Nanoscale Phase Separation in Fe-B Amorphous Alloys
نویسندگان
چکیده
منابع مشابه
Phase separation in sputtered amorphous metal-germanium alloys.
Anomalous small-angle x-ray scattering (ASAXS) has been used to observe and characterize phase separation in sputtered amorphous FecGel -c and MocGe 1-c thin films. Significant chemical inhomogeneity and anisotropy is observed. At low metal concentrations (c<O.25), no . .. .. -films are homogeneous nor isotropic through the metal-insulator transition composition region (10<cs25). Measurements p...
متن کاملNanoscale Phase Evolution during Continuum Decomposition of Fe-Cr Alloys
The continuum decomposition of the Fe-Cr alloys from initial phase separation to steady-state coarsening with concentrations varying from 25 at % Cr and 30 at % Cr to 33 at % Cr aged at 750 K was studied by utilizing three-dimensional phase-field simulations. The dynamic stages of separation of nanoscale Cr-enriched α' phase were distinguished by the evolution of the volume fraction, particle n...
متن کاملNanoscale phase separation in manganites
We study the possibility of nanoscale phase separation in manganites in the framework of the double exchange model. The homogeneous canted state of this model is proved to be unstable toward the formation of small ferromagnetic droplets inside an antiferromagnetic insulating matrix. For the ferromagnetic polaronic state we analyze the quantum effects related to the tails of electronic wave func...
متن کاملExtreme Ductility at the Nanoscale in Fe-based Alloys
A novel method for preparing and testing bending specimens in-situ the TEM has been developed. This method provides high visibility of the crack front and its associated plastic zone. This is significant because energy release rates can now be calculated at many points throughout the test based on crack tip opening displacement (CTOD), crack opening angle (COA), and crack advance. Further refin...
متن کاملAmorphous-Amorphous Phase Separation in API/Polymer Formulations.
The long-term stability of pharmaceutical formulations of poorly-soluble drugs in polymers determines their bioavailability and therapeutic applicability. However, these formulations do not only often tend to crystallize during storage, but also tend to undergo unwanted amorphous-amorphous phase separations (APS). Whereas the crystallization behavior of APIs in polymers has been measured and mo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Materia Japan
سال: 2004
ISSN: 1340-2625,1884-5843
DOI: 10.2320/materia.43.1002