EVALUATION OFDISLOCATION STRUCTURE AND CRYSTALLITE SIZE IN WORN AL-SI ALLOY BY X-RAY DIFFRACTION

Crystallite Size Measurement Using X- Ray Diffraction

Mike Meier University of California, Davis September 13, 2004 Figure 1. FEG-SEM image of nanosized aluminum oxide powder. Note the magnification and the size of the micron bar. Also note how the smaller particles and the edges of the larger particles appear to be somewhat transparent. This is because much of the 5 kV electron beam can pass through these thinner parts of the particles. CRYSTALLI...

Structure of molten Al and eutectic Al–Si alloy studied by neutron diffraction

Dislocation structure and crystallite size-distribution in hexagonal nanomaterials from X-ray peak profile analysis

The microstructure of three different nanocrystalline materials with hexagonal crystal structure are studied by X-ray diffraction peak profile analysis. The crystallite size distribution and the dislocation structure are determined in plasmathermal silicon nitride powder, sintered tungsten carbide and severely deformed titanium and are compared with transmission electron microscopy (TEM) result...

Fusion bonding of Si wafers investigated by x ray diffraction

Investigation of the crystal structure of URu 2 Si 2 by high - resolution X - ray diffraction

We report thermal expansion measurements on URu 2 Si 2 by high-resolution X-ray diffraction done with a relative longitudinal resolution of 3]10~6. Besides the abnormal thermal expansion, no lattice distortion indicating a transition into another space group was observed, i.e. the crystal remains tetragonal down to 3K. ( 1999 Elsevier Science B.V. All rights reserved.

Structure of Mn-Si-Melts by Means of X-Ray Diffraction

The binary molten alloys Mn74Si26 and Mn33 5Si665 have been investigated by means of X-ray diffraction. The total structure factors as well as the total pair correlation functions were evaluated. The interatomic distances and total coordination numbers are given. The structural results for Mn74Si26 were compared to those for amorphous Mn74Si23P3 and for a tetrahedral packing model. A pronounced...