Nitrogen Transfer in Austenitic Sodium Heat Transport Systems
Transfer of the interstitial elements, carbon and nitrogen, in high-temperature sodium heat transport systems is a well-recognized phenomenon which has been studied extensively over the years. There are many recorded examples of carbon and nitrogen loss from, and pick-up by stainless steels exposed to high temperature sodium under a variety of conditions. Carbon transfer has, however, received the major share of attention. In-depth studies, sponsored by the Department of Energy at the Westinghouse Advanced Reactors Division and at the Argonne National Laboratories, have expanded the knowledge of this phenomenon to a stage where predictive equations are now routinely used for the prediction of end-of-life carbon levels in structural components.
KeywordsAustenitic Stainless Steel Nitrogen Loss Nitrogen Activity Initial Nitrogen Nitrogen Diffusion
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- 1.C. Bagnall, M. G. Cowgill, S. J. Orbon, and S. L. Schrock, “Nitrided Type 304 Stainless Steel in Sodium: Stability and Nitrogen Diffusion Data: WARD 328, November 1975.Google Scholar
- 2.C. L. Walker, H. D. Wilstead, “Investigation of Bimetallic Liquid Metal Systems”, GMAD 3643 - 8, September 1968.Google Scholar
- 3.C. R. Manning, Jr., “Nitrogen Diffusion Constants in Austenitic Stainless Steels as Determined by Internal Friction Measurements”, M.S. Thesis Virginia Polytechnic Institute, 1962.Google Scholar
- 4.J. E. Cordwell, T. Swan, and S. P. Tyfield, “The Nitriding of Solution Treated AISI Type 316 Stainless Steel in Ammonia”, RD/B/N3051 CEGB, December 1974.Google Scholar
- 5.J. K. Stanley, “Mechanical Properties of Nitrided Austenitic Stainless Steel as Related to Microstructure; 1 January–1 July 1969”, AD-698745, November 1968.Google Scholar
- 6.R. Hales and A. C. Hill, “The Diffusion of Nitrogen in an Austenitic Stainless Steel”, Met.Sci., pp. 241–244 (1977).Google Scholar
- 7.Vanadium Alloy Cladding Development. Quarterly Progress Report for the Period Ending March 31 1970”, WARD-3791-46, April 1970.Google Scholar
- 8.S. A. Shiels, C. Bagnall, S. J. Orbon and S. L. Schrock, “Interstitial Transfer Program. ITF Runs 2 and 3”. WARD-NA-3045-22, July 1975.Google Scholar
- 9.S. A. Shiels, C. Bagnall, S. J. Orbon and S. L. Schrock, “Interstitial Transfer Program, ITF Runs 4, 5 and 6, Program Conclusions”, WARD-NA-3045-34. June 1976.Google Scholar
- 10.S. A. Shiels, C. Bagnall, and S. L. Schrock, “Interstitial Mass Transfer in Sodium Systems”, Proceedings of the Symposium on Chemical Aspects of Carbon and Mass Transfer in Liquid Sodium, pp. 157–166, American Institute of Mining, Metallurgical and Petroleum Engineers, New York, 1973.Google Scholar
- 11.Effects of Sodium Exposure on the Corrosion and Strength of Stainless Steels Summary Report Sodium Mass Transfer Program”, GEAP-10394, August 1971.Google Scholar
- 12.H. Atsumo et al.,”Sodium Compatibility and Corrosion Tests for Component Materials”, “Proceedings of the International Conference on Liquid Metal Technology in Energy Production”, C0NF-760503-P2, November 1976. pp 849 - 859.Google Scholar