Comparative study of microstructural characteristics and stored energy of mechanically activated hematite in different grinding environments

2006 ◽  
Vol 79 (2) ◽  
pp. 120-139 ◽  
Author(s):  
Parviz Pourghahramani ◽  
Eric Forssberg
Keyword(s):  
Comparative Study ◽  
Stored Energy ◽  
Microstructural Characteristics

An investigation on the microstructure and defects in the mechanically milled Cu and Fe powders

2014 ◽  
Vol 30 (1) ◽  
pp. 14-24
Author(s):  
M. Mojtahedi ◽  
M. Goodarzi ◽  
M. R. Aboutalebi ◽  
V. Soleimanian
Keyword(s):  
Three Dimensional ◽  
Geometrical Approach ◽  
Stored Energy ◽  
Line Broadening ◽  
Scanning Calorimetry ◽  
Microstructural Characteristics ◽  
X Ray ◽  
X Ray Crystallography ◽  
Geometrical Modelling ◽  
Released Energy

The microstructural characteristics of mechanically milled (MM) iron (Fe) and copper (Cu) powders are investigated by means of various X-ray crystallography analysis methods. The conventional Williamson–Hall and Warren–Averbach methods are used besides the modified Williamson–Hall, the modified Warren–Averbach, and the Variance approaches, in proper cases. Afterward, the obtained crystallite size and dislocation density are used to calculate the stored energy in the nanostructured powders. For this aim, a new geometrical approach is developed which can consider three-dimensional crystallites and the thickness of boundaries between them. Moreover, the released energy during annealing of MM Cu and Fe powders is measured using differential scanning calorimetry. The results of line broadening analysis and geometrical modelling are combined to the calorimetry of a room temperature aged Cu powder. In this way, the thickness of grain boundary in the nanostructured Cu is calculated to be 1.6 nm.

Author response for "Laminar distribution of cortical projection neurons to the pulvinar: A comparative study in cats and mice"

2020 ◽  
Author(s):  
Bruno Oliveira Ferreira de Souza ◽  
Éve‐Marie Frigon ◽  
Robert Tremblay‐Laliberté ◽  
Christian Casanova ◽  
Denis Boire
Keyword(s):  
Comparative Study ◽  
Author Response ◽  
Projection Neurons ◽  
Cortical Projection ◽  
Laminar Distribution
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