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Current Research Issues in Silicon Nitride Structural Ceramics

Published online by Cambridge University Press:  29 November 2013

Arvid E. Pasto
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Ceramics have long been known for their refractoriness, or ability to bear loads at elevated temperatures. However, until the 1960s, the predominant refractory ceramics were oxide-based materials such as silica, zirconia, alumina, mullite, magnesia, and their combinations, including silicates. These ceramics were, and still are, used for firebrick furnace linings, crucibles and liquid metal carrier liners, regenerators, and recuperators.

However, these materials all possess some characteristic which precludes their use for very high stress, high temperature applications. Typically, the silicates form viscous liquids which allow creep, while zirconia and alumina suffer from poor thermal shock resistance, and magnesia possesses a large thermal expansion coefficient. Consequently, for heat engine applications which involve high temperatures, high stresses, sudden temperature changes (e.g., startup), and may involve the maintenance of tight operating tolerances, a new family of materials is required. The requisite properties for heat engine applications may be found in certain non-oxide materials, namely silicon nitride and silicon carbide. They possess high strength even at high temperatures, low thermal expansion coefficient, and excellent thermal shock resistance. These materials are not thermodynamically stable in air at elevated temperatures and will eventually react to form oxides. Nonetheless, they possess excellent oxidation resistance by virtue of protective silica-based glass oxidation layers.

Type
Ceramics
Information
MRS Bulletin , Volume 12 , Issue 7 , November 1987 , pp. 73 - 79
Copyright
Copyright © Materials Research Society 1987

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References

1.Pasto, A.E., “Silicon Nitride-Cordierite Composites for Diesel Engine Applications,” Ceram. Eng. Sci. Proc. 5 (May/June 1984) p. 385–396.CrossRefGoogle Scholar
2.Avella, F.J. and Bowen, L.J., U.S. Patent No. 4 698 354 “Silicon Nitride Substrate” (August 26, 1986).Google Scholar
3.Hayashi, S. and Hirai, T., “Thermal Conductivity of Chemically Vapour-Deposited Si3N4-TiN Composites,” J. Mater. Sci. 18 (1983) p. 3259–3264.CrossRefGoogle Scholar
4.Wimmer, J. and Johansen, K., Ceramic Components for Turbine Engines, AFWAL-TR-83-4012, November 1983.Google Scholar
5.Wotting, G., Kanka, B., and Ziegler, G., “Microstructural Development, Microstructural Characterization and Relation to Mechanical Properties of Dense Silicon Nitride,” in Non-Oxide Technical and Engineering Ceramics, edited by Hampshire, S. (Elsevier Applied Science, 1986) p. 83–96.CrossRefGoogle Scholar
6.Buljan, S.T., Baldoni, J.G., and Huckabee, M.L., “Si3N4-SiC Composites,” Am. Ceram. Soc. Bull 66 (2) (1987) p. 347–352.Google Scholar
7.Mangels, J.A., “Sintered Reaction-Bonded Silicon Nitride,” Ceram. Eng. Sci. Proc. (July/August 1981) p. 589–603.Google Scholar
8.Leipold, M.H., “Hot Pressing,” in Treatise on Materials Science and Technology, Vol. 9: Ceramic Fabrication Processes, edited by Wang, F.F.Y. (Academic Press, 1976) p. 95–134.CrossRefGoogle Scholar
9.Williams, R.M., Juterbock, B.N., Peters, C.R., and Whalen, T.J., “Forming and Sintering Behavior of B-and C- Doped Alpha- and Beta- SiC,” Commun. Am. Ceram. Soc. (April 1984) p. C62–64.Google Scholar
10.Wachtman, J.B. Jr., “Reliability and Cost: Roadblocks to Commercialization,” Ceramic Industry (May 1977) p. 38–40.Google Scholar
11.Sheppard, L.M., “Reliable Ceramics for Heat Engines,” Advanced Materials and Processes including Metal Progress (Oct. 1986) p. 54–59, 64–66.Google Scholar
12.Reliability of Ceramics for Heat Engine Applications, NMAB-357 (1980).Google Scholar
13.Yeh, H.C. and Fang, H.T., Improved Silicon Nitride for Advanced Heat Engines, NASA CR-179525 (February 1987).Google Scholar
14.Whalen, T.J. and Winterbottom, W.L., Improved Silicon Carbide for Advanced Heat Engines, NASA Contractor Report 179477, September 1986.Google Scholar
15.Neil, J.T., Pasto, A.E., and Bowen, L.J., “Improving the Reliability of Silicon Nitride: A Case Study,” J. Am. Ceram. Soc. 1987, (to be published).Google Scholar
16.Pasto, A.E., Neil, J.T.,and Quackenbush, C.L., “Microstructural Effects Influencing Strength of Sintered Silicon Nitride,” Ultrastructure Processing of Ceramics, Glasses, and Composites, edited by Hench, and Ulrich, (Wiley, 1984) Chapter 37, p. 476–489.Google Scholar
17.Buljan, S.T., Neil, J.T., Pasto, A.E., Smith, J.T., and Zilberstein, G., “Silicon Nitride Ceramics and Composites: A View of Reliability Enhancement,” in Non-Oxide Technical and Engineering Ceramics, edited by Hampshire, S. (Elsevier Applied Science, 1986) p. 409–431.CrossRefGoogle Scholar
18.Koenigsberg, W. and Neil, J.T., “Ceramic Binder Removal Studies Using Projection Radiography,” presented at the 1987 Conference on Nondestructive Testing of High Performance Ceramics, Boston, MA (to be published).Google Scholar
19.Neil, J.T., Pasto, A.E., Koenigsberg, W., Cotter, D.J., and Bowen, L.J., “Role of NDE in Enhancing the Reliability of Structural Ceramics,” presented at the 1987 Conference on Nondestructive Testing of High Performance Ceramics, Boston, MA (to be published).Google Scholar
20.Cotter, D. and Koenigsberg, W., “Microfocus Radiography of High Performance Silicon Nitride Ceramics,” presented at the 1987 Conference on Nondestructive Testing of High Performance Ceramics, Boston, MA (to be published).Google Scholar
21.Bandyopadhyay, G. and French, K.W., “Fabrication of Near-Net-Shape Silicon Nitride Parts for Turbine Application,” J. Eng. for Gas Turbines and Power 108 (1986) p. 536–539.CrossRefGoogle Scholar
22.Pasto, A.E., “Causes and Effects of Fe-Bearing Inclusions in Sintered Si3N4,” Comm. Am. Ceram. Soc. 67 (9) (1984) p. C178–180.CrossRefGoogle Scholar
23.Singh, J.P., A Review of the Effect of Flaws on the Fracture Behavior of Structural Ceramics, ANL/FE-86-3, Sept. 1986.Google Scholar
24.Ceramic Materials and Components for Engines, edited by Bunk, W. and Hausner, H. (Verlag Deutsche Keramische Gesellschaft, 1986).Google Scholar
25.Baaklini, G.Y. and Roth, D.J., “Probability of Detection of Internal Voids in Structural Ceramics Using Microfocus Radiography,” J. Mater. Res. 1 (3) (1986) p. 457–467.CrossRefGoogle Scholar
26.Vary, A., “Nondestructive Evaluation of Structural Ceramics,” in Structural Ceramics, NASA CP-2427 (May 1986) p. 35–46.Google Scholar