The aim of the study was the use of the inorganic borax pentahydrate mineral in medium density fiberboard production instead of biomass fiber and to specify the performance which physical, mechanical, combustion of produced boards. Chips used in manufacture were subjected to cooking for 4,5 minutes in Asplund defibrator at the vapor pressure of 7,6...
Published in Russian Journal of Physical Chemistry B
AbstractIn this study, the dependences of the velocities and maximum combustion temperatures on the initial temperature for initial and mechanically activated Ti + Ni mixtures are determined. For activated mixtures, the transition temperatures from the layer-by-layer combustion to the thermal explosion mode are established. The maximum heating temp...
Published in Combustion, Explosion, and Shock Waves
AbstractSynthesis is carried out in a Ti + Al mixture prepared by two methods, namely preliminary mechanical activation (MA) or preheating. Synthesis occurs in the cases of layer-by-layer combustion (SHS) and thermal explosion. The dependences of burning rates of activated Ti + Al mixtures on the MA duration are investigated. The relationships betw...
Published in International Journal of Self-Propagating High-Temperature Synthesis
AbstractWindows-based SCSTempCal computer program for calculating maximum combustion temperatures (Tmax) attained in SCS reactions was suggested in both English and Russian versions. The program affords for estimating Tmax at four approaches, as well as for modeling SCS reactions by method of successive corrections. Program performance was illustra...
Published in International Journal of Self-Propagating High-Temperature Synthesis
AbstractCombustion of thermite TiO2/ZrO2–Ca mixtures in nitrogen gas was studied upon variation in green composition and nitrogen pressure P in the presence/absence of added calcium iodate Ca(IO3)2. The addition of calcium iodate was found to increase combustion temperature and extend combustibility limits. For compositions in which calcium was com...
Published in Combustion, Explosion, and Shock Waves
The standard enthalpy of formation of 1,4-diethynylbenzene experimentally to be 500.6 ± 6.7 kJ/mol. Calculations show that 1,4-diethynylbenzene has a relatively high adiabatic combustion temperature (about 1970 K at a pressure of 5 atm) and very high heat of combustion in oxygen (42 MJ/kg); therefore, 1,4-diethynylbenzene can be used as the basis t...
Published in Russian Journal of Physical Chemistry B
AbstractThe combustion products ratio and the energy characteristics were evaluated for solid composite propellants containing a mixture of 5,10-bis(trinitromethyl)furazano[3,4-e]di([1,2,4]triazolo)[4,3-a:3',4'-c]pyrazine (I) and 5,10-bis(difluoroamino-dinitromethyl)furazano[3,4-e]di([1,2,4]triazolo)[4,3-a:3',4'-c]pyrazine (II), a binder, and alumi...
Published in E3S Web of Conferences
The phenomenon of soiling of heat exchange surfaces occurs in all types of combustion plants. The deposit of solids (combustion gases particles) worsens heat transfer by reducing combustion efficiency, increasing fuel consumption and pollution. Deposits are influenced by combustion temperature, gas flow rate, dimensions of solids drift by combustio...
Published in Inorganic Materials
Abstract—We have studied parameters of the magnesium reduction of Nb2O5 and Mg4Nb2O9 in the combustion regime and characteristics of niobium powders thus prepared. The combustion speed and temperature have been determined as functions of parameters of the starting mixture. The use of magnesium niobate as a precursor for the reduction process has be...
Published in Combustion, Explosion, and Shock Waves
A method of preliminary mechanical activation is used to implement the combustion of a Ti + Ni mixture, which does not burn at room temperature. The dependences of the burning rate, maximal temperature of combustion, and elongation of samples on the mechanical activation time of the Ti + Ni powder mixture are described for the first time. Moreover,...
