The present study is focussed on the oxidation behavior of nonoxide silicon-based ceramics. Various and SiC ceramics were examined after long term oxidation tests (up to 5000 h) at 1500°C in ambient air. The damage mechanisms were discussed on the basis of a comprehensive chemical and microstructural analysis of the materials after the oxidation tests. The diffusion of oxygen into the material and its further reaction in the bulk of the material were found to be the most critical factors during long term oxidation treatment at elevated temperatures. However, the resulting damage in the microstructure of the materials can be significantly reduced by purposeful microstructural engineering. Using and composite materials provides the possibility to improve the high temperature stability. [S0742-4795(00)00301-X]
1.
Pezzotti
, G.
, 1993
, “Si3N4/SiC-Platelet Composite Without Sintering Aids: A Candidate for Gas Turbine Engines
,” J. Am. Ceram. Soc.
, 76
, No. 5
, pp. 1313
–1320
.2.
Menon
, M. N.
, et al., 1994
, “Creep and Stress Rupture Behavior of an Advanced Silicon Nitride
,” J. Am. Ceram. Soc.
, 77
, No. 5
, pp. 1217
–1241
.3.
Watanabe, K., et al., 1991, “Development of Silicon Nitride Radial Turbine Rotors,” Proceedings, 4th Int. Symp. Ceram. Mater. & Engines, R. Carlson, T. Johanson, and T. Kahlman, eds., Elsevier, London, pp. 1009–1016.
4.
Gasdaska
, C. J.
, 1994
, “Tensile Creep in an in Situ Reinforced Silicon Nitride
,” J. Am. Ceram. Soc.
, 77
, No. 9
, pp. 2408
–2418
.5.
Tressler
, R. E.
, 1990
, “Environmental Effects on Long Term Reliability of SiC and Si3N4-Ceramics
,” Ceram. Trans.
, 10
, R. E. Tressler, ed., pp. 99
–124
.6.
Van der Biest, O., Weber, C., and Garguet, L. A., 1989, “Role of Oxidation on Creep and High-Temperature Failure of Silicon Nitride,” Proceedings, 3th Int. Symp. Ceram. Mater. & Components for Engines, V. Tennery, ed., Columbus, OH.
7.
Nishimurn N., Masuo, E., and Takita, K., 1991, “Effect of Microstructural Degradation on the Strength of Silicon Nitride after High-Temperature Exposure,” Proceedings, 4th Int. Symp. Ceram. Mater. & Components for Engines, R. Carlson, T. Johansson, and T. Kahlman, eds., Elsevier, London, pp. 1139–1146.
8.
Wereszczak
, A. A.
, Ferber
, M. K.
, Kirkland
, T. P.
, More
, K. L.
, Foley
, M. R.
, and Yeckley
, R. L.
, 1995
, “Evolution of Stress Failure Resulting from High-Temperature Stress-Corrosion Cracking in a Hot Isostatically Pressed Silicon Nitride
,” J. Am. Ceram. Soc.
, 78
, No. 8
, pp. 2129
–2140
.9.
Van der Biest
, O.
, and Weber
, C.
, 1990
, “Effects of Oxidation on Long-Term Failure of Silicon Nitride
,” Ceram. Trans.
, 10
, R. E. Tressler, ed., pp. 125
–139
.10.
Kim
, H. E.
, and Moorhead
, A. J.
, 1990
, “Effects of Gaseous Corrosion on the Strength of SiC and Si3N4,
” Ceram. Trans.
, 10
, R. E. Tressler, ed., pp. 81
–92
.11.
Clarke
, D. R.
, Lange
, F. F.
, and Schnittgrund
, G. D.
, 1982
, “Strengthening of a Silicon Nitride by Post Fabrication Heat Treatment
,” J. Am. Ceram. Soc.
, 65
, pp. 51
–52
.12.
Choi
, S. R.
, Tikare
, V.
, and Pawlik
, R.
, 1991
, “Crack Healing in Silicon Nitride Due to Oxidation
,” Ceram. Eng. Sci. Proc.
, 12
, pp. 190
–202
.13.
Wereszczak, A. A., Kirkland, T. P., and Ferber, M., 1995, “Differences in Creep Performance of a HIPed Silicon Nitride in Ambient Air and Inert Environments,” Proceedings, 19th Annual Cocoa Beach Conf. & Exp., January 8–12, 1995.
14.
Lewis, M. H., Heath, C. H., Winder, M. S., and Lumby, R. J., 1984, “High Temperature Creep and Fracture of β-Si3N4 Ceramic Alloys,” in Deformation in Ceramics Materials II, R. E. Tressler and R. C. Bradt, eds., Plenum, N.Y., pp. 605–612.
15.
Lange
, F. F.
, Davis
, G. I.
, and Graham
, H. C.
, 1977
, “Compressive Creep and Oxidation Resistance of an Si3N4-Material Fabricated in the System Si3N4-Si2N2O-Y2Si2O7,
” J. Am. Ceram. Soc.
, 60
, pp. 249
–252
.16.
Wereszczak
, A. A.
, Broder
, K.
, and Ferber
, M. K.
, 1993
, “Role of Oxidation in the Time-Dependent Failure Behavior of Hot Isostatically Pressed Silicon Nitride at 1370°C
,” J. Am. Ceram. Soc.
, 76
, No. 11
, pp. 2929
–2922
.17.
Klemm
, H.
, and Pezzotti
, G.
, 1994
, “Fracture Toughness and Time-Dependent Strength Behavior of Low-Doped Silicon Nitrides for Applications at 1400°C
,” J. Am. Ceram. Soc.
, 77
, pp. 553
–561
.18.
Klemm
, H.
, Herrmann
, M.
, and Schubert
, C.
, 1997
, “Silicon Nitride Materials with an Improved High Temperature Oxidation Resistance
,” Ceram. Eng. Sci. Proc.
, 18
, No. 3
, pp. 615
–623
.19.
Clarke, D. R., 1983, “Thermodynamic Mechanism for Cation Diffusion Through an Intergranular Phase: Application to Environmental Reactions with Nitrogen Ceramics,” in Progress in Nitrogen Ceramics,
20.
Klemm
, H.
, Tangermann
, K.
, Schubert
, C.
, Hermel
, W.
, 1996
, “Influence of Molybdenum Silicide Additions on High-Temperature Oxidation Resistance of Silicon Nitride Materials
,” J. Am. Ceram. Soc.
, 79
, No. 9
, pp. 2429
–2435
.21.
Klemm
, H.
, Herrmann
, M.
, and Schubert
, C.
, 1995
, “Problems and Prospects of Silicon Nitride Materials for Applications at Temperatures Above 1400°C
,” High Temp.-High Press.
, 27/28
, pp. 449
–456
.22.
Herrmann
, M.
, Klemm
, H.
, Schubert
, C.
, Hermel
, W.
, 1997
, “Long-Term Behavior of SiC/Si3N4-Nanocomposites at 1400–1500°C
,” Key Eng. Mater.
, 132–136
, pp. 1977
–1980
. Copyright © 2000
by ASME
You do not currently have access to this content.
