Abstract
Two techniques are described for synthesizing nanometer-sized TiB2 particles by gas-phase combustion reactions of sodium vapor with TiCl4 and BCl3: a low-pressure, low-temperature burner and a high-temperature flow reactor. Both methods produce TiB2 particles that are less than 15 nm in diameter. The combustion by-product, NaCl, is efficiently removed from the TiB2 by water washing or vacuum sublimation. Material collected from the low-temperature burner and annealed at 1000 °C consists of loosely agglomerated particles 20 to 100 nm in size. Washed material from the high-temperature flow reactor consists of necked agglomerates of 3 to 15 nm particles. A thermodynamic analysis of the Ti/B/Cl/Na system indicates that near 100% yields of TiB2 are possible with appropriate reactant concentrations, pressures, and temperatures.
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References
R. Birringer and H. Gleiter, in Advances in Materials Science, Encyclopaedia of Materials Science Engineering, edited by R. W. Cahn (Pergamon Press, New York, Oxford, 1988), p. 339.
H. Gleiter, Prog. Mater. Sci. 33, 223 (1989).
C. Suryanarayana and F. H. Froes, Metall. Trans. 23A, 1071 (1992).
H. Gleiter, NanoSTRUCTURED Materials 1 (1), 1 (1992).
R. W. Siegel, Mater. Sci. Forum 27, 299 (1989).
H. J. Frost and M.F. Ashby, Deformation Mechanism Maps (Pergamon Press, Oxford, England, 1982).
S. M. L. Sastry, R. J. Lederich, and W. O. Soboyejo, in Extraction, Refining, and Fabrication of Light Metals, edited by M. Sahoo and P. Pinfold (Pergamon Press, Oxford, England, 1991), p. 99.
V. Provenzano, N. P. Louat, and M. A. Imam, NanoSTRUCTURED Materials, 1, 889 (1992).
W. Felder and H. F. Calcote, “A Sodium Flame Process for Synthesis of Pure Metals, Alloys and Ceramics,” presented at 1989 Spring Meeting, Western States Section/Combustion Institute, Pullman, WA, March 20–21, 1989.
H. F. Calcote and W. Felder, Twenty-Fourth Symposium (International) on Combustion, The Combustion Institute, Pittsburgh, 1992, pp. 1869–1876.
I. Glassman, K. A. Davis, and K. Brezinsky, Twenty-Fourth Symposium (International) on Combustion, The Combustion Institute, Pittsburgh, PA, 1992, pp. 1877–1882.
G. D. Ulrich, Chem. and Eng. News. 62 (32), 22 (1984).
Y. Hirose and M. Mitsuizumi, New Diamond 4, 34 (1988).
L. M. Hanssen, W. A. Carrington, J. E. Butler, and K. A. Snail, Mater. Lett. 7, 289 (1988).
J. B. Howard, J. T. McKinnon, Y. Makarovsky, A. L. Lafleur, and M. E. Johnson, Nature 352, 139 (1991).
C. M. Megaridis and R. A. Dobbins, Combust. Sci. Technol. 71, 95 (1990).
R. L. Axelbaum, S. E. Bates, W. E. Buhro, C. Frey, K. F. Kelton, S. A. Lawton, L.J. Rosen, and S. M.L. Sastry, NanoSTRUCTURED Materials 2, 139 (1993).
H. F. Calcote, R. J. Gill, C. H. Berman, and W. Felder, “Production and Coating of Boron Powders,” Final Report TP-489, Office of Naval Research, March 30, 1990.
W. C. Reynolds, STANJAN, Interactive Computer Programs for Chemical Equilibrium Analysis, Stanford University, 1986.
CRC Handbook of Chemistry and Physics, 71st ed., edited by D. R. Lide (The CRC Press, Inc., Boca Raton, FL, 1992).
S. E. Bates, W. E. Buhro, C. A. Frey, S. M. L. Sastry, and K. F. Kelton, J. Mater. Res. 10, 2599 (1995).
D. P. DuFaux and R. L. Axelbaum, Combust. Flame 100, 350 (1995).
R. W. Chorley and P. W. Lednor, Advanced Mater. 3 (10), 474 (1991).
Liquid-Metals Handbook–Sodium (NaK) Supplement, edited by C. B. Jackson, U.S. Government Printing Office, Washington, DC, 1955.
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Axelbaum, R.L., DuFaux, D.P., Frey, C.A. et al. Gas-phase combustion synthesis of titanium boride (TiB2) nanocrystallites. Journal of Materials Research 11, 948–954 (1996). https://doi.org/10.1557/JMR.1996.0119
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DOI: https://doi.org/10.1557/JMR.1996.0119