Abstract
During an X-ray examination of the reaction between Ti and B12C3 powders, it was observed that TiB formed rapidly as one of the major initial products rather than the expected TiB2. A study of the kinetics of forming TiB by the simpler reaction Ti+TiB2→2TiB was begun to determine the mechanism for its rapid formation. Strashinskaya and Stepanchuk have reported growth of diffusional TiB films on TiB2(1) in which TiB was formed after three hours at 900°C while the reaction was complete after one hour at 1400°C. This study did not take account of the powder compact structure nor could it explain the rapid formation cited above. Therefore it was decided to follow the evolution of the reaction using Quantitative Microscopy to learn what influence the compact structure has on the kinetics.
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References
L. V. Strashinskaya and A. N. Stepanchuk,“Contract Interaction of titanium diboride with titanium, zirconium, and vanadium in vacuo, ”Fiz.-Khim. Mekh. Mater., 6(6)76-9(1970).
Quantitative Microscopy, Ed. by R. T. DeHoff and F. N. Rhines, McGraw-Hill Book Co., 1968.
S. F. Hulbert, “Models for Solid-State Reactions in Powdered Compacts: A Review,” J.Brit.Ceram. Soc., 6(1)11-20(1969).
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© 1977 Springer Science+Business Media New York
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Walther, G.C., Loehman, R.E. (1977). Kinetics of TiB Formation. In: Wood, J., Lindqvist, O., Helgesson, C., Vannerberg, NG. (eds) Reactivity of Solids. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-2340-2_29
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DOI: https://doi.org/10.1007/978-1-4684-2340-2_29
Publisher Name: Springer, Boston, MA
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