The structure evolution behaviors of NiAu nanospindles in oxidizing/vacuum conditions were studied by in situ scanning transmission electron microscopy. The spindle structure transforms into Ni@Au@NiO multi-shell structure in the oxidizing atmosphere following an oxidation-driving multilayer reconstruction mechanism. In the vacuum condition, the NiAu nanospindles evolve along four distinct stag...

Lithiation of 1,2-dichloroor 1,2,3-trichloroferrocene with lithium tetramethylpiperidinide, followed by transmetallation with ZnCl2 and Pd(II)-catalyzed coupling with 2-bromopyridine, yield the pyridylferrocenes [CpFe{C5H2−nCl2+n(2-C5H4N)}] (2a, b, n = 0 or 1) as brown oils of low stability. Recrystallization of 2b produced a small number of X-ray quality crystals, which could be shown to have ...

      The in vitro dissolution of plasma-sprayed hydroxyapatite (PHA) coatings with different characteristics, produced by various spraying conditions, in a Tris-buffered solution at pH 7.4 was experimentally studied through the measurement of calcium ions release with Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES), and then modeled. Three coating characteristics, th...

piroxicam has two different crystalline forms (known as needle and cubic forms), that they are different in physicochemical properties such as biological solubility. in the current research, using taguchi experimental design approach the influences of five operating variables on formation of the piroxicam polymorph shapes in recrystallization were studied. the variables include type of solvent,...

The wear and rolling contact fatigue (RCF) performance of eutectoid hypereutectoid rail steels were studied. Subsequently, the microstructure evolutions subsurface materials these two after testing comparatively investigated. results indicated that, compared with rail, had lower loss, but longer RCF crack lengths. After rolling-sliding testing, original equiaxed undeformed coarse grains rails i...

Recrystallization, which can occur dynamically or statically, is an importantphenomenon causing microstructure changes in deformed metals and therefore affecting theproperties of the material. Even though extensive investigations have been carried out on thenumerical modeling of recrystallization, the literature lacks accurate recrystallization modelswhich are able to predict mi...

Nucleation of recrystallization in deformed metals is discussed with a focus on how theories have been achieved from experimental investigations. Suggested nucleation mechanisms and potential sites are reviewed to gain an overall understanding the state-of-the-art. Limitations applied techniques followed by analysis newly invented non-destructive 3D challenged accepted which based 2D studies. F...