6533b85dfe1ef96bd12be738
RESEARCH PRODUCT
Assisted self-sustaining combustion reaction in the Fe–Si system: Mechanical and chemical activation
Eric GaffetFrédéric BernardCh. GrasCh. GrasN. ZinkN. Zinksubject
Reaction mechanismMaterials scienceAnalytical chemistrySelf-propagating high-temperature synthesis02 engineering and technologyCombustion01 natural sciences7. Clean energylaw.inventionchemistry.chemical_compoundlaw0103 physical sciencesSilicideGeneral Materials ScienceReactivity (chemistry)ComputingMilieux_MISCELLANEOUS010302 applied physicsMechanical Engineering[CHIM.MATE]Chemical Sciences/Material chemistry021001 nanoscience & nanotechnologyCondensed Matter PhysicsIgnition systemchemistryVolume (thermodynamics)Mechanics of Materials[ CHIM.MATE ] Chemical Sciences/Material chemistryX-ray crystallography0210 nano-technologydescription
Abstract This work presents original investigations carried out to improve the activated self-propagating high-temperature synthesis (SHS) process in the Fe–Si system: different ignition modes are tested (volume heating as opposed to a local ignition source), and the use of additive is considered in order to enhance the SHS type reactivity in the Fe–Si system. When 20 wt.% of KNO 3 is added to the reactive mixture, the fast (>20 mm s −1 ), stable and self-sustaining combustion reaction produces a very fine FeSi + α-FeSi 2 structure. Infrared thermography (IR) as well as post-mortem analysis (SEM, EDXS, XRD) was used to understand the mechanism behind the chemical activation process when KNO 3 was used as an additive.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2007-05-01 | Materials Science and Engineering: A |