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In situ densification of SHS composites from nanoreactants

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Abstract

The primary objective of this investigation was focused on in-situ densification of SHS composites synthesized from nanoreactants. Simultaneous combustion synthesis and densification technique was utilized and it was found to be an effective method to form dense intermetallic-ceramic composites. In this research study, two nanoreactant energetic systems, Al-TiO2 and Ni-Al-Al2O3, were explored. In-situ combustion synthesis and densification experiments were conducted in a uniaxial press with densification pressures up to 200 MPa and preheating capability of 1500K. The experiments were conducted in both vacuum and Ar atmosphere. Samples of titanium aluminides-alumina composites with density in the range of 95–98% have been obtained at a preheating temperature of 860°C and pressure of 100 MPa. Reactants and SHS-produced materials were characterized by SEM, XRD, BET, and DSC/TGA. In addition, more fundamental studies of the reaction kinetics as a function of average particle size of aluminum nanopowders were conducted using DSC.

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References

  1. Merzhanov, A.G., Shkiro, V.M., and Borovinskaya, I.P., A Method for Synthesizing Refractory Compounds, USSR Inventor’s Certificate 255 221, 1967.

  2. Munir, Z.A. and Anselmi-Tamburini, U., Self-Propagating Exothermic Reactions: The Synthesis of High Temperature Materials by Combustion, Mater. Sci. Rep., 1989, vol. 3, pp. 277–365.

    Article  CAS  Google Scholar 

  3. Merzhanov, A.G., SHS Process: Combustion Theory and Practice, Arch. Combust. (Warsaw), 1981, vol. 1, pp. 23–48.

    CAS  Google Scholar 

  4. Merzhanov, A.G., Self-Propagating High-Temperature Synthesis: Twenty Years of Search and Findings, in Combustion and Plasma Synthesis of High Temperature Materials, Munir, Z.A. and Holt, J.B., Eds., New York: VCH Publishers, 1990, pp. 1–53.

    Google Scholar 

  5. Merzhanov, A.G., Theory and Practice of SHS: World-wide State-of-the-Art and the Newest Results, Int. J. SHS, 1993, vol. 2, no. 2, pp. 113–158.

    CAS  Google Scholar 

  6. Munir, Z.A., Charlot, E.R., Bernard, F., and Gaffet, E., One-Step Synthesis and Consolidation of Nanophase Materials, US Patent 6 200 515, 2001.

  7. Olevsky, E.A., Strutt, E.R., and Meyers, M.A., Self-Propagating High-Temperature Synthesis and Densification of Powdered Cermets, Mater. Proc. Technol., 2002, vol. 121, no. 14, pp. 157–166.

    Article  CAS  Google Scholar 

  8. Puszynski, J.A., Liebig, B.E., Dargar, S.R., and Swiatkiewicz, J.J., Use of Nanosize Reactants in SHS Processes, Int. J. SHS, 2003, vol. 12, no. 12, pp. 107–119.

    CAS  Google Scholar 

  9. Puszynski, J.A., Dargar, S.R., and Liebig B.E., Combustion Synthesis of Ceramic Composites and Solid Solutions from Nanoreactants, Ceram. Trans., 2004, vol. 166, pp. 11–21.

    Google Scholar 

  10. Dargar, S., Groven, L., Swiatkiewicz, J., and Puszynski, J.A., Formation of Intermetallic-Ceramic Composites in Self-Sustaining Reaction Regime, Mater. Res. Soc. Symp. Proc., 2004.

  11. Varma, A., Rogachev, A.S., Mukasyan, A.S., and Hwang, S., Combustion Synthesis of Advanced Materials: Principles and Applications, Adv. Chem. Eng., 1998, vol. 24, pp. 79–225.

    Article  CAS  Google Scholar 

  12. Merzhanov, A.G., Nonisothermal Methods in Chemical Kinetics, Fiz. Goreniya Vzryva, 1972, no. 9, pp. 4–36.

  13. ASTM E698-79: Standard Test Method for Arrhenius Kinetic Constants for Thermally Unstable Materials (reapproved 1984).

  14. Duswalt, A.A., The Practice of Obtaining Kinetic Data by Differential Scanning Calorimetry, Thermochem. Acta, 1974, vol. 8, pp. 57–68.

    Article  CAS  Google Scholar 

  15. Doyle, C.E., Series Approximations to the Equation of Thermogravimetric Data, Nature, 1965, vol. 29, p. 290.

    Article  Google Scholar 

  16. Rogachev, A.S., Macrokinetics of Gasless Combustion: Old Problems and New Approaches, Int. J. SHS, 1997, vol. 6, no. 2, pp. 215–241.

    CAS  Google Scholar 

  17. Biswas, A., Roy, S.K., Gurumurthy, K.R., Prabhu, N., and Banerjee, S., A Study of Self-Propagating High-Temperature Synthesis of NiAl in Thermal Explosion Mode, Acta Mater., 2002, vol. 50, pp. 757–773.

    Article  CAS  Google Scholar 

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Authors and Affiliations

  1. Chemistry and Chemical Engineering Department, South Dakota School of Mines and Technology, Rapid City, SD, 57701, USA

    S. R. Dargar, L. J. Groven, J. J. Swiatkiewicz & J. A. Puszynski

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  1. S. R. Dargar
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  2. L. J. Groven
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  3. J. J. Swiatkiewicz
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  4. J. A. Puszynski
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Correspondence to J. A. Puszynski.

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Dargar, S.R., Groven, L.J., Swiatkiewicz, J.J. et al. In situ densification of SHS composites from nanoreactants. Int. J Self-Propag. High-Temp. Synth. 16, 125–132 (2007). https://doi.org/10.3103/S1061386207030041

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  • DOI: https://doi.org/10.3103/S1061386207030041

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