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Phase transition and thermal expansion coefficient of leucite ceramics with addition of SiO2

Published online by Cambridge University Press:  31 January 2011

Juan Paulo Wiff ,
Yoshiaki Kinemuchi ,
Shimako Naito ,
Ayako Uozumi  and
Koji Watari
Yoshiaki Kinemuchi*
Affiliation:
National Institute of Advanced Industrial Science and Technology (AIST), Advanced Manufacturing Research Institute, Shimoshidami, Moriyama-ku, Nagoya 463-8560, Japan
Koji Watari
Affiliation:
National Institute of Advanced Industrial Science and Technology (AIST), Advanced Manufacturing Research Institute, Shimoshidami, Moriyama-ku, Nagoya 463-8560, Japan
*
a) Address all correspondence to this author. e-mail: y.kinemuchi@aist.go.jp
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Abstract

In this work, the influence of SiO2 additions in leucite ceramics on the bulk linear thermal expansion coefficient (TEC) especially during the phase transition, has been studied. Thermal expansion and x-ray diffraction measurements at high temperatures were carried out to characterize the tetragonal-cubic phase transition. TEC for reference and SiO2-added leucite samples exhibited similar behavior as a function of temperature. Before and after the phase transition, the TEC values were similar to those observed in non-SiO2-added samples, whereas during the phase transition, a maximum TEC value was observed and it tends to decrease as the SiO2 addition increases. This behavior could be caused by the formation of an intermediate phase with an extremely high TEC (70 × 10–6 °C−1) during the phase transformation. Furthermore, the results suggest that as the intermediate phase is partially suppressed via SiO2 addition, the cubic phase can be partially stabilized at temperatures as low as 200 °C.

Keywords

CeramicPhase transformation
Type
Articles
Information
Journal of Materials Research , Volume 24 , Issue 6 , June 2009 , pp. 1989 - 1993
Copyright
Copyright © Materials Research Society 2009

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References

1Hautaniemi, J. and Hero, H.: Effect of crystalline leucite on porcelain bonding on titanium. J. Am. Ceram. Soc. 74, 1449 (1991).CrossRefGoogle Scholar
2Mackert, J. and Evans, A.: Quantitative x-ray diffraction determination of leucite thermal instability in dental porcelain. J. Am. Ceram. Soc. 74, 450 (1991).CrossRefGoogle Scholar
3Ota, T., Takahashi, M., and Yamai, I.: High-thermal-expansion poly-crystalline leucite ceramic. J. Am. Ceram. Soc. 76, 2379 (1993).CrossRefGoogle Scholar
4Sheu, T., O'Brien, W., Rasmussen, S., and Tien, T.: Mechanical properties and thermal expansion behavior in leucite containing materials. J. Mater. Sci. 29, 125 (1994).CrossRefGoogle Scholar
5Maixner, J., Klouzkova, A., Mrazova, M., and Kohoutkova, M.: X-ray analysis in leucite systems. Z. Kristallogr. Suppl. 26, 531 (2007).CrossRefGoogle Scholar
6Li, X. and Shaw, L.: Formation of leucite-free zone in laser densified dental porcelains. Mater. Sci. 61, 3946 (2007).Google Scholar
7Klouzkova, A., Mrazova, M., and Kohoutkova, M.: Synthesis of partially stabilized leucite. J. Phys. Chem. Solids 68, 1207 (2007).CrossRefGoogle Scholar
8Novotna, M. and Maixner, J.: X-ray powder diffraction study of leucite crystallization. Z. Kristallogr. Suppl. 23, 455 (2006).CrossRefGoogle Scholar
9Taylor, D. and Henderson, C.: The thermal expansion of the leucite group of minerals. Am. Mineral. 53, 1476 (1968).Google Scholar
10Hirao, K., Soga, N., and Kunugi, M.: Thermal expansion and structure of leucite-type compounds. J. Phys. Chem. 80, 1612 (1976).CrossRefGoogle Scholar
11Newton, H., Hayward, S., and Redfern, S.: Order parameter coupling in leucite: A calorimetric study. Phys. Chem. Miner. 35, 11 (2008).CrossRefGoogle Scholar
12Grögel, T., Boysen, H., and Frey, F.: Phase transition and ordering in leucite. Acta Crystallogr. S40, C–256 (1984).Google Scholar
13Henderson, C.: The tetragonal-cubic inversion in leucite solid solutions. Prog. Exp. Petrol. 50, 50 (1981).Google Scholar
14Mazzi, F., Galli, E., and Gottardi, G.: Crystal structure of tetragonal leucite. Am. Mineral. 61, 108 (1976).Google Scholar
15Rodriguez-Carvajal, J.: Recent advances in magnetic structure determination by neutron powder diffraction. Z. Phys. B: Condens. Matter 192, 55 (1993).CrossRefGoogle Scholar
16Powder Diffraction Files: The International Centre for Diffraction, Swarthmore, PA, 2004.Google Scholar
17Schairer, J. and Bowen, N.: Melting relations in the system Na2OAl2O3-SiO2 and K2O-Al2O3-SiO2. Am. J. Sci. 245, 193 (1947).CrossRefGoogle Scholar
18Henry, N. and Lonsdale, K.: International Tables for X-ray Crystallography (The International Union of Crystallography and The Kynoch Press Publishers, Birmingham, AL, 1965).Google Scholar