Abstract
The direct joining of non-oxide ceramics is strongly influenced by the nature of the intergranular phase and consequently by the specific sintering additive system, as this affects the type, amount and viscosity of the intergranular phase.
Adhesion between two ceramic pieces depends on the tendency of the intergranular phase to move toward the interface and to fill in the surface roughness, i.e., it depends on the mobility of the atoms within the grain boundaries and triple junctions. Low mobility atoms and intergranular phase with high viscosity characterized by poor wetting of the ceramic grains will cause lower adhesion at the interface.
Microstructural evolution and fmal properties of the joints were studied for two different systems: hot pressed Si3N4 with Al2O3-Y2O3 or Y2O3-La2O3 as sintering additives and SiC with Al2O3-Y2O3; pressures up to 40 MPa and temperatures up to 1750°C were used for the joining processes.
The microstructure that forms at the interface is related to the mechanisms governing the mass transport of the involved phases and is affected by capillary forces, applied pressure, refractoriness of the intergranular phase and by the chemical composition of the principal phase. Therefore these features must be carefully evaluated and the joining conditions selected in order to produce successful joints with flexural strength values approaching those of the as-sintered material.
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References
Tabata H., Kanzaki S. and Nakamura M., (1983) Solid State Joining of Silicon Nitride Ceramics, Proc. of International Symposium on Ceramic Components for Engines, Japan, 387–393.
Nakamura M., Shigematsu L, Nakanishi M., Shimojima K., Yamada Y. and Shigegaki Y., (1997) Microstructure of Joining Interfaces of Si3N4 Ceramics formed by Diffusion Bonding, J. Mat. Scl. Lett, 16 1654–1655.
Kanzaki S. and Tabata H., (1983) Diffusion Joining of Silicon Nitride Ceramics, J. Japan Ceram. Soc., 91 [11] 520–522.
Nakamura M., Kubo K., Kanzaki S. and Tabata H., (1987) Joining of Silicon Nitride Ceramics by Hot Pressing, J. Mat. Sc., 22 1259–1264.
Bellosi A. and Esposito L., (1995) Direct Joining of Silicon Nitride: Microstructure and Properties, in: B. S. Tranchina and A. Bellosi, Proc. Fourth Euro Ceramics, Vol. 9, Gruppo Editoriale Faenza Editrice S.p.A., Italy, pp. 205–212.
Clarke D. R. and Gee M. L., (1992) Wetting of surfaces and grain boundaries, in D. Wolf, S. Yip (eds.), Materials Interfaces, Chapman Hall, London, pp. 255–272.
Clarke D. R, Shaw T. M., Philipse A. P. and Horn R. G., (1993) Possible Electrical Double-Layer Contribution to the Equilibrium Thickness of Intergranular Glass Films in Polycrystalline Ceramics, J. Am. Ceram. Soc., 76 [5] 1201–204.
Horn R G., (1990) Surface Forces and their Action in Ceramic Materials, J. Am. Ceram. Soc„ 73 [5] 1117–1135.
Clarke D. R, (1989) High-Temperature Microstructure of a Hot-Pressed Silicon Nitride, J. Am. Ceram. Soc., 72 [9] 1604–609.
Shaw T. M., (1986) Liquid Redistribution during Liquid-Phase Sintering, J Am. Ceram. Soc., 69 [1] 27–34.
Shaw T. M., (1993) Model for the Effect of Powder Packing on the Driving Force for Liquid-Phase Sintering, J. Am. Ceram. Soc., 76 [3] 664–70.
Kwon 0.-H., (1996) Liquid Phase Sintering, in R. W. Cahn, P. Hessen, E. J. Kramer (eds) Materials Science and Technology, Vol. 17B, Processing of Ceramics, Part II, VCH, Germany, pp. 99–121.
Park H.-H., Kang S.-J. L., Yoon D. N, (1986) An Analysis of the Surface Menisci in a Mixture of Liquid and Deformable Grains, Metall. Trans., Vol. 17A, 325–330.
Raj R., (1981) Morphology and Stability of the Glass Phase in Glass-Ceramic systems, J. Am. Ceram. Soc., 64 [5] 245–248.
Mecartney M. L., Sinclair R. and Loehman R. E., (1985) Silicon Nitride Joining, J. Am. Ceram. Soc., 68 [9] 472–78.
Johnson S. M. and Rowcliffe D. J., (1985) Mechanical Properties of Joined Silicon Nitride, J. Am. Ceram. Soc., 68 [9] 468–72.
Brittain R. D., Johnson S. M., Lamoreaux R. H. and Rowcliffe D. J., (1984) High-Temperature Chemical Phenomena Affecting Silicon Nitride Joints, J. Am. Ceram. Soc., 67 [8] 522–26.
Baik S. and Raj R, (1987) Liquid-Phase Bonding of Silicon Nitride Ceramics, J. Am. Ceram. Soc., 70 [5] C105 - C107.
O’Brien M. H. and Coon D. N., (1991) Mechanistic Analysis of Time-Dependent Failure of Oxynitride Glass-Joined Silicon Nitride below 1000°C, J. Am. Ceram. Soc., 74 [1] 103–108.
Krämer M., Hoffmann M. J., Petzow G., (1995) Grain Growth Studies, of Silicon Nitride Dispersed in an Oxynitride Glass, J. Am. Ceram. Soc., 76 [11] 2778–84.
Esposito L., Saiz E., Tomsia A. P., Cannon R.M., (1997) High Temerature Colloidal Processing for Glass/Metal and Glass/Ceramic FGM’s, in A. P. Tomsia and M. Glaeser (eds), Proc. Ceramic Microstructure: Control at the Atomic Level, Plenum Press, NY.
Bellosi A., Monteverde F., Babini G. N., (1996) Influence of Powder Treatment Methods on Sintering, Microstructure and Properties of Si3N4-Based Materials, in G. N. Babini, M. Haviar, P. Sajgalik (eds), Engineering Ceramics ‘86: Higher Reliability through Processing, Nato ASI Series 3. High Technology, Vol. 25, Kluwer Academic Publ., pp. 197–212.
Bellosi A., Sciti D., Melandri C., Dalle Fabbriche D., (1997) Liquid-Phase Sintered Silicon Carbide: Processing and Properties to be published in the Proc. of Synthesis and Methodologies in Inorganic Chemistry. New Compound and Materials, Bressanone, Dec., 15–19.
Landi S., (1998) Master Thesis in Industrial Chemistry, University of Bologna.
Loehman R. E., (1983) Preparation and Properties of Oxynitride Glasses, J. Non-Cryst. Solids, 56 123–134.
Clarke D. R., (1987) On the Equilibrium Thickness of the Intergranular Glass Phases in Ceramic Materials, J. Am. Ceram. Soc., 70 [1] 15–22.
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Esposito, L., Bellosi, A. (1998). The Role of Intergranular Phases in Silicon Nitride and Silicon Carbide Direct Joining. In: Bellosi, A., Kosmač, T., Tomsia, A.P. (eds) Interfacial Science in Ceramic Joining. NATO ASI Series, vol 58. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-1917-9_19
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DOI: https://doi.org/10.1007/978-94-017-1917-9_19
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