76 research outputs found
Existence of a Neuropathic Pain Component in Patients with Osteoarthritis of the Knee
∙ The authors have no financial conflicts of interest. © Copyright: Yonsei University College of Medicine 2012 This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial Licens
Effect of Ta substitution on the synthesis of (K,Na)(Nb,Ta)O3 powders by hydrothermal reaction: Insite into the combination of alkaline solution and raw powder
Strain-induced nanostructure of Pb(Mg1/3Nb2/3)O3–PbTiO3 on SrTiO3 epitaxial thin films with low PbTiO3 concentration
Preparation of {001}<sub>c</sub>-oriented epitaxial (K, Na)NbO<sub>3</sub> thick films by repeated hydrothermal deposition technique
Anomalous small-angle X-ray scattering (ASAXS) study of irradiation-induced nanostructure change in Fe-ion beam irradiated oxide dispersion-strengthened (ODS) steel
We have succeeded in observing Fe-ion-beam induced nanostructural change of MA956 oxide dispersion-strengthened (ODS) steel using anomalous small-angle X-ray scattering (ASAXS) diffractometry. The ASAXS curve shows a power-law scattering that follows the Porod\u27s law and an overlapped shoulder peak at the magnitude of scattering vector, Q, around 0.6nm−1. As the X-ray energy approaches the absorption K-edge of Cr (5.990keV), the intensity of the power-law scattering slightly decreases, but that of the shoulder peak remarkably increases. From these results, the power-law scattering is attributed to Cr-poor scatterers with a radius much larger than 5nm, and the shoulder peak is attributed to Cr-rich α′ precipitates with a mean radius of 2.8nm. After the ion-beam irradiation, intensity of the power-law scattering is nearly doubled, but the shoulder peak remains unchanged within an error of 2%. The latter result indicates that the irradiation-induced changes of radius and inter-precipitation distance of the α′ precipitates are smaller than 10%, and the change of their interface thickness is less than 0.5nm. In this way, our ASAXS results guarantee an absence of irradiation-induced nanostructure change of specific kinds of precipitates together with statistical errors, while observing changes of other precipitates
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