Theoretical treatment of a self-sustained, ball milling induced, mechanochemical reaction in the Fe2O3
/Al system

CUADRADO- LABORDE, CHRISTIAN; L. C. DAMONTE; L. A.MENDOZA-ZÉLIS

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

Elsevier

Año: 2003 vol. 355 p. 106 - 113

0921-5093

A theoretical approach to self-sustained reactions (SSR) is established based on self-propagating high temperature synthesis. The corresponding heat conduction equation has been solved numerically and conclusions about the occurrence of the reaction through the whole sample have been obtained from the relationship between the dissipation mechanisms. These results strongly suggest that radiation heat flux plays a dominant role in the propagation of the reaction in reactive ball milling processes. The influence of different parameters on the occurrence of the SSR or its development were studied. Data for the formation of iron/alumina composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. different parameters on the occurrence of the SSR or its development were studied. Data for the formation of iron/alumina composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. radiation heat flux plays a dominant role in the propagation of the reaction in reactive ball milling processes. The influence of different parameters on the occurrence of the SSR or its development were studied. Data for the formation of iron/alumina composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. different parameters on the occurrence of the SSR or its development were studied. Data for the formation of iron/alumina composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. the whole sample have been obtained from the relationship between the dissipation mechanisms. These results strongly suggest that radiation heat flux plays a dominant role in the propagation of the reaction in reactive ball milling processes. The influence of different parameters on the occurrence of the SSR or its development were studied. Data for the formation of iron/alumina composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. different parameters on the occurrence of the SSR or its development were studied. Data for the formation of iron/alumina composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. radiation heat flux plays a dominant role in the propagation of the reaction in reactive ball milling processes. The influence of different parameters on the occurrence of the SSR or its development were studied. Data for the formation of iron/alumina composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. different parameters on the occurrence of the SSR or its development were studied. Data for the formation of iron/alumina composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. ved numerically and conclusions about the occurrence of the reaction through the whole sample have been obtained from the relationship between the dissipation mechanisms. These results strongly suggest that radiation heat flux plays a dominant role in the propagation of the reaction in reactive ball milling processes. The influence of different parameters on the occurrence of the SSR or its development were studied. Data for the formation of iron/alumina composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. different parameters on the occurrence of the SSR or its development were studied. Data for the formation of iron/alumina composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. radiation heat flux plays a dominant role in the propagation of the reaction in reactive ball milling processes. The influence of different parameters on the occurrence of the SSR or its development were studied. Data for the formation of iron/alumina composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. different parameters on the occurrence of the SSR or its development were studied. Data for the formation of iron/alumina composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. ve been obtained from the relationship between the dissipation mechanisms. These results strongly suggest that radiation heat flux plays a dominant role in the propagation of the reaction in reactive ball milling processes. The influence of different parameters on the occurrence of the SSR or its development were studied. Data for the formation of iron/alumina composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. different parameters on the occurrence of the SSR or its development were studied. Data for the formation of iron/alumina composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. ve ball milling processes. The influence of different parameters on the occurrence of the SSR or its development were studied. Data for the formation of iron/alumina composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. velopment were studied. Data for the formation of iron/alumina composites by reducing hematite with aluminum were used, in order to obtain realistic values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions. generic to extrapolate the conclusions to other high enthalpy reactions. values. However the results are sufficiently generic to extrapolate the conclusions to other high enthalpy reactions.