%0 DATA
%A Shijing, Lu
%A Edward J., Mily
%A Douglas L., Irving
%A Jon-Paul, Maria
%A Donald W., Brenner
%D 2015
%T New Method for Extracting Diffusion-Controlled Kinetics
from Differential Scanning Calorimetry: Application to Energetic Nanostructures
%U https://acs.figshare.com/articles/New_Method_for_Extracting_Diffusion_Controlled_Kinetics_from_Differential_Scanning_Calorimetry_Application_to_Energetic_Nanostructures/2154976
%R 10.1021/acs.jpcc.5b03317.s001
%2 https://ndownloader.figshare.com/files/3788827
%K layer thicknesses
%K sample geometry
%K scanning calorimetry
%K Energetic NanostructuresA
%K peak temperatures
%K Ni
%K DSC data scale
%K scanning calorimetry curves
%K Differential Scanning Calorimetry
%K peak height
%K nanolaminate systems
%K Kissinger analysis
%K activation energies
%K New Method
%K bilayer thickness
%K analysis scales
%K form yields
%K system geometries
%K reaction mechanisms
%K expression
%K Zr
%X A new expression is derived for interpreting
differential scanning
calorimetry curves for solid-state reactions with diffusion-controlled
kinetics. The new form yields an analytic expression for temperature
at the maximum peak height that is similar to a Kissinger analysis,
but that explicitly accounts for laminar, cylindrical, and spherical
multilayer system geometries. This expression was used to analyze
two reactive multilayer nanolaminate systems, a Zr/CuO thermite and
an Ni/Al aluminide, that include systematically varied layer thicknesses.
This new analysis scales differential scanning calorimetry (DSC) peak
temperatures against sample geometry, which leads to geometry-independent
inherent activation energies and prefactors. For the Zr/CuO system,
the DSC data scale with the square of the bilayer thickness, while,
for the Ni/Al system, the DSC data scale with the thickness. This
suggests distinct reaction mechanisms between these systems.