Ordering and phase separation in the noble metal-base quasibinary BCC alloys.
نویسندگان
چکیده
منابع مشابه
Phase Separation and Ordering in Group-III Nitride Alloys
The electronic, structural, and thermodynamic properties of cubic (zinc blende) group-III nitride ternary InxGa1−xN and quaternary AlxInyGa1−x−yN alloys are investigated by combining first-principles total energy calculations and cluster expansion methods. External biaxial strain on the alloys are taken into account in the calculations. While alloy fluctuations and strain effects play a minor r...
متن کاملFractal-like behaviour of the BCC/FCC phase separation in the iron-gold alloys.
Iron-gold alloys with compositions Fe(70)Au(30) and Fe(50)Au(50) were prepared by arc melting. The alloys were investigated by means of the high-resolution scanning electron microscopy (SEM-FEG) in the as-cast state and upon annealing in two steps, i.e. at 250 degrees C for 24 h and subsequently at 500 degrees C for 48 h. The alloys were composed of two phases, i.e. a BCC phase rich in iron and...
متن کاملPhase 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 کاملBond Strength of Resin Cements to Noble and Base Metal Alloys with Different Surface Treatments
OBJECTIVES The bond strength of resin cements to metal alloys depends on the type of the metal, conditioning methods and the adhesive resins used. The purpose of this study was to evaluate the bond strength of resin cements to base and noble metal alloys after sand blasting or application of silano-pen. MATERIALS AND METHOD Cylinders of light cured Z 250 composite were cemented to "Degubond 4...
متن کاملPhase separation and ordering in InGaN alloys grown by molecular beam epitaxy
In this study, we investigated phase separation and long-range atomic ordering phenomena in InGaN alloys produced by molecular beam epitaxy. Films grown at substrate temperatures of 700–750 °C with indium concentration higher than 35% showed phase separation, in good agreement with thermodynamic predictions for spinodal decomposition. Films grown at lower substrate temperatures ~650–675 °C! rev...
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: Bulletin of the Japan Institute of Metals
سال: 1985
ISSN: 0021-4426,1884-5835
DOI: 10.2320/materia1962.24.298