Skip to main content Accessibility help
×
Home

Gas-phase combustion synthesis of titanium boride (TiB2) nanocrystallites

  • R. L. Axelbaum (a1), D. P. DuFaux (a1), C. A. Frey (a1), K. F. Kelton (a2), S. A. Lawton (a3), L. J. Rosen (a1) and S. M. L. Sastry (a1)...

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.

Copyright

References

Hide All
1.Birringer, R. and Gleiter, H., in Advances in Materials Science, Encyclopaedia of Materials Science Engineering, edited by Cahn, R. W. (Pergamon Press, New York, Oxford, 1988), p. 339.
2.Gleiter, H., Prog. Mater. Sci. 33, 223 (1989).
3.Suryanarayana, C. and Froes, F. H., Metall. Trans. 23A, 1071 (1992).
4.Gleiter, H., NanoSTRUCTURED Materials 1 (1), 1 (1992).
5.Siegel, R. W., Mater. Sci. Forum 27, 299 (1989).
6.Frost, H. J. and Ashby, M.F., Deformation Mechanism Maps (Pergamon Press, Oxford, England, 1982).
7.Sastry, S. M. L., Lederich, R. J., and Soboyejo, W. O., in Extraction, Refining, and Fabrication of Light Metals, edited by Sahoo, M. and Pinfold, P. (Pergamon Press, Oxford, England, 1991), p. 99.
8.Provenzano, V., Louat, N.P., and Imam, M.A., NanoSTRUC-TURED Materials, 1, 889 (1992).
9.Felder, W. and Calcote, H. F., “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.
10.Calcote, H. F. and Felder, W., Twenty-Fourth Symposium (International) on Combustion, The Combustion Institute, Pittsburgh, 1992, pp. 18691876.
11.Glassman, I., Davis, K. A., and Brezinsky, K., Twenty-Fourth Symposium (International) on Combustion, The Combustion Institute, Pittsburgh, PA, 1992, pp. 18771882.
12.Ulrich, G. D., Chem. and Eng. News. 62 (32), 22 (1984).
13.Hirose, Y. and Mitsuizumi, M., New Diamond 4, 34 (1988).
14.Hanssen, L. M., Carrington, W. A., Butler, J. E., and Snail, K. A., Mater. Lett. 7, 289 (1988).
15.Howard, J. B., McKinnon, J.T., Makarovsky, Y., Lafleur, A. L., and Johnson, M. E., Nature 352, 139 (1991).
16.Megaridis, C. M. and Dobbins, R. A., Combust. Sci. Technol. 71, 95 (1990).
17.Axelbaum, R. L., Bates, S. E., Buhro, W. E., Frey, C., Kelton, K. F., Lawton, S. A., Rosen, L.J., and Sastry, S.M.L., NanoSTRUC-TURED Materials 2, 139 (1993).
18.Calcote, H. F., Gill, R. J., Berman, C. H., and Felder, W., “Production and Coating of Boron Powders,” Final Report TP-489, Office of Naval Research, March 30, 1990.
19.Reynolds, W.C., STANJAN, Interactive Computer Programs for Chemical Equilibrium Analysis, Stanford University, 1986.
20.CRC Handbook of Chemistry and Physics, 71st ed., edited by Lide, D. R. (The CRC Press, Inc., Boca Raton, FL, 1992).
21.Bates, S. E., Buhro, W. E., Frey, C. A., Sastry, S. M. L., and Kelton, K. F., J. Mater. Res. 10, 2599 (1995).
22.DuFaux, D. P. and Axelbaum, R.L., Combust. Flame 100, 350 (1995).
23.Chorley, R. W. and Lednor, P. W., Advanced Mater. 3 (10), 474 (1991).
24.Liquid-Metals Handbook–Sodium (NaK) Supplement, edited by Jackson, C. B., U.S. Government Printing Office, Washington, DC, 1955.

Gas-phase combustion synthesis of titanium boride (TiB2) nanocrystallites

  • R. L. Axelbaum (a1), D. P. DuFaux (a1), C. A. Frey (a1), K. F. Kelton (a2), S. A. Lawton (a3), L. J. Rosen (a1) and S. M. L. Sastry (a1)...

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed