Experimental Study of Thermal and Flame Front Characteristics in Combustion Synthesis of Porous Ni-Ti Intermetallic Material

    Authors

    Z. L. Li;O. J. Ilegbusi

    Comments

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    Abbreviated Journal Title

    J. Mater. Eng. Perform.

    Keywords

    bio-implantmaterial; combustion synthesis; intermetallic; STATE WAVE VELOCITY; MICROMECHANISTIC MODEL; CONDUCTIVITY; MECHANISM; COMPOUND; TITANIUM; IGNITION; PHASE; AL; Materials Science, Multidisciplinary

    Abstract

    This article describes experimental investigation of thermal and combustion phenomena during the self-propagating combustion synthesis of Ni-Ti intermetallic materials for structural application. Ni-Ti mixture is prepared from elemental powders of Ni and Ti. The mixture is pressed into solid cylindrical samples of 1.1-cm diameter and 2-3-cm length, with initial porosity ranging from 30 to 42%. The samples are preheated to various initial temperatures and ignited from the top surface such that the flame propagates axially downward. The flame speed images are recorded with a motion camera, and the temperature profile is recorded. The flame front propagation velocity is deduced as a function of the preheat temperature and initial porosity as well as the effective thermal conductivity of the reactants.

    Journal Title

    Journal of Materials Engineering and Performance

    Volume

    21

    Issue/Number

    7

    Publication Date

    1-1-2012

    Document Type

    Article

    Language

    English

    First Page

    1193

    Last Page

    1198

    WOS Identifier

    WOS:000305522800010

    ISSN

    1059-9495

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