Finite element method is used to obtain numerical solution to the Danielewski-Holly model of interdiffusion for non-ideal, multi-component open systems and concentration dependent diffusivities. The definition of the week solution of the initial-boundary-value problem of interdiffusion is formulated. Using the Galerkin scheme, the approximate solution to the problem has been derived. The numeri...

Interdiffusion coefficients were measured in NiSi and NiCr systems from diffusion couples under hydrostatic pressures between 50 326 MPa, at 1200 °C. Uniaxial compression creep tests also carried out on Ni–Cr 885 °C, 940 °C 1000 with stress values 0 25 to observe the effect of applied diffusion. A numerical inverse method was elaborated determine interdiffusion that takes into account plastic s...

Aqueous drops on silicone oil infused lubricating surfaces are cloaked with a thin layer of oil to minimize their surface energy. These oil cloaked aqueous drops exhibit pseudo-stable coalescence or spontaneous coalescence depending upon the lubricating oil thickness which controls the interaction point of the drops. For thick oil films, drops interact with each other through the surrounding oi...

The thermal stability of an iron/molybdenum bilayer was determined using Rutherford backscattering spectrometry and X-ray diffraction. Substantial interdiffusion (3%) was observed upon annealing at 973 K for one hour. High temperature annealing of Fe/Mo layers in oxygen ambient is therefore not suitable for the formation of magnetite layers.

A new dynamical approach that combines covariant parton transport theory with hadronization channels via parton coalescence and fragmentation is applied to Au+Au at RHIC. Basic consequences of the simple coalescence formulas, such as elliptic flow scaling and enhanced p/π ratio, turn out to be rather sensitive to the spacetime aspects of coalescence dynamics. PACS numbers: 12.38.Mh; 24.85.+p; 2...

The coalescence of close binary systems with two compact objects (neutron stars and black holes) are considered to be promising sources of gravitational waves for the currently built laser interferometers. Here, I review the current Galactic coalescence estimates derived both theoretically and empirically. I discuss the uncertainties involved as well as ways of obtaining an upper limit to the c...

The mechanical properties of the SiC/Al interface are crucial in estimating overall strength this ceramic-metal composite. present work investigates interdiffusion at using molecular dynamics simulations. One cubic and one hexagonal SiC with a higher probability orientations contact Al examined as two samples metal-matrix nanocomposites whisker particulate reinforcements. These reinforcements S...

Liquid-liquid dispersions are commonly used for separations and reaction systems, because the added interfacial area due to dispersion aids in mass transfer and chemical reaction rates. Transient coalescence experiments have been performed for a wide range of dispersed-phase fractions and impeller speeds. A similarity transformation of the experimental drop-size distribution is possible for mos...

Developments in synthetic biology enabled the microbial production of long chain hydrocarbons, which can be used as advanced biofuels in aviation or transportation. Currently, these fuels are not economically competitive due to their production costs. The current process offers room for improvement: by utilizing lignocellulosic feedstock, increasing microbial yields, and using cheaper process t...

The addition of salt can induce the slow coalescence of nanobubbles (approximately 100 nm) in an aqueous solution of alpha-cyclodextrin (alpha-CD). A combination of static and dynamic laser light scattering was used to follow the coalescence. Our results reveal that its kinetic and structural properties follow some scaling laws; namely, the average size () of the nanobubbles is related to...