Effect of an electromagnetic field on the combustion of a Ti + C system

Formation of electric potential during the oxidation of a metal particle

“…Theoretical studies predicted that external Joule heating could sustain the combustion when the adiabatic temperature was too low to maintain a moving reaction front (Feng and Munir, 1995; Filimonov and Kidin, 1992, 1996; Kidin and Filimonov, 1990, 1992; Munir, 2000; Zakiev, 1999). This prediction was verified experimentally (Dalton et al, 1990; Maglia et al, 2001; Munir, 2000; Trofimov and Yukhvid, 1993). However, these models of solid combustion did not account for the electromagnetic impulse produced by the moving temperature wave.…”

High-Temperature Combustion Synthesis: Generation of Electromagnetic Radiation and the Effect of External Electromagnetic Fields (Review)

“…In this case, however, the external action is applied in a contactless manner: through an inductor irradiating a powerful electromagnetic wave. It was found [72] that the region of the non-reacted, weakly conducting initial mixture does not absorb such a wave; in the MICROCOM method, therefore, additional heating is mainly localized in the region of synthesis products and the combustion front. As a result, automatic localization of external heating (electric energy saving) and associated improvement of stability of combustion-front propagation occur simultaneously.…”

“…An additional advantage of MICROCOM is a possibility of its more effective application in hotspot regimes of propagation (e.g., spin) and in regimes with a curved combustion front. The experiments of [72][73][74] and the estimates based on parameters of these experiments showed [72] that zones of heat release due to chemical and electromagnetic sources are commensurable in thickness (≈1 cm) and overlap in space. If we use the estimate of the skin-layer thickness [72], we can conclude on the basis of the data of [72][73][74] that the density of induced eddy electric currents in the MICRO-COM method is not lower than the current density in the ETE or FACS methods.…”

“…The experiments of [72][73][74] and the estimates based on parameters of these experiments showed [72] that zones of heat release due to chemical and electromagnetic sources are commensurable in thickness (≈1 cm) and overlap in space. If we use the estimate of the skin-layer thickness [72], we can conclude on the basis of the data of [72][73][74] that the density of induced eddy electric currents in the MICRO-COM method is not lower than the current density in the ETE or FACS methods. The data on setup powers [75][76][77] also indicate significant specific energy expenditures (≈10 kJ/g).…”