ISSN:
1662-0356
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Natural Sciences in General
,
Technology
Notes:
Gas-solid systems are among a large class of systems in which self-propagating hightemperaturesynthesis (SHS) is observed. Powders of metals and non-metals burn in the atmosphereof gaseous reagent and the products of the reaction are solid. A variety of nitrides and differentcomposites were synthesized by combustion of porous powder compacts in nitrogen atmosphere.The conversion, achieved during the combustion process, as well as the composition and structureof the products, significantly depends on the nitrogen pressure. Most of the published experimentalresults on this topic were obtained under nitrogen pressure of less 10 MPa and only few systemswere investigated under higher pressures. In this work we present the results of the studies on thecombustion process in the range of high nitrogen pressures of 40-400 MPa for two systems, such asNb-N2 and B-C-N2. Dependences of combustion characteristics, phase composition andmicrostructure of the synthesized products on the nitrogen pressure were studied
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/42/transtech_doi~10.4028%252Fwww.scientific.net%252FAST.45.1011.pdf
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