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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Heat Transfer Research
Импакт фактор: 0.404 5-летний Импакт фактор: 0.8 SJR: 0.264 SNIP: 0.504 CiteScore™: 0.88

ISSN Печать: 1064-2285
ISSN Онлайн: 2162-6561

Выпуски:
Том 50, 2019 Том 49, 2018 Том 48, 2017 Том 47, 2016 Том 46, 2015 Том 45, 2014 Том 44, 2013 Том 43, 2012 Том 42, 2011 Том 41, 2010 Том 40, 2009 Том 39, 2008 Том 38, 2007 Том 37, 2006 Том 36, 2005 Том 35, 2004 Том 34, 2003 Том 33, 2002 Том 32, 2001 Том 31, 2000 Том 30, 1999 Том 29, 1998 Том 28, 1997

Heat Transfer Research

DOI: 10.1615/HeatTransRes.v38.i2.10
pages 95-106

Effect of the Microstructure of Heterogeneous Mixture on Regularities of Gas-Free Combustion

N. A. Kochetov
Institute of Structural Macrokinetics and Problems of Material Science, Russian Academy of Sciences, Chernogolovka, Moscow Region, Russian Federation
A. S. Rogachev
Institute of Structural Macrokinetics and Problems of Material Science, Russian Academy of Sciences, Chernogolovka, Moscow Region, Russian Federation
A. N. Emelianov
Institute of Structural Macrokinetics and Problems of Material Science, Russian Academy of Sciences, Chernogolovka, Moscow Region, Russian Federation
E. V. Illarionova
Institute of Structural Macrokinetics and Problems of Material Science, Russian Academy of Sciences, Chernogolovka, Moscow Region, Russian Federation
V. M. Shkiro
Institute of Structural Macrokinetics and Problems of Material Science, Russian Academy of Sciences, Chernogolovka, Moscow Region, Russian Federation

Краткое описание

We performed a series of experiments on investigation of the microstructure of the initial charge for gas-free combustion, including investigation of compressibility, electroconductivity, thermal conductivity, rate of charge burning, as well as metallographic investigations. The determining role of the shape of particles and their capacity of formation of a continuous skeleton, as well as their impact on regularities of gas-free combustion have been identified. It has been shown that the velocity and mode of propagation of the gas-free combustion front are determined by the transfer of heat between metal particles in the initial reaction mixture, with the limiting role being played by contacts between particles. The method of atomic tunnel microscopy was used to study the micro relief of the surface of particles and determine the most probable width of micro gaps between the particles at the point of their contact. The presence of these gaps leads to a strong dependence of the mixture heat conduction on the gaseous atmosphere (vacuum, helium and air).


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