Residual Thermal Stress of Spinell Based-Ceramic Infiltrated with Glass Rich in Lanthanum

Abstract:

Ceramic composites developed for glass infiltration in ceramic substract has as main advantage the reduction of fabrication temperatures of ceramic parts compared to the solid state sintering. In this work, spinell based-ceramics infiltrated with glass rich in lanthanum, aiming applications in dental ceramics, were developed and studied. Pre-sintered spinell substrates with porosity of 10, 15 and 20% were infiltrated with glass at temperature 1120°C-120min, using heating and cooling rate of 10°C/min. The composites present relative density superior 98.6% in every investigated condition, and X-ray diffraction indicated the phase MgAl₂O₄, as unique crystalline phase detected. Hardness Vickers varying between 850-1000HV and fracture toughness varying between 3.0 to 4.5MPa.m^1/2 were obtained for composites with variation of intergranular phase quantity. The evaluation of residual thermal stress indicates that compressive thermal stress are generated in every composition varying from 70-90MPa, for compositions containing between 10 to 20% of infiltrated glass, respectively. Theoretical calculations indicate that the excellent quantity of inter-granular phase infiltrated must be 17%, for obtaining better resistance to crack propagation in this material.

• Periodical: Advances in Science and Technology (Volume 96)
• Pages: 67-72
• DOI: https://doi.org/10.4028/www.scientific.net/AST.96.67
• Online since: October 2014
• Authors: Paula Cipriano da Silva*, Claudinei dos Santos
• Keywords: Characterization, Dental Ceramics, Mechanical Property, Spinel

References

[1] K. J. Anusavice, Phillips Materiais Dentários, 11ª edição, Elsevier Editora Ltda, Rio de Janeiro, (2005).

[2] M. Guazzato, M. Albakry, S. P. Ringer, M. V. Swain, Strength, fracture toughness and microstructure of a selection of all-ceramic materials. Part II. Zirconia-based dental ceramics, Dental Materials, 20 (5) (2004) 449-456.

DOI: 10.1016/j.dental.2003.05.002

[3] D. -J. Kim, M. -H. Lee, D. Y. Lee, J. -S. Han, Mechanical Properties, Phase Stability, and Biocompatibility of (Y, Nb)-TZP/Al2O3 Composite Abutments for Dental Implant, J. Biomed Mater Res, 2000 53 (4) 438-443.

DOI: 10.1002/1097-4636(2000)53:4<438::aid-jbm19>3.0.co;2-3

[4] X. -J. Sheng, H. Xu, Z. -H. Jin, Y-L. Wang, Preparation of glass-infiltrated 3Y-TZP/Al2O3/glass composites, Materials Letters, 58 (11) (2004) 1750-1753.

DOI: 10.1016/j.matlet.2003.10.062

[5] W.D. Wolf, K.J. Vaidya, L.F. Francis, J. Am. Ceram. Soc. 79 (7) (1996) 1769.

[6] S. -J. Lee, W.M. Kriven, J. Am. Ceram. Soc. 80 (8) (1997) 2141.

[7] J. -M. Tang, Y. -L. Zhang, S. -X. Zhang, J. Am. Ceram. Soc. 82 (6) (1999) 1592.

[8] W. D. Wolf, L.F. Francis, C. -P. Lin, J. Am. Ceram. Soc. 76 (10) (1993) 2691.

[9] K. Niihara, R. Moreno, D.P.H. Hasselman, Evaluation of KIC of brittle solids by the indentation method with low crack-to-indent ratios. J Mat. Sci. Letters (1) (1982), 13-16.

DOI: 10.1007/bf00724706

[10] J. L. Shi, Z. L. Lu, J. K. Guo, Model analysis of boundary residual stress and its effect on toughness in thin boundary layered yttria-stabilized tetragonal zirconia polycrystalline ceramics, J Mat Res, 15 (3) (2000) 727-732.

DOI: 10.1557/jmr.2000.0105

[11] J. L. Shi, L. Li, J .K. Guo, Boundary stress and its effect on toughness in thin boundary layered and particulate composites: model analysis and experimental test on T-TZP based ceramic composites, J Eur Ceram Soc, 18 (1998) 2035-(2043).

DOI: 10.1016/s0955-2219(98)00157-5

[12] A. A. C. Lourenço, Produção, processamento e ceracterização de espinélio para aplicação odontológica, MsC Dissertation, UFRJ-Brazil, 79p. (2008).

[13] J.L. Shi, Z.L. Lu, and J.K. , Guo, Model analysis of boundary residual stress and its effect on toughness in thin boundary layered yttria-stabilized tetragonal zirconia polycrystalline ceramics; J Mat Res, 15 (3) (2000) 727-732.

DOI: 10.1557/jmr.2000.0105

[14] M. Taya, S. Hayashi, A.S. Kobayashi, H.S. Yoon, Toughening of a particulate-reinforced ceramic-matrix composite by thermal residual stress., J Am Ceram Soc, 73 (5) (1990) 1382-1391.

DOI: 10.1111/j.1151-2916.1990.tb05209.x

[15] Y. -H Sun, Y-F Zhanga, J-K. Guo, Microstructure and bending strength of 3Y-TZP ceramics by liquid-phase sintering with CAS addition, Ceramics International 29 (2003) 229-232.

DOI: 10.1016/s0272-8842(02)00097-4

[16] X.W. Huang, S.W. Wang, X.X. Huang, Microstructure and mechanical properties of ZTA fabricated by liquid phase sintering , Ceramics International 29 (2003) 765-769.

DOI: 10.1016/s0272-8842(02)00228-6

[17] C. Santos, R.C. Souza, A.F. Habibe, L.D. Maeda, M.J.R. Barboza, C.N. Elias, Mechanical properties of Y-TPZ ceramics obtained by liquid phase sintering using bioglass as additive, Mat Sci Eng A, 485, (2008) 422-427.

DOI: 10.1016/j.msea.2007.06.009