SHS combustion characteristics of several ceramics and intermetallic compounds. [Self-propagating High-temperature Synthesis]
- Shizuoka Univ., Hamamatsu (Japan). Dept. of Energy and Mechanical Engineering
- Princeton Univ., NJ (United States). Dept. of Mechanical and Aerospace Engineering
Extensive comparisons have been conducted between experimental and theoretical results for the SHS combustion characteristics of a number of solid-solid systems. The heterogeneous flame propagation theory describes a premixed mode of bulk flame propagation supported by the nonpremixed reaction of dispersed nonmetal (or higher melting point metal) particles in the liquid metal, with finite-rate reaction at the particle surface and temperature-sensitive Arrhenius-type condensed-phase mass diffusivity. Systems examined are those of borides (TiB[sub 2], ZrB[sub 2], and HfB[sub 2]) and intermetallic compounds (NiAl, TiCo, and TiNi). By using a consistent set of physico-chemical parameters for these systems, satisfactorily quantitative agreement is demonstrated for the effects of mixture ratio, degree of dilution, and particle size on the burning velocity. Experimental flammability limits are also predicted by the theory.
- OSTI ID:
- 7275532
- Journal Information:
- Journal of the American Ceramic Society; (United States), Vol. 77:3; ISSN 0002-7820
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALUMINIUM ALLOYS
FLAME PROPAGATION
SYNTHESIS
COBALT ALLOYS
HAFNIUM BORIDES
NICKEL ALLOYS
TITANIUM ALLOYS
TITANIUM BORIDES
TITANIUM NITRIDES
ZIRCONIUM BORIDES
COMBUSTION KINETICS
ALLOYS
BORIDES
BORON COMPOUNDS
CHEMICAL REACTION KINETICS
HAFNIUM COMPOUNDS
KINETICS
NITRIDES
NITROGEN COMPOUNDS
PNICTIDES
REACTION KINETICS
REFRACTORY METAL COMPOUNDS
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication
360101 - Metals & Alloys- Preparation & Fabrication
400800 - Combustion
Pyrolysis
& High-Temperature Chemistry