Combustion in Ni–Al System with Cu Additive (Powder or Rod). Experiment and Mathematical Model

Russian Journal of Non-Ferrous Metals - Experimental studies have been carried out with theoretical calculations of wave synthesis in the Ni–Al–Cu system using a mathematical model....     

Optical emission spectrum in combustion with formation of condensed reaction products

Broadband far ultraviolet (UV) emission (up to 200 nm) was recorded during combustion of heterogeneous systems with the formation of condensed reaction products. It was shown that UV emission occurred during combustion in various gases (He, Ar, and N₂) and had the highest intensity in helium at a pressure of 25 kPa. This emission is attributed to the chemiionization of gas, separation of charges in combustion products, and subsequent microbreakdowns.     

Microwave Radiation from Combustion of an Iron-Aluminum Thermite Mixture

Nonequilibrium microwave radiation from the combustion wave of the Fe₂O₃-Al powder system in the frequency range of 3.4–37.5 GHz was recorded. It is found that the radiation power is proportional to the free-surface area of the reaction products and is 4–7 orders of magnitude higher than the thermal-radiation level in the same wavelength interval. A possible mechanism of the electromagnetic emission is the Bremsstrahlung of the mobile electrons released by the condensed-phase surface.__________Translated from Fizika Goreniya i Vzryva, Vol. 41, No. 4, pp. 132–135, July–August, 2005.     

Combustion in Layered Ni + Al and Ti + Al + C Powdered Mixtures

Russian Journal of Non-Ferrous Metals - This study is devoted to the technology of producing cermet coatings using self-propagating high-temperature synthesis (SHS). The importance of the study is...     

Specifying requirements for collection and analysis of online user feedback

Requirements Engineering - According to data-driven Requirements Engineering (RE), explicit and implicit user feedback can be considered a relevant source of requirements, thus supporting...     

Emission phenomena in a SHS combustion wave

There are numerous experimental data indicating that the action of electromagnetic and magnetic fields on the combustion wave of self-propagating high-temperature synthesis (SHS) changes the process kinetics and the structure and properties of the reaction products. Emission phenomena in the combustion wave have received less attention. High rates of chemical energy dissipation in SHS (10¹² W/m³) are accompanied by physical phenomena such as the occurrence of a potential difference between the combustion front and reaction products, free electron emission from the combustion wave, and acoustic emission. Detailed studies of these nonequilibrium phenomena provide a deeper understanding of the reaction mechanism in solid flames to use nonthermal methods of combustion control. __________ Translated from Fizika Goreniya i Vzryva, Vol. 45, No. 4, pp. 121–127, July–August, 2009.