Sci. Lett., No. 12, 1908 – 1910 (1993).

  7. A. Kono, T. Losoda, and T. Fusayama, “Heating rate of a gypsum investment related to crack formation,” J. Dent. Res., No. 45, 1419 – 1420 (1966).

    Google Scholar 

  8. S. Shovaf, B. Champagnon, and G. Panczer, “The quartzcristobalite transformation in heated chert rock composed of micro- and crypto-quartz by micro-Raman and FT-IR spectroscopy methods,” J. Therm. Analysis, No. 50, 203 – 213 (1997).

    Google Scholar 

  9. T. Mori, “Study of gypsum-bonded casting investments,” Aust. Dent. J., No. 38, 220 – 224 (1993).

  10. F. Aghajani, Z. Hasratiningsih, and T. Mori, “Gypsum-bonded investment and dental precision casting (IV) transformation of III-CaSO4 to II-CaSO4,” Dent. Mater. J., No. 23, 373 – 378 (2004).

    Google Scholar 

  11. A. Wereszczak, K. Breder, and M. Ferber, “Dimensional changes and creep of silica core ceramics used in investment casting of superalloys,” J. Mater. Sci., No. 37, 4235 – 4245 (2002).

    Google Scholar 

Download references

This research has been conducted with the support of the Key Laboratory of Solid Waste Treatment and Resource Recycling (at the Southwest University of Science and Technology) and the Ministry of Education of China. It is a project of the Education Department of Guangzhou Province (10B002) and the National Science Foundation of China (No. 51102100).

Author information

Authors and Affiliations

Authors

Additional information

Translated from Novye Ogneupory, No. 12, pp. 30 – 32, December, 2013.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Zhou, Y., Shen, K. & Zeng, Q. Thermal Characteristics of Fused Silica Ceramic Waste and its Application in Casting Jewelry. Refract Ind Ceram 54, 490–493 (2014). https://doi.org/10.1007/s11148-014-9639-6

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11148-014-9639-6

Keywords

Navigation